Technology
'Harvest Now, Decrypt Later': Why Post-Quantum Cryptography is Needed
Post-quantum cryptography is no longer just a threat to existing cryptographic algorithms. It's about protecting against 'Harvest Now, Decrypt Later' attacks.
Technology
314 posts
Deep dives into software, cloud computing, AI and technology trends.
Technology
The Hidden Cost of Self-Hosting: A 20-Year Engineer's Honest Homelab
I explore the invisible costs behind the initially appealing aspects of self-hosting and the pragmatic lessons I've learned from 20 years of field experience.
Technology
Caddy, Traefik, or Nginx? Choosing a Reverse Proxy for Self-Hosting
Comparing Caddy, Traefik, and Nginx for reverse proxy selection in my self-hosted projects, focusing on their core differences, advantages, and disadvantages.
Technology
Two-Factor Authentication: The Cost of Added Security
Beyond the increased security, two-factor authentication brings hidden costs in implementation, operations, and user experience…
Technology
Windsurf or Cursor? I Used Both AI Editors: Which One for Whom
I compared AI-powered code editors Windsurf and Cursor. Which editor is better for a developer with 20 years of field experience like me, and when?
Technology
Prompt Engineering is Dead, Long Live Context Engineering: The Model's
Getting value from large language models isn't about writing fancy prompts, but about designing the model's context window with engineering principles.
Technology
Is It Really Necessary to Jump on Every New Technology?
I evaluate the hidden costs and real-world field realities of projects built under the allure of new technologies, drawing from my 20 years of experience.
Technology
45% of AI-Generated Code Contains Security Vulnerabilities: Code
I analyze the security vulnerabilities in AI-generated code and how this situation should change code review processes.
Technology
Your Browser Extensions Can Betray You: Innocent One Moment, Malicious
How can browser extensions, initially appearing innocent, become a security risk over time? Developer account takeovers, commercial acquisitions…
Technology
WhatsApp, Signal, Telegram: Which One Is Truly Secure?
An in-depth look at the real security levels of popular messaging apps WhatsApp, Signal, and Telegram, focusing on the metadata difference and beyond.
Technology
Nextcloud vs Immich: Which Self-Hosting Solution is Better?
I'm deeply comparing Nextcloud and Immich's self-hosting options in terms of performance, security, and cost.
Technology
The True Cost of Downloading Cracked Software: Infostealers and Stolen
Downloading cracked software isn't just about legal risks; it's also about how your personal and corporate data can be compromised through infostealer malware…
Technology
Password Managers: Browser-Based or Standalone Application?
Choosing a password manager is a critical security decision. Browser-based and standalone applications differ in security, ease of use, and platform.
Technology
Optimizing Speed and Accuracy in AI-Powered Code Review
Methods for accelerating development processes and improving code quality with AI-powered code review, including prompt engineering, multi-model usage, and.
Technology
Is This the End of Passwords? Everything You Need to Know Before
A comprehensive guide from the fundamental principles of Passkeys to integration steps, security advantages, and operational risks.
Technology
16 Billion Passwords Leaked News: Are You Really in Danger?
News of 16 billion password leaks usually refers to old and combined data. The real danger lies in password reuse and weak authentication…
Technology
Is a VPN Really Necessary? 5 Truths Marketing Won't Tell You
I explain the real functions of a VPN beyond marketing promises, its performance costs, and modern alternatives, based on my own experiences.
Technology
The Best Code Is the Code You Don't Write
A truth distilled from 20 years of experience: Every line of code written is a cost, and every line not written is a gain. How can we avoid unnecessary.
Technology
AI Code Assistants: Creating Efficiency or Dependency?
Analyzing the role of AI code assistants in software development, the efficiency gains they bring, and the potential risks of dependency, based on my own.
Technology
Complexity Is Not a Status Symbol
With 20 years of experience, I explain the cost of unnecessary complexity and the power of simplicity in software and system architecture.
Technology
7 Security Steps You Must Take Before Exposing Your Homelab
Sharing 7 critical steps I implemented based on my own experiences to mitigate security risks encountered when exposing your homelab to the internet.
Technology
Replace SaaS Subscriptions with Your Own Server: 8 Open Source Options
The advantages and challenges of using open-source alternatives on your own server against rising SaaS costs and data control issues in 2026…
Technology
Synology or DIY? Is Building a NAS with TrueNAS in 2026 Still
Synology's ready-made solutions or building your own system with TrueNAS? A detailed look at hardware, software, cost, and management when choosing a NAS in.
Technology
Proxmox or Docker? Which One Should You Start Your Homelab With?
Understanding the difference between Proxmox and Docker is critical when setting up a homelab. These two technologies are not rivals; they complement each.
Technology
Vibe Coding Finished, What's Next?
I share a turning point in my career after completing Vibe Coding and the process of discovering new directions.
Technology
Everyone Uses AI, But No One Trusts It: The Paradox of the Age
AI has become widespread, but the lack of trust is crippling institutions. In this article, I explore the roots of this paradox and potential solutions through.
Technology
Tailscale or WireGuard? The Right Way to Connect Remotely to Your Home
A current look at the differences, ease of setup, and performance between Tailscale and WireGuard for your remote home connection needs, specifically for 2026…
Technology
Has the Tech Industry Become Too Complex?
I analyze the true reasons for complexity with my industry experience and evaluate ways to simplify.
Technology
3 Reasons to Build Your Own NAS Instead of Buying Synology
While the allure of ready-made NAS solutions is strong, building your own NAS system offers significant advantages in terms of cost, flexibility, and security.
Technology
I Pulled My Data From the Cloud: Do I Regret It?
Did I regret moving my data on-premise and breaking free from cloud dependency? I'll share the technical and operational reasons behind this decision from my.
Technology
I Switched to Jellyfin and Never Looked Back: When Plex Hit $250
After Plex Pass's pricing policy change, I detail my experience switching to Jellyfin, from setup to performance, security to user experience…
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When to Adopt New Technology, When to Wait?
I'm sharing the challenges I faced and the lessons I learned when deciding to adopt new technology. On the risks of early adoption and correct timing…
Technology
Not Everyone Needs Kubernetes
I explain why Kubernetes isn't the only solution for every project, highlighting the advantages of simplicity and cost-effectiveness based on my 20 years of.
Technology
7 Ways to Reduce Your AI Bill: Smart Strategies
As AI model token costs rapidly increase, I explain how you can reduce your bill using practical methods I've experienced.
Technology
Build Your Own AI Agent: Automating Tasks in 3 Steps
Learn how to build your own AI agent using Python, LangChain, and the OpenAI API. A step-by-step guide to automating tasks.
Technology
I Ran AI Agents Autonomously for 6 Months: An Honest Report
I ran my own AI agents autonomously for 6 months. In this process, I encountered successes, disappointments, technical details, and my cost analysis…
Technology
5 Reasons Why Proxmox Should Be the Heart of Your Homelab
5 key reasons why Proxmox will strengthen your homelab in terms of high availability, storage, networking, and security.
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What is MCP and Why Did It Become 2026's Most Important AI Standard?
Exploring the Microservice Communication Protocol (MCP) standard, which solves the incompatibility problem between AI models, using a USB-C analogy and my own.
