1223 points•239 comments•3w ago•by ropbear•tailscale.com ↗

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

Tailscale describes 19 database corruption incidents over six months tied to a long-standing SQLite bug affecting write-ahead logging and checkpoints. The company worked with SQLite developers, added live diagnostics, and built a transaction-logging pipeline to replay SQL against a known-good backup, leading to a fix. The outages briefly disrupted the control plane for some tailnets but did not expose private keys or network traffic.

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