SQLite is enough (again)
Every side project starts with "maybe Postgres this time" and ends with one SQLite file in WAL
mode. Back it up after stopping the service — the WAL is merged by then, and a plain
cp is a consistent snapshot.
notes
Small things I don't want to forget — game dev, tooling, servers.
Timers lie when the tab is hidden
Browsers throttle setInterval in background tabs to about once a minute, mobile
webviews may freeze it completely. Refresh state on visibilitychange instead of
trusting the counter you left running.
Retry the network, never the answer
If the request never reached the server, retry. If the server answered "no", don't — you'll only get the same "no" faster. Idempotency keys make the first case safe.
Fonts with a single glyph
Needed one digit to look different in a typewriter font. A subset font with a single glyph
and unicode-range does it without touching the original.