Technology
GPT-5.5, Claude, Gemini, or DeepSeek? LLMs Based on Workload
I analyze the performance of different LLM models based on their workloads. Comparing GPT-5.5, Claude, Gemini, and DeepSeek to help you choose the right.
Technology
Self-Hosting: A Hobby or a Necessity?
With 20 years of system architecture experience, I examine whether managing your own servers is a pleasure or an inevitable need.
Technology
GitHub Copilot Now Charges Per Token: The Bill Shock
I examine the cost increases brought by GitHub Copilot's new token-based pricing model and the strategies I've developed to counter it.
Technology
Why Simple Systems Always Win
One of the most expensive lessons I've learned in my career: Unnecessary complexity always invites disaster. The power of simplicity and why it's critical…
Technology
System Architect vs. AI Solution Architect: An Anatomy of Roles
With 20 years of field experience, I examine the fundamental differences, commonalities, and operational challenges of system architecture and AI solution.
Technology
Is Vibe Coding Dead? The Era of Karpathy's 'Agentic Engineering'
I argue that vibe coding is outdated and has been replaced by Karpathy's 'Agentic Engineering' approach. This new era focuses on AI agents in engineering...
Technology
Cursor or Claude Code? Which AI Coding Tool Should You Choose in 2026
In 2026, we'll explore the differences, advantages, and disadvantages between AI coding tools like Cursor and Claude Code to help you make the right choice...
Technology
AI Deleted a Production Database in 9 Seconds
I examine the potential dangers of AI agents in production environments through a real data loss scenario. Why should we be careful?
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The Bitter Truths of Building a Social Network
With 20 years of experience, I share the promises and challenges I faced in social network development, from scale to security, moderation to sustainability.
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Why I Love Centralized Architectures?
Despite the dazzling promises of distributed systems, my 20 years of experience have often shown me the value of the simplicity and control that centralized.
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One VPS Is Enough: Why More Is Usually a Waste of Resources?
With 20 years of systems architecture experience, I discuss why a single VPS is often sufficient and how adding more can be a waste of resources.
Technology
Local Build Cache vs Remote: Cost Balance in CI/CD Speed
Local build cache or remote cache in your CI/CD pipelines? I dive deep into the balance of speed, cost, and efficiency.
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Things AI Still Can't Do: A Look Through 20 Years of Experience
As artificial intelligence rapidly enters our lives, I discuss the limits of AI and what it has yet to achieve, drawing on my 20 years of experience in system.
Technology
Vector Databases in AI Projects: Are They Really Necessary?
Mustafa Erbay's pragmatic take on whether using a vector database is truly necessary for your AI projects, exploring trade-offs and alternative approaches.
Technology
Your Own Push System Instead of FCM/APNs: When Is It Necessary?
Advantages, disadvantages, and considerations for building your own push notification system instead of relying on Google Firebase Cloud Messaging (FCM) and.
Technology
3 Key Advantages of VLAN Segmentation: Secure Your Network
Mustafa Erbay's practical insights into the 3 key advantages of VLAN segmentation for improving network security, performance, and management.
Technology
Choosing a Deploy Strategy in CI/CD Pipeline Optimization
I analyze blue-green, canary, and rolling update deploy strategies in terms of cost, risk, and resource consumption with a pragmatic approach.
Technology
Why is Writing ERP Software So Difficult?
I explore the real challenges in developing Enterprise Resource Planning (ERP) software, focusing on organizational aspects rather than purely technical ones.
Technology
Hidden Costs in ERPs That No One Sees
My own experiences with the hidden costs I encountered in a manufacturing ERP and the profound effects of organizational decisions on software projects…
Technology
The MRP Nightmare: The Cost of a 'Yes'
With 20 years of system architecture experience, I explain that the most expensive mistake in my career was not a line of code but a 'yes'. The real face of.
Technology
Why Everyone Should Back Up: A Confession from Experience
With 20 years of system architecture experience, I explain why backup isn't just a 'good idea,' but a necessity, with a striking confession.
Technology
PostgreSQL WAL Bloat Management: Reclaiming Disk Space in 4 Steps
How I tackled WAL bloat in PostgreSQL, the practical 4 steps I implemented to reclaim disk space, and critical optimization strategies...
Technology
What Happens When You Don't Set Up Monitoring? A Bitter Lesson from
In my twenty-year career, I've personally experienced how neglected monitoring leads to unexpected costs for systems and businesses. This post explores how.
Technology
Monolith is Still Not Dead: Why I Returned from the Microservices
A bitter truth from 20 years of field experience for those who jumped on the microservices bandwagon and overcomplicated their systems: Monolith is not dead.
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Log Level Strategy: Is Debug Mode Always Necessary?
What you need to know to strike a balance between performance and debugging capabilities by correctly defining the log level strategy in your applications.
Technology
Why Cardinality Explosion is Always a Problem?
I examine the problems of cardinality explosion in metric systems, with storage, performance, and cost impacts, using examples from my own experience.
Technology
My VPS Crashed at 3 AM: A Sysadmin's Confession
Despite 20 years of experience, I'm sharing the incident of my VPS crashing in the middle of the night and the lessons I learned. As a system architect, my.
Technology
Read Before Moving to Cloud: The Bitter Truths of 20 Years of
A bold analysis of the costs, risks, and missed opportunities behind the move to cloud, based on 20 years of system architecture experience.
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How High‑Traffic Systems Fail
The collapse stories of high‑traffic systems usually stem from small overlooked details rather than major architectural mistakes.
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Mobile Offline-First Synchronization: 3 Practical Challenges and
Mustafa Erbay's experiences with 3 practical synchronization challenges encountered when building an offline-first architecture in mobile applications, along.
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Being a System Architect in the Age of AI: Tools Change, But the
How is the artificial intelligence revolution affecting system architecture? With 20 years of experience, I evaluate AI's promises and the unchanging.
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Error Handling: Return Codes or Exceptions? 3 Critical Differences
Two fundamental approaches to error management in software: return codes and exceptions. With 20 years of experience, I'll explain 3 critical differences and.
Technology
Traced Logging vs. Metric-Based Monitoring: A Practical Comparison
Should I use Traced Logging or Metric-Based Monitoring when observing my systems? My field experiences reveal the differences and trade-offs of both approaches…
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If I Rewrote Social Media from Scratch
With 20 years of system and network experience, what would I do differently if I designed social media architecture from the ground up? From algorithms to.
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ACID Properties: Are They Absolutely Essential for Every Project?
I examine the role of ACID in database transactions, when it can be compromised, and in which situations it is critical, based on my own experiences.
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Mobile App Size: Compile-Time Optimization or Dynamic Packaging?
Should you optimize mobile app size at the compilation level or with dynamic packaging methods? Pros, cons, and more of both approaches…
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AI Generates Code, Who Takes Responsibility?
With the rise of AI in code generation, the most critical question for system architects and developers is: Who is responsible for the errors that occur?
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Embedding Lifecycle Management: Balancing Cost and Freshness
A practical guide on strategies to optimize the cost and freshness of embeddings in AI applications. Data changes, re-indexing, and…
Technology
Multi-Tenant Architecture in ERP Systems: The Anatomy of Sharing
My experiences and strategic decisions while designing a multi-tenant architecture for a manufacturing ERP. Sharing models, data isolation, and performance…
Technology
PostgreSQL MVCC: Common Mistakes in Application Development
Understanding PostgreSQL's MVCC mechanism is critical for performance and data consistency. Common mistakes and their solutions when developing applications...
