The Ghost Writes Twice: Concurrent Updates and Silent Data Corruption Premium
Two services updated the same record simultaneously. One wins. The other silently loses. No error, just wrong data discovered three weeks later.
The Inbox & Outbox Pattern Free
How distributed systems guarantee message delivery without losing your mind - or your data.
The Microservice That Knew Too Much: Breaking Circular Dependencies Free
You split the monolith into 12 services. But service B calls A, which calls C, which calls B again. A circular dependency wrapped in JSON.
Rate Limiting Algorithms with Redis Free
A practical breakdown of three rate limiting algorithms - Fixed Window, Sliding Window, and Token Bucket - with plain-language explanations, Redis-backed Node.js implementations, and a trade-off comparison to help you pick the right one.
Designing a URL Shortener Free
A deep dive into designing a scalable URL shortening service like bit.ly - covering hashing strategies, storage, redirection, and analytics.