執筆
インサイト
本番システムをつくり、動かし続けるなかで学んだこと。私たち以外の誰かの役に立つように書き残しています。
- PostgreSQL
- Observability
- Latency
The p99 that was a cron job
For three weeks one endpoint’s p99 went to nine seconds every night at 02:10 and recovered on its own by 02:40. Nobody was awake to see it and the dashboard averaged it away. The fix was one word of SQL; the finding was the three weeks.
読了 3 分
- WebRTC
- TURN
What actually connects: TURN, and the networks that fight it
Every WebRTC tutorial ends at “and then ICE finds a path”. On the networks our users are actually on, it often does not. Three years of running a meetings product here, and the co…
読了 3 分
- SQLite
- Operations
SQLite in production, on purpose
We run several real sites on a single SQLite file, and we would do it again — but not for the reasons people usually give, and not without the four things that make it survivable.…
読了 3 分