Technology
Push Notification Reliability: 3 Core Misconceptions
We examine 3 common misconceptions in push notification delivery and the issues they cause in real-world systems. Improving reliability...
Technology
High Cardinality Metrics: Does the Benefit Outweigh the Cost?
Examining the impact of high cardinality metrics on system performance, cost analysis, and optimal usage scenarios.
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Serving AI Models: Balancing Cost and Performance
Strategies for balancing cost and performance when serving AI models. Pragmatic approaches and real-world experiences.
Technology
CI/CD Tool Selection: Balancing Vendor Lock-in and Maintenance Burden
Balancing vendor lock-in and maintenance burden when selecting CI/CD tools is critical for long-term success. In this post, I share my experiences and.
Technology
Why Mobile Push Notifications Don't Arrive: 3 Critical Reasons
I examine the technical reasons behind mobile push notification delivery issues with my 20 years of system architecture experience. Problems, solutions, and...
Technology
Database Indexes: Necessary for Every Query?
I examine when database indexes are beneficial, when they hurt performance, and the right indexing strategies with real-world scenarios.
Technology
Agent-Based vs. Agentless Monitoring: Make the Right Choice in 3 Steps
Determine which system monitoring method, agent-based or agentless, is right for you in 3 simple steps. A practical guide based on my experience.
Technology
SQLite vs PostgreSQL: Which One in Production?
I compare the performance, concurrency, backup, and resource consumption differences of SQLite and PostgreSQL in production environments based on my field.
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Dependency Management: Monorepo or Polyrepo? My Choices
I compare monorepo and polyrepo approaches for dependency management in software projects, drawing from my own experiences. Advantages, disadvantages, and.
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Metrics and Trace Data: Fundamentals of Understanding System Issues
Mustafa Erbay shares his experiences on the importance, usage, and practical tips for metric and trace data to deeply understand system issues…
Technology
Switch Hardening: Always a Necessary Step?
We delve deep into switch hardening, a cornerstone of network security. When is it necessary, what are the trade-offs, and its practical applications.
Technology
Zero-Trust Architecture: A Pragmatic Roadmap for Small Teams
A step-by-step guide on how small teams can practically and effectively implement zero-trust architecture. Core principles, tools...
Technology
Secret Rotation: Practical Ways to Enhance Security
Regularly rotating secrets in systems is a critical security step. Drawing from my own experiences, I'll discuss secret rotation strategies and practical...
Technology
Metric Collection: Push vs. Pull Models - When to Use Which?
A deep dive into Push and Pull models for collecting system and application metrics, exploring which is more suitable for different scenarios...
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Metric Cardinality: An Overlooked Performance Burden or a Developer
How does metric cardinality affect system performance? In this guide, we delve deep into overlooked burdens and developer mistakes.
Technology
RED Metrics Design: Service-Oriented or Workflow-Oriented?
Should RED metrics be designed based on services or workflows? This post explores the pros, cons, and best use cases for each approach.
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The Operational Cost of JWT Lifecycle Management: Overlooked Details
I delve into the operational burden and cost of JWT lifecycle management, examining overlooked strategic points and practical solutions.
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REST vs. GraphQL vs. gRPC: 3 API Design Approaches Compared
A deep dive into REST, GraphQL, and gRPC API design approaches. I compare them with concrete examples to help you choose the best fit for your project.
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AI Agent Tool-Use Limits: More Tools, Better Results?
I examine the limits of AI agents' tool usage and the complexity introduced by adding more tools. Practical takeaways from my real-world experiences.
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Distributed Lock Alternatives: My Pragmatic System Design Experiences
Lock management in distributed systems is critical for data consistency. Exploring different alternatives like Redis, PostgreSQL, and database locks, and.
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Why is VLAN Segmentation Overhyped in Small Networks?
I share my experiences on the administrative burden, performance losses, and practical alternatives of VLAN segmentation in small-scale networks.
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Mobile App Size Optimization: The Burden of the Development Process
We examine methods for reducing APK and IPA packages, R8/ProGuard settings, and CI/CD processes in mobile app size optimization.
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ORM Tools Are Overrated: Why They Fall Short in Large-Scale Projects?
I examine the shortcomings of ORM tools in large-scale projects, their performance bottlenecks, and alternative approaches with concrete examples.
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API Versioning Strategy: URI or Header? A Pragmatic Choice
Should you use URI or Header for version management in your APIs? A deep dive into the pros, cons, and real-world scenarios of both approaches.
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Mobile App Features: Local Database vs. Cloud-Based
The differences and advantages between local database and cloud-based approaches for mobile applications
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Self-Hosted Runner vs SaaS: Which is More Cost-Effective?
Does using self-hosted runners in CI/CD processes truly save money? I compared hidden costs, hardware resources, and operational overhead.
Technology
Structured vs Unstructured Logging: Observability Fundamentals
Exploring the differences, benefits, and real-world applications of storing system and application logs in structured (structured) or unstructured.
Technology
Why is Network Switch Hardening Often Neglected?
I examine why network switch hardening is often overlooked, drawing from my real-world field experience. Closing security vulnerabilities...
Technology
LLM Inference Caching: How to Balance Cost and Latency?
I explain the intricacies of LLM inference caching and what to consider when balancing cost and latency, with practical examples.
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Strangler Fig vs. Big Bang: 3 Reasons for Migrating to Modular
Exploring the technical risks, database strategies, and practical transition approaches of Strangler Fig and Big Bang when moving monolithic systems to modular.
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Agent Tool-Use: Why Are Real-World Risks Being Ignored?
A deep dive into the real-world risks of agent tool usage and why these risks are often overlooked, based on Mustafa Erbay's experiences...
Technology
Pragmatic Optimization in Mobile App Size: 3 Misconceptions
I address 3 common misconceptions often encountered in mobile app size optimization, drawing from my experiences and concrete examples.
Technology
Zero-Trust Architecture: 3 Practical Implementation Steps
Zero-Trust offers a more robust approach than traditional network security. From my own experience, here are 3 practical steps to set it up.
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VLAN Segmentation: Balancing Security and Performance
I explain how I strike a balance between performance and security when moving from a flat network to VLAN segmentation, sharing technical details from my field.
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Dependency Security: 3 Approaches to Vulnerability Management
Learn 3 effective approaches to manage dependency vulnerabilities in your software projects, with concrete examples and my experiences.
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3 Architectural Mistakes That Undermine Reliability in Mobile Push
We delve into 3 common architectural mistakes that degrade the reliability of push notifications in mobile applications and their solutions.
Technology
Why Is Silicon Valley's OpenTelemetry Obsession Exaggerated?
Comments on why OpenTelemetry is so popular in Silicon Valley.
Technology
Mobile App Size Optimization vs. Push Notification…
Balancing mobile app size with push notification reliability. Which optimizations truly add value?
Technology
Application Log Levels: When to Use DEBUG and INFO?
