~/cold-pathon main· 12 posts · last commit 2026-10-28
cat README.md
Long-form writing on databases, queues and the parts of production nobody demos. One post a month, with the code that goes with it — in Go, Rust and TypeScript.
insert into jobs (queue, idem_key, payload)values ($1, $2, $3)on conflict (queue, idem_key) do nothing;We replaced a broker with one table, a unique index and SKIP LOCKED. What we gave up, what we got back, and the numbers after six months.
Deniz Aksoy @deniz
git log --since=2026-01-01
/ filterjk move↵ open
7 posts
Shared hits, reads and the one line that tells you the planner was wrong.
#postgres #observability11 min
Incident review: 41 minutes of 2-second tails, a resolver with a 5-second timeout and ndots:5.
#incidents #networking8 min
Bounded queues, load shedding and why an unbounded buffer is just a slower outage.
#queues #distributed9 min
A 10% retry budget saved us more than any timeout tuning ever did.
#reliability #distributed12 min
Expand, dual-write, backfill, contract — with the exact migrations we ran.
#postgres #migrations7 min
One event per line, stable keys, and why we stopped logging stack traces at INFO.
#observability6 min
Stale caches, partial rollouts and the flag that turned itself back on.
#reliability #distributed10 min