Study notes / build logs
Work through the problem. Check what actually works.
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Featured notes
- A Green Build Is Not a Live Release
Separate a successful build from evidence that a release is live.
- Why does the next page repeat a row? OFFSET and keyset pagination
Reproduce duplicate and skipped rows after inserts or deletes, then choose a pagination strategy.
- The site is deployed. Why am I still seeing the old version?
Trace stale pages through HTML, ETags, and asset URLs.
Recent notes
PostgreSQL backups: what pg_dump, WAL, and PITR actually do
2026-10-07
Supabase RLS Beyond the Policy UI: Make Authorization SQL Testable
2026-09-18
PostgreSQL RLS is not an automatic WHERE clause: four boundaries for multi-tenant data
2026-09-17
PgBouncer does not make PostgreSQL infinite: budget connections before choosing a pool mode
2026-09-16
LeetCode 198: House Robber with take-or-skip rolling states
2026-09-15
LeetCode 70: Climbing stairs from repeated recursion to two rolling states
2026-09-14
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