The correct use of DEBUG and INFO log levels plays a critical role in debugging and optimizing system performance during application development. In this post.
Technology
MDX Layout Best Practices: Import Order and Component Placement
My experiences organizing MDX layouts on my own blog, and my strategies for optimizing import order and component placement for maximum efficiency...
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Self-hosted GitHub Actions Runner: Balancing Cost and Control
I examine the advantages and disadvantages of running your GitHub Actions runners on your own servers, focusing on cost, performance, and control.
Technology
API Versioning: Current Approaches and Choices in the Ecosystem
I share API versioning strategies, the advantages and disadvantages of different approaches, and practical experiences gained in my own projects.
Technology
API Versioning Strategies: On REST and GraphQL Differences…
I examine versioning approaches in REST and GraphQL APIs with concrete examples from my experience and a comparative analysis.
Technology
✍️ Hand-written
The Silent Death of the System: OOM Killer and My VPS Journey
A detailed look at the Out-of-Memory (OOM) Killer incidents I experienced on my VPS, the intricacies of system memory management, and the silent deaths caused.
Technology
Data Integrity in AI-Powered Content Pipelines: Practical Approaches
Ensuring data integrity in AI-powered content pipelines is critical. I'll share practical approaches, from ingestion to output, for issues I've encountered in.
Technology
✍️ Hand-written
Moving My GitHub Actions Runner to My Own VPS
A step-by-step guide on how I moved my GitHub Actions runner to my own VPS and reduced costs, while meeting my specific needs.
Technology
SQLite and Concurrency: The Lockout Experienced at islistesi.com
A first-hand account of the SQLite concurrency and lockout problems I faced in the islistesi.com project, with the solution steps and lessons learned.
Technology
✍️ Hand-written
Overlooked Errors in My AI Content Pipeline: The Importance of
I explain how I solved duplicate records and token waste issues in AI content generation processes using idempotency principles.
Technology
Three Wrong AD Tier Model Assumptions: 8 Months in the Field
Microsoft tier model (T0/T1/T2): three assumptions debunked during 8 months of field transition. Lessons learned the hard way.
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Quota Fail-Over Discipline in Multi-Provider AI Architecture
Fail-over discipline across Gemini, Groq, Cerebras in production AI: quotas deplete invisibly, silent decay degrades quality unnoticed.
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Nginx's Sneaky DNS Trap: Failing to Reach Docker Containers
How I solved Nginx's failure to reach Docker containers on my own VPS. An in-depth look at the `resolver` directive and the need for dynamic network.
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✍️ Hand-written
My Own Script Killed My CI Runner: The Dark Side of Cleanup
I'm sharing how a cleanup script I wrote on my GitHub Actions runner crashed my system, and the lessons I learned from this painful experience.
Technology
VPS Swap Fire: A Nightmare Started by a Kernel CVE Patch
I recount the nightmare I experienced when swap usage on my own VPS spun out of control, and the process that began with a Kernel CVE patch.
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Cloudflare Cache's Blind Spot: The Cost of Bypass Rules
I explain the unexpected effects of Cloudflare cache bypass rules and how I overcame them with Nginx to improve performance. My experiences on my own VPS.
Technology
Trying to Solve Every Problem With Kubernetes: Unnecessary…
From small projects to enterprise systems, the operational load and cost of trying to solve every problem with Kubernetes — through my own experience.
Technology
Collecting Data Is Easy, Collecting Reliable Data Is Hell: Field...
From my own experience: pitfalls of raw data collection, anonymization, anomaly detection and operational lessons for building a reliable data pipeline.
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I Defend the Monolith: Because I've Seen Production
While the microservices wind blows, my production experience shows why monolithic structures still hold value. A pragmatic perspective.
Technology
I Trusted a 1 GB RAM VPS Too Much: The OOM Story and Layered Defense
How I rode out the OOM (Out of Memory) crisis while running 13 containers on a 1 GB RAM VPS, how kcompactd0 captured the CPU, and the fixes I shipped...
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✍️ Hand-written
3rd OOM on the VPS: Parallel Builds and a flock Mutex Story
My blog automation collided with another project's build. RAM ran out, sshd reset. Hard reboot + flock for a global build mutex.
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Docker Logs Quietly Killing the Disk: A Log Rotation Story
How Docker logs silently filled up the disk on my VPS, and the log rotation strategies I applied to fix it.
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AI Content Generation: Not as Passive as You Think — It Demands…
The operational challenges I faced while building my own AI-driven blog pipeline, and how I solved them. AI content generation, contrary to popular belief…
Technology
The Cost of a Single Hardcoding Decision in System Architecture
An in-depth look at the long-term costs and risks created by a simple 'hardcoding' decision in system architecture.
Technology
The Silent Dead End of Distributed Lock Mechanisms: An Operational War
We dig deep into the complex operational challenges, hidden dangers and potential dead ends of distributed lock mechanisms.
Technology
Kernel Memory Wars: The Hidden Swap Trap and Its Solutions
Want to understand the hidden swap trap on Linux systems and learn memory management strategies for high-performance systems? Detailed…
Technology
Vault Unlocked: The Hidden Secret in the Environment Variable
Environment Variables play a vital role in application configuration. But mismanaging them can leak hidden secrets and…
Technology
The Overlooked Detail of Disaster Recovery Testing
Disaster recovery tests aren't only about technology. In this post we dive into the human factor and processes that decide DR plan success...
Technology
BGP Neighbor Wars: The Hidden Collapse of the Network
BGP neighbor wars can lead to a hidden collapse of your network. In this guide, dig deep into BGP neighbor problems and their solutions.
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Solving the Mystery of Lost Messages in Event-Driven Architecture
Take a deep look at the causes and solutions for lost messages in event-driven architectures. Boost your systems' reliability with our technical guide.
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The Eventual Consistency Trap: The Mystery of the Lost Orders
A deep look at the risks the eventual consistency model brings to distributed systems, and how to prevent critical data loss like missing orders.
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Database Replication Lag: The Invisible Disaster
Dive deep into the causes, impacts, and strategies to prevent database replication lag, an 'invisible disaster.' Ensure data consistency and...
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Stealth Resource Contention in Containers: Problems and Solutions
Learn about stealth resource contention issues in containerized environments and effective solutions to this complex problem.
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Hidden Route Conflicts in Multi-Cloud Networks and How to Solve Them
Explore the network complexity of multi-cloud environments, the causes and impact of hidden route conflicts, and strategies for preventing these problems.
Technology
✍️ Hand-written
First OOM: kcompactd at 92% CPU, sshd Reset, Hard Reboot
RAM ran out on my VPS, swap filled up, sshd dropped the connection. When the Astro build triggered an OOM, I decided to put together a layered pipeline defense.
