Proof by Stopwatch: A 4B Model Beats the Planner
Rohan Bansal rented 95 GPU hours and trained a 4B open-weights model to hand Postgres better execution plans than Postgres picks for itself. The most useful part of the writeup is where he measures the stopwatch and finds it can invent a win that never happened.
AIdