API Design#api#versioning#backward-compatibility#deprecation#contracts
API Versioning Strategy: Backward Compatibility and Deprecation
How to evolve APIs safely with additive changes, contract testing, deprecation policy, and migration windows.
Hi, I am Mert.
I was born in Ankara and have been a software engineer for about six years — mostly on the backend side. I care about code, music, and nature. Here I share notes, technical writing, and occasional reflections.
Latest Posts
- Reliability#retry#timeout#circuit-breaker#resilience#microservices
Retry, Timeout, and Circuit Breaker: A Reliability Playbook
A practical guide to combining retry policy, timeout budgets, and circuit breaker states without creating retry storms.
- Architecture#outbox#cdc#kafka#microservices#consistency
Outbox Pattern with CDC: Practical Consistency for Event-Driven Systems
How to keep database state and published events consistent using transactional outbox, change data capture, and consumer idempotency.
- Databases#database#migration#zero-downtime#postgres#release
Zero-Downtime Database Migrations: Expand-Contract Playbook
A safe migration strategy for production systems using backward-compatible schema changes, phased rollouts, and controlled cleanup.
- Web Performance#cdn#cache#performance#web#devops
CDN Cache Invalidation Strategies: Balancing Speed and Correctness
A practical guide to cache invalidation with versioned assets, targeted purge policies, and stale-while-revalidate patterns.
- Distributed Systems#idempotency#distributed-systems#api-design#reliability#payments
Idempotency Keys and the Exactly-Once Myth in Distributed Systems
How to design idempotent write APIs, prevent duplicate side effects, and avoid exactly-once assumptions in real production traffic.
- Backend#temporal#workflow#distributed-systems#backend#reliability
Durable Workflow Orchestration with Temporal
How Temporal helps backend teams build reliable long-running workflows with retries, timeouts, compensation logic, and strong observability.
- DevOps#sre#slo#sli#error-budget#observability
SLO, SLI, and Error Budget: Operating Service Reliability
A practical SRE playbook for choosing user-centric indicators, setting realistic objectives, and using error budgets in release decisions.
- Security#passkey#webauthn#security#authentication#backend
Passkey and WebAuthn: A Practical Passwordless Authentication Guide
A backend-focused walkthrough of passkey registration/login flows, threat model improvements, and rollout strategy.
- Software Architecture#feature-flag#openfeature#release#backend#devops
Feature Flag Architecture: Safe Releases with OpenFeature
How to decouple deployment from release, run controlled rollouts, and keep vendor flexibility with OpenFeature.