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Cold Start in Serverless Apps: A Hidden Performance Trap
I take a deep dive into the Cold Start problem in serverless architectures — why it happens, what it does to performance, and how to actually dodge it…
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The IaC Drift Nightmare: A Hidden Configuration War in Production
IaC drift is a sneaky enemy that creates unexpected configuration discrepancies in production. In this post I dig into what drift is, why it shows up, and…
Technology
Database Connection Leaks in Production: The Quiet Resource Wars
Connection leaks in production are a sneaky threat — they drain system resources without anyone noticing and quietly tank performance. In this post we look at…
Technology
Service Mesh Sidecar Overhead: A Hidden Performance Tax
I dig into the hidden performance costs of the service mesh sidecar pattern — resource consumption, latency, and operational cost — and how to reason about…
Technology
Firewall Rule Dependencies in Production: A Network Nightmare
How do firewall rule dependencies in production turn network management into a tangled nightmare? I walk through the real challenges and the strategies…
Technology
Immutable Infrastructure: An Operational Revolution in the Cloud
Learn the principles of Immutable Infrastructure in the cloud and find out how it can boost your operational efficiency. Step by…
Technology
Certificate Expiry: The Silent Security Bombs in Production
The critical security and operational risks that expiring certificates cause in production environments, why they slip through the cracks, and effective…
Technology
Critical DNS Resolution Failure: The Invisible Network Disaster
Take an in-depth look at the invisible network disasters caused by DNS resolution failures and the impact this critical issue has on businesses.
Technology
The Virtual Network Gateway Performance Mystery: A Hidden…
We investigate the overlooked performance bottlenecks of virtual network gateways in production. This article covers why they matter, the hidden problems…
Technology
The Silent Betrayal of Reverse Proxy Buffer Settings
Discover the hidden impact of reverse proxy buffer settings on performance and security. Optimization tips and tricks on the Mustafa Erbay blog!
Technology
✍️ Hand-written
Cloudflare HTML Cache Stuck at 1.1%: Recovery with Nginx map
Cloudflare cache was stuck at 1.1%. Astro Node adapter returns max-age=0 for HTML. Override based on content-type via nginx map directive.
Technology
AI Model Drift: The Silent Betrayal of Model Drift in Production
Discover what AI model drift is, its types, its silent effects in production, and how we can build proactive strategies to counter this critical threat.
Technology
'Chatty' Communication in Event-Driven Microservices: The Dark Side…
An in-depth look at the challenges of 'chatty' communication frequently encountered in event-driven microservice architectures, and how to address them.
Technology
✍️ Hand-written
Docker Ate 56 GB of Disk in a Day: Building a Cleanup Automation
Disk hit 100% on my VPS and my blog couldn't publish for 5 hours. Docker build cache 33 GB, unused images 23 GB. Pruning + a systemd timer is the permanent fix.
Technology
The Hidden Trap of Time Synchronization: Phantom Bugs in…
Learn why time synchronization is critical in distributed systems and how to detect and resolve the elusive 'phantom bugs' it can cause.
Technology
Broadcast Storms in Virtual Networks: The Hidden Killer of…
Examine the causes and impact of broadcast storms that can erupt inside virtual networks of microservice architectures, and learn how to prevent this…
Technology
✍️ Hand-written
An Evening of Quirk Hunting in My AI Content Pipeline: 3 Bugs, 1…
My AI content pipeline blew up with three different format quirks: a slashed tag, a quoted date, a dotted-i character. Solved with a single normalizer.
Technology
Virtual NIC Queues: The Hidden Performance Killer
Learn how virtual network interface queues hurt network performance and how I get past this hidden bottleneck.
Technology
The 'Thundering Herd' Problem in Distributed Systems: Anatomy of a…
Take a deep look at the 'Thundering Herd' problem that threatens performance and stability in distributed systems. Understand this destructive effect and…
Technology
The Silent Disaster of Database Read Replicas: The Stale Data…
The performance and scalability gains read replicas offer come hand-in-hand with the stale data problem — examine this nightmare and how to wrestle it under…
Technology
The Hidden Performance Killer in a VMware ESXi Cluster: Storage…
The source of those unnoticed performance problems on your VMware ESXi cluster might just be Storage I/O Control. A detailed look and optimization advice.
Technology
ConfigMap and Secret Management in Kubernetes: The Anatomy of an…
Explore the challenges, best practices, and solutions around managing ConfigMaps and Secrets in Kubernetes. Learn how to head off the operational nightmares.
Technology
Hidden Network Dependencies: The Anatomy of Silent Production Failures
Discover the hidden network dependencies that quietly bring production systems down. This article walks through the causes, symptoms, and prevention…
Technology
Model Drift: The Silent Killer in Production
Find out how machine-learning models lose performance over time and why Model Drift is a silent killer for the AI systems you run in production...
Technology
Distributed Tracing Issues in Critical Systems: The Anatomy of…
Take a deep dive on Mustafa Erbay's blog into the complexity of distributed tracing in critical systems and the invisible errors that come with it…
Technology
Kafka Consumer Group Rebalancing: Understanding the Pauses I See…
Kafka consumer group rebalancing is one of the foundational mechanics of distributed streaming. This piece walks through what triggers it, what it costs…
Technology
Operational Crises I Have Faced Running GitOps for Cloud…
The operational crises I keep running into when I manage cloud infrastructure with GitOps — and the patterns that have helped me avoid the worst of them.
Technology
Feature Flags and Configuration Governance: Parameter Store and Audit
Treating configuration like a product: feature flags, parameter store, schema, approval flow, audit log, and rollback discipline.
Technology
The Terraform Plan Mystery: Automation That Deletes the Wrong Resource
Take a deep look at Terraform plan's surprise resource deletions and the strategies for protecting your automation pipelines from these kinds of failures.
Technology
From Monolithic Database to Microservice Hell: The Data Consistency…
Discover the data consistency problems you run into when migrating from a monolithic database to a microservice architecture, plus solutions, in this…
Technology
Kubernetes Network Policies: Invisible Walls Between Pods
Learn how to secure network traffic between pods using Kubernetes Network Policies. A from-A-to-Z guide with detailed examples for Network…
Technology
Database Provisioning Mistakes in the Cloud and How to Fix Them
A deep look at database provisioning mistakes I keep running into on cloud platforms, the symptoms they cause, and the fixes that actually hold up in…
Technology
Concurrent Deployment Stress Testing on Cloud-Native Infrastructure
Why concurrent deployments matter on cloud-native platforms, and the role stress testing plays in keeping them from becoming incidents.
Technology
Retry Storms: Timeout Budget and Latency Amplification
In distributed systems, badly designed retries make outages worse. An approach to limiting damage with timeout budgets, retry budgets, and backpressure.
Technology
Secure B2B File Flow with an Object Storage Dropzone
An approach to building secure B2B file exchange using an object storage dropzone, short-lived access, and audit trails — instead of an SFTP bottleneck.
Technology
Outage Day in Cloud Architecture: A Real DNS Failover War Story
A real war story about an outage day in cloud architecture and why DNS failover strategies matter.
Technology
Certificate Expiry Nightmare: The Hidden Traps of Auto-Renewal
Explore the hidden traps and possible failure modes inside the auto-renewal process of certificates that are vital to digital security. Don't let your security…
Technology
Routing Nightmares in a Multi-Cloud Network Mesh: Managing the…
Routing pain in Multi-Cloud Network Mesh setups, the complexity behind it, and how to climb out of these nightmares with practical solutions and…
Technology
Model Drift and Automated Rollback in Edge AI Operations
Discover the causes and types of model drift in Edge AI systems, plus how to handle the problem with automated rollback mechanisms.
