39 long-form articles on production engineering — how real systems fail, why, and what actually fixed them.
5 articles matching “HTTP”
WebSockets & Real-time20 min read
When you press Enter in Slack, the message does not travel over the WebSocket your client is holding open — it goes out as a separate HTTPS POST to chat.
Architecture Decisions20 min read
A senior-engineer walkthrough of the whole cache stack: CPU L1/L2/L3, TLB, OS page cache, DB buffer pool, in-process LRU (Caffeine), distributed cache (Redis/Memcached), HTTP cache + ETags, CDN edge, browser, DNS, reverse proxies, query plan cache.
Tradeoffs in Production15 min read
When a service buckles under load, the first instinct is to make the buffer bigger — and it's the most natural wrong answer in systems engineering.
Tradeoffs in Production16 min read
Kernel TCP keep-alive probes the network path; app heartbeats prove the peer process is serving; HTTP Connection: keep-alive only reuses sockets.
Load Balancing15 min read
A simple, ground-up guide: L4 forwards raw TCP/UDP by IP and port, L7 opens the HTTP request and routes by URL, host, headers or cookies.