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Date	Provider	Score	Summary
12 Aug 2026, 10:22 PM	Hacker News	7.5	Tracking down the 16-year-old WAL-reset SQLite bug Tailscale experienced 19 separate SQLite database corruption incidents over six months, traced to a 16-year-old WAL-reset bug deep in SQLite. Their architecture uses one SQLite database per shard with a single Go writer, and their backup pipeline snapshots the full DB file to S3 every few minutes—corruption was first detected when a downstream data pipeline reading those S3 backups reported an error. Why: If you run SQLite in production and take file-level backups or snapshots (especially with WAL mode), you should run PRAGMA integrity_check against your backups routinely—Tailscale's corruption was invisible to the live writer and only surfaced from the backup consumer. Anyone shipping SQLite-backed services should review whether their backup method correctly handles WAL state. sqlite postmortem database-corruption backups incident-writeup

Date

Provider

Score

Summary

12 Aug 2026, 10:22 PM

Hacker News

7.5

Tracking down the 16-year-old WAL-reset SQLite bug

Tailscale experienced 19 separate SQLite database corruption incidents over six months, traced to a 16-year-old WAL-reset bug deep in SQLite. Their architecture uses one SQLite database per shard with a single Go writer, and their backup pipeline snapshots the full DB file to S3 every few minutes—corruption was first detected when a downstream data pipeline reading those S3 backups reported an error.

Why: If you run SQLite in production and take file-level backups or snapshots (especially with WAL mode), you should run PRAGMA integrity_check against your backups routinely—Tailscale's corruption was invisible to the live writer and only surfaced from the backup consumer. Anyone shipping SQLite-backed services should review whether their backup method correctly handles WAL state.