Technology
Isolating Bad Nodes with Envoy Outlier Detection
Threshold, signal and rollback discipline for Envoy outlier detection — shrinking the blast radius of broken nodes in distributed systems.
Technology
State Management With Event Sourcing in Cloud Native Distributed…
We dive into state management strategies and the challenges that come with using event sourcing in cloud native distributed systems.
Technology
Cloud Database Replication: Strategies for High Availability
Learn database replication strategies in cloud environments. Best methods for high availability, data security, and performance gains.
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Hunting Silent Packet Loss During MLAG Failover
A signal set, failover testing playbook, and operational decision tree for tracking down silent packet loss in MLAG and LACP topologies.
Technology
Cloud Cost Optimization: A Real-World Case Study and Success…
Get to know cloud cost optimization through a real-world case study and successful strategies. In-depth notes from Mustafa Erbay.
Technology
Syslog on Network Devices: TLS, Buffering, and Log Storm
A model for turning syslog loss and log storm risk into a reliable log channel for incident/audit, using TLS/relay, disk-backed queue, and rate limiting.
Technology
Kubernetes Pod Security: Invisible Battles with Network Policies
Discover the power of Network Policies for securing pod-to-pod networking in Kubernetes. Effective answers to invisible threats.
Technology
Protecting Router & Switch Control Plane with CoPP/CPP…
A CoPP/CPP model that classifies and polices routing, management, and ICMP traffic on the router/switch control plane to reduce CPU exhaustion and adjacency…
Technology
OSPF/IS-IS Authentication: Block Rogue Neighbors in the Routing Domain
Reducing the risk of rogue neighbors and route injection in the routing domain through OSPF/IS-IS authentication, key rotation, and control-plane hardening.
Technology
Multi-Region Traffic Steering and Failover Discipline with GSLB
Traffic steering discipline for multi-region services using GSLB, built around health signals, hold-down, and controlled failback.
Technology
BMC (iDRAC/iLO/IPMI) Hardening and Management Segmentation
An operating model for the BMC (iDRAC/iLO/IPMI) attack surface using segmentation, identity, audit, and break-glass to keep it secure and auditable.
Technology
DoH/DoT/DoQ in Enterprise Networks: Policy and Visibility
A controlled-transition, telemetry, and runbook approach for enterprise policy and visibility in a world of encrypted DNS via DoH/DoT/DoQ.
Technology
BGP Traffic Engineering Runbook for the Enterprise Edge
A practical runbook for steering traffic with localpref, community, prepend, and MED in multi-ISP and multi-POP environments — measurable and reversible.
Technology
Load Balancer, Keepalive, and Retry Budgets for gRPC/HTTP2 Traffic
A practical architecture and operations guide for handling long-lived HTTP/2 connections, idle timeouts, and retry storms without losing your SLO.
Technology
Online Schema Migration: Expand/Contract, Backfill, and Dual Write
An expand/contract approach for schema changes without downtime, plus backfill strategy, dual-write risks, and a rollback plan.
Technology
Sticky Sessions and Load Balancer Decisions for Stateful Traffic
When are sticky sessions essential and when are they technical debt for WebSocket, long TCP sessions and stateful applications? A decision matrix grounded…
Technology
Enterprise SSO Federation: A SAML/OIDC Gateway Architecture
An SSO broker design that unifies legacy SAML applications and modern OIDC services under a single identity policy — secure and operationally manageable.
Technology
MTU and PMTUD Blackhole: An Incident Runbook
When some users work and others don't, a frequent cause is broken PMTUD and an MTU blackhole. Diagnosis steps and a permanent fix.
Technology
Edge Service Design with BGP Anycast: DNS and DDoS Resilience
A practical edge design guide that addresses routing, health signals, capacity, and attack scenarios together to see Anycast's real benefits.
Technology
Egress Control in ZTNA: Designing Against Data Exfiltration
ZTNA isn't just about inbound access. A practical approach to data leakage with egress (outbound) control, DLP signals and service-centric segmentation.
Technology
DDoS Scrubbing Center Design: GRE, BGP, and Failover
GRE tunnels, BGP signaling, capacity, and an operational runbook to keep the service up by diverting traffic to scrubbing during an attack.
Technology
Preventing Edge Outages with BGP Max-Prefix Limits
Designing, monitoring, and writing an incident runbook for the max-prefix guardrail that protects edge routers during route leaks and bad-prefix waves.
Technology
Enterprise DNS Firewall with DNS RPZ: Threat Blocking and Operations
Build a sustainable DNS security control by blocking threat domains via RPZ at the recursive resolver, with proper exception handling and observability.
Technology
Path Selection and Incident Triage with SLA Probes in SD-WAN
Choosing the right path for application classes via active probes that measure latency/jitter/loss; rapid diagnosis during degradation and a controlled…
Technology
Self-Hosted CI Runner Security: Isolation, OIDC and Secrets
A practical model that lowers supply-chain risk on self-hosted CI runners with isolation, network boundaries and OIDC-based short-lived authorization.
Technology
Network Telemetry with IPFIX/NetFlow: A Pipeline for DDoS and Capacity
Build an operational telemetry pipeline by collecting and enriching IPFIX/NetFlow streams for DDoS triage, capacity planning, and anomaly detection.
Technology
QUIC / HTTP/3: Security and Operations on Enterprise Networks
A practical approach to managing HTTP/3 traffic over UDP/443 without breaking security, visibility, or performance.
Technology
Kubernetes Etcd Encryption at Rest + KMS Design
Protecting Secrets with real cryptography rather than just base64: encryption configuration, KMS integration, and an operational rotation model.
Technology
L2 Encryption with MACsec in Enterprise Networks
Hardening campus and data center backbones by encrypting L2 links with MACsec (802.1AE): design choices, risks, and operations.
Technology
Firewall Rulebase Cleanup: Waves with Hitcount and Shadow Rules
Pull your firewall rule set out of the 'don't touch it, it'll explode' state with hitcount, log evidence, ownership, and a wave-based approach to safely…
Technology
Segmentation and Governance with Transit Gateway in Hybrid Cloud
A practical architecture guide that handles hub-spoke and Transit Gateway design together with security, route control, and operational observability.
Technology
Route Analytics with BGP BMP: Visibility and Incident Triage
Bring route leak, flap, and blackhole events down to minutes by combining BMP telemetry, route analytics, and an alarm model in a practical approach.
Technology
Kernel Live Patching and a Maintenance Model on Enterprise Linux
Managing kernel security patches without reboot pressure: a live-patch approach, the risks, a ring strategy, and operational discipline.
Technology
Object Storage with Ceph: Failure Domain and Recovery Design
Beyond installing Ceph: an architectural approach to failure domain, capacity, and recovery behavior so the cluster can actually heal during a fault.
Technology
Time Synchronization in Critical Systems: NTP, PTP and Observability
An architectural, security-focused, and operational view of NTP/PTP for distributed systems where TLS, log correlation, and consistency depend on accurate time.
Technology
Health Check Blindness in L4 Pools: Failover and Blackholes
When pool members appear 'UP' but traffic vanishes, combining active checks with passive signals to design failover that actually reflects reality.
Technology
Trust Boundary at the SD-WAN Edge: Egress Policy, DNS, and Logging
Preserving the trust boundary across DIA / DC / cloud egress in SD-WAN: traffic classification, DNS strategy, split-tunnel, and a centralized log model.
Technology
From Pilot to Production: 802.1X (NAC) in Enterprise Networks
A field-tested approach to taking 802.1X from pilot to production: identity, policy, exceptions, and the runbook that turns it into a living control plane.
Technology
Cache Stampede (Thundering Herd) and Operational Defenses
A guide to taming the stampede (thundering herd) risk that can crush a backend after TTL expiry or a cache flush — using jitter, singleflight, and stale…
Technology
Enterprise Edge Resolver Architecture with Anycast DNS
An approach for placing the in-house DNS resolver tier near the POP/branch using Anycast — cutting latency while improving operability.
Technology
IPv6 in Enterprise Networks: A Roadmap from Dual-Stack to IPv6-Only
A field-applicable plan for rolling out IPv6 not just as 'an address' but together with DNS, security, observability, and operational reflexes.
Technology
Change Brakes via Error Budget: Designing a Release Gate
How do I turn SLO and error-budget signals into a release gate that controls change without halting it? Field-tested thresholds and an operations flow.
Technology
DSCP and QoS on the WAN: End-to-End Prioritization
A guide to running QoS not as a magic wand but as an operational discipline managed with end-to-end measurement and a real trust boundary.
Technology
A Safe Experiment Plane for Chaos Engineering
Hypotheses, blast radius and automatic rollback guardrails so resilience tests don't turn into blind risks in production.
Technology
SLO-Based Degrade Modes and Load Shedding
Producing controlled loss instead of a random collapse when a system is under pressure: rate limits, queues, feature flags and prioritization.
Technology
Secure Boot + TPM: A Root of Trust for Server Infrastructure
A practical model for making the trust chain from firmware to kernel measurable, without locking operations down in the process.
Technology
DDoS Response Runbook with BGP RTBH and FlowSpec
A controlled approach to reducing DDoS impact during operations using an RTBH/FlowSpec decision tree, verification steps, and a rollback plan.
Technology
Database Connection Pool Saturation and the Latency Feedback Loop
A practical framework to detect the queue, timeout, and retry loop that emerges when a connection pool clogs, and to intervene safely.
Technology
Replay and Idempotency in Messaging: Operational Patterns
Bringing reliable processing guarantees to message-based architectures with outbox, dedup keys, DLQ, and a replay runbook.
Technology
Reducing Outage Impact in Planned Maintenance with BGP Graceful…
Graceful restart logic, risks, verification steps, and a rollback standard for doing BGP maintenance without 'dropping routes'.
Technology
Maintenance Wave Architecture for Patch Orchestration on…
An architectural decision frame for rolling out patches across large platform fleets in controlled waves rather than in a single pass.
Technology
Safe Version Migration in ERP Infrastructures via Transaction…
A transaction-shadowing approach for testing a new release inside critical ERP flows without producing live impact.
Technology
Integration Rollout in ERP Infrastructures via Release Rings
An enterprise architecture approach that grows ERP integration flows through controlled rings rather than flipping the core in one shot.
Technology
Service Impact Analysis with a Dependency Graph on Enterprise…
An approach that turns architectural dependencies from a static diagram into readable impact analysis available before changes.
Technology
A Dedicated DNSSEC-Validating Resolver Layer in Enterprise Networks
An enterprise architecture approach that places DNSSEC validation in a dedicated resolver layer to raise trust in name resolution.
Technology
Test Data Masking Factory for ERP Infrastructures
A repeatable masking pipeline for ERP test environments that preserves realistic data behavior, keeps security intact, and is reproducible.
Technology
Break-Glass Access Vault Architecture in Enterprise Cloud
An architectural approach to managing privileged emergency access not through always-on permissions but via an auditable, short-lived control plane.
Technology
Regional Integration Cells in ERP Infrastructures
Explores the regional cell approach for ERP integrations to manage data sovereignty, latency, and blast radius.
Technology
A Digital Twin Layer for Policy Drift in Enterprise Networks
A digital twin approach for seeing drift in firewall, routing, and segmentation rules without touching production.
Technology
RPKI-Based BGP Trust Chain in Enterprise Networks
An architectural approach to building an RPKI-based trust chain in enterprise networks to reduce BGP route leak and forged origin risks.
Technology
A Quarantine Account for the Management Plane in Enterprise Cloud
Architectural guide covering the quarantine account approach and its boundaries when isolating management services from production resources in a cloud…
Technology
A Backbone Capacity Planning Model for Enterprise Networks
An architectural model that manages backbone capacity ahead of growth by reading underlay and service traffic together.
Technology
A FinOps Guardrail Layer for the Enterprise Cloud
An architectural approach that bounds cloud cost from the start with policy, tagging, and lifecycle rules instead of reporting on it after the fact.
Technology
An Active-Active Integration Corridor for ERP Infrastructures
An architectural approach focused on resilience and consistency that runs the integration layer active-active without straining the ERP core.
Technology
Designing a Reporting Replica for ERP Infrastructures
An architectural approach that protects the production transactional load while moving reporting and analytics queries onto a separate data surface.
Technology
SLO-Based Capacity Reservation in Enterprise Cloud
A cloud architecture approach that ties capacity decisions to service objectives rather than average utilization alone.
Technology
An Idempotent Retry Corridor in ERP Integrations
A retry corridor that prevents repeated calls from producing data inconsistencies and improves resilience in ERP integrations.
Technology
Reversible Schema Migration Pipeline in ERP Infrastructures
An ERP approach that manages database schema changes through a reversible and observable migration pipeline, without amplifying outage risk.
Technology
Segment-Based Resolution in Enterprise Networks with DNS Firewall
A DNS architecture that separates the resolution flow per segment, reducing abuse risk, data exfiltration, and operational blind spots.
Technology
An Observability Control Room for ERP Infrastructures
An observability control room approach that gathers ERP-adjacent critical flows not into a single pane but into a single operational language.
Technology
Cybersecurity Fundamentals and Practical Tips
A guide that ties core security controls — identity, network segmentation, patch management and observability — into a checklist you can actually apply in…
Technology
Shared-Service VPC Decision Matrix in Enterprise Cloud
An architectural framework that explains when consolidating DNS, egress, security and observability services into a single VPC is the right call.
Technology
Certificate Lifecycle Architecture on Enterprise Platforms
An architectural approach that turns TLS certificates from a file-renewal chore into a first-class enterprise platform component.
Technology
A Message Queue Isolation Corridor in ERP Infrastructures
A message queue isolation approach that separates the integration load between the ERP core and surrounding systems.
Technology
Control Plane Decoupling Strategy in Enterprise Platforms
An architectural approach that separates the control plane from the product lifecycle as platform teams scale shared services.
Technology
Secret Key Distribution Plane in ERP Infrastructures
A central secret key distribution architecture that reduces the burden of secret handling across ERP integrations and batch flows.
Technology
BGP EVPN Segmentation Strategy in Enterprise Networks
An architectural framework for the BGP EVPN approach that makes segmentation more scalable in data center and campus networks.
Technology
Migration Strategy to an L3 Clos Fabric in Enterprise Networks
An architectural roadmap for moving from layered bottleneck designs to an L3 Clos fabric in growing data center networks.
