39 long-form articles on production engineering — how real systems fail, why, and what actually fixed them.
5 articles matching “WebSockets”
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.
Production Incidents25 min read
Why “our queue guarantees exactly-once” is almost always a lie once your flow crosses a component boundary: Kafka EOS scope, ack-after-process, unique constraints, SQS FIFO, DB transactions with SMTP, retries without…
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.
WebSockets & Real-time4 min read
A production case study — how a small config issue brought down an entire IoT device fleet and what fixed it.