Practical guides on Python, Go, system design, and infrastructure—written by a Senior Engineer sharing 6 years of production experience.
ACID properties (Atomicity, Consistency, Isolation, Durability) guarantee reliable database transactions. Learn how they work, PostgreSQL examples, isolation levels, ACID vs BASE, and common pitfalls.
What is an API gateway and what does it do? Complete guide covering routing, authentication, rate limiting, Node.js implementation, BFF pattern, and comparisons of Kong, AWS API Gateway, nginx, and Traefik.
Cache-aside, read-through, write-through, write-behind — when to use each caching strategy, with Python and Node.js implementations, invalidation patterns, and cache hit-ratio metrics.