Technology
A Telemetry Control Plane for Enterprise Observability
An architecture that manages telemetry cost and security through a central decision layer instead of scattered agents and pipelines.
Technology
Batch-Window-Free Workflow Architecture in ERP Infrastructures
An architectural approach that converts ERP processes tied to nightly batch windows into event-driven and observable flows.
Technology
Jump-Host-Free Management Corridor in ERP Infrastructures
An enterprise access architecture that manages privileged access without depending on a single jump server.
Technology
Infrastructure as Code with Terraform
A practical guide to state management, module design, drift control, and a safe promotion flow when building IaC with Terraform.
Technology
Integration Contract Governance in ERP Modernization
An integration contract approach that protects version, ownership, and change boundaries of services around the ERP.
Technology
Designing the Shared Identity Boundary in the Enterprise Cloud
A shared design approach that simplifies identity, authorization, and operational boundaries in multi-account cloud setups.
Technology
DNS-Based Service Routing in Enterprise Networks
A framework for treating the DNS layer as a service routing and resilience control point, not just a name resolution service.
Technology
Active-Passive Disaster Recovery for ERP Infrastructure
The fundamentals of building a realistic active-passive recovery model for ERP systems, covering data consistency, network routing, and operational roles.
Technology
AI-Assisted Coding Tools
A practical framework for evaluating AI coding tools across productivity, security, and quality, and adopting them safely as a team.
Technology
Ephemeral Management Access in Enterprise Infrastructure
Covers the ephemeral management access design used to reduce the burden of persistent bastions and shared accounts.
Technology
Privileged Access Segmentation in ERP Systems
A network and access segmentation approach that reduces standing broad permissions when administering ERP core systems.
Technology
Centralized Egress Design in Enterprise Networks
Principles for collecting enterprise outbound internet traffic into a visible, auditable, and scalable egress layer.
Technology
Integration DMZ Design in ERP Infrastructures
An integration DMZ approach for connecting ERP systems to external services in a secure and manageable way.
Technology
Golden Path Design in Enterprise Platforms
An architectural framework for the golden path approach so platform teams can deliver speed and standardization together.
Technology
Data Replication Layer in ERP Modernization
A data replication layer design approach for distributing the integration load without disrupting the ERP core.
Technology
Isolated Recovery Zone in Backup Infrastructure
An approach to building an isolated recovery zone against ransomware and management mistakes, going beyond simply storing backups.
Technology
Microservice Architecture with Kubernetes
A practical guide that addresses service boundaries, traffic management, SLOs, and platform responsibilities together when designing microservices on…
Technology
Telemetry Sampling Strategy for Enterprise SIEM
Telemetry sampling design principles for keeping log volume under control without losing security visibility.
Technology
Integration DMZ Pattern in ERP Infrastructures
An approach for collecting partner and external service integrations in a secure intermediate layer without exposing ERP core systems directly.
Technology
Out-of-Band Management Plane in Enterprise Networks
An out-of-band design approach that separates management access from production traffic on critical network and server infrastructures.
Technology
Policy-Based Security at the Enterprise API Gateway
An enterprise approach that centralizes identity, rate-limit, and data-protection policies at the API gateway layer.
Technology
Programming Languages Worth Learning in 2026
A practical framework for picking a language not by 'trend' but by production use-case, team cost, and operability.
Technology
East-West Traffic Visibility Without a Service Mesh
An approach for making east-west traffic visible across microservice and VM-based environments without standing up a service mesh.
Technology
Designing Self-Service Infrastructure with Platform Engineering
A guide to designing, at enterprise scale, a self-service platform approach that takes infrastructure teams out of the bottleneck role.
Technology
Resilience in Enterprise DNS and Service Discovery
Design principles for keeping the DNS and service-discovery layer in hybrid infrastructures from becoming a single point of failure.
Technology
Enterprise Defence with Zero Trust Network Segmentation
An observable and actionable Zero Trust segmentation approach that reduces lateral movement on enterprise networks.
Technology
Cost-Aware Design on a Kubernetes Platform
Practical principles for a Kubernetes platform architecture that scales on the cloud while keeping budget discipline.
Technology
Zero Trust Architecture on Enterprise Networks
How to build a Zero Trust approach across enterprise networks through identity, segmentation and observability layers.
Technology
Designing a Landing Zone in the Hybrid Cloud
A landing zone approach for getting network, security, and governance right from day one in enterprise cloud migrations.
Technology
Event-Driven Architecture in ERP Integrations
A guide to building a resilient, observable, and loosely coupled integration architecture around enterprise ERP systems.
Technology
Observability Stack Design
A practical observability design that brings logs, metrics, and traces together into a single operational model.
Technology
Software Development with Artificial Intelligence
AI-powered software development tools and their impact on modern software engineering.
Technology
Microservices Are Not Always The Right Answer
The allure of microservices in software architecture is strong, but twenty years of experience have shown me they're not always the right solution. On this.
Technology
I Locked Up the Server Because of Docker: A Lesson in Trust and
I'm sharing the moment Docker completely locked up my server and the valuable lessons I learned from that mistake. How a wrong assumption can lead to a big...
Technology
Kubernetes Is Not For Everyone: A Look With 20 Years of Experience
With 20 years of system architecture experience, I discuss why Kubernetes is not the right solution for everyone, focusing on cost and complexity.
Technology
Mobile Offline-First Sync: Expectations vs. Realities
We delve into the intricacies of offline-first synchronization in mobile applications, the challenges encountered, and real-world expectations.
Technology
AI Won't Make Us Unemployed, But...
With 20 years of system architect experience, I discuss AI's future role and how it will shape us. We won't be unemployed, but we will transform.
Technology
I Paid the Bill for AI-Written Code Months Later
A personal experience about the cost of using AI-generated code without questioning it, and the lessons I learned in the process.
Technology
Error Handling Approaches: Exceptions or Result Types?
Error handling in software, choosing between Exceptions and Result types, is often a dilemma. Based on my 20 years of experience, I'll explain these two.
Technology
Open Source, Yet Centralized
I examine the singular control mechanisms behind open-source projects and their long-term effects through my own experiences.
Technology
20 Lessons I Learned in Server Management
In my twenty-year journey in system administration, I learned much more than just technical knowledge. The most important lessons came from my mistakes, my.
Technology
What I Learned Developing ERP: Much More Than Code
Working on a manufacturing ERP for over 5 years, I learned that software architecture is actually organizational flow. Here's why we need to focus on much more.
Technology
Technical Debt: The Silent Killer, A Project's Most Secret Cost
In my career, technical glitches weren't the real problem; it was the technical debt accumulated by saying 'we'll fix it later.' This silent killer's impact on.
Technology
Is Open Source Sustainable?
I've worked with countless open-source projects in my career. But how sustainable is this 'free' world really? I discuss this topic with my experiences.
Technology
Where Does Knowledge Come From in the Age of AI?
With 20 years of experience, I question how AI is changing our quest for knowledge and the true value of information in the post-Stack Overflow era.
Technology
Artificial Intelligence and Machine Learning: The Technology of…
Explore the foundations, applications, and future potential of artificial intelligence and machine learning through Mustafa Erbay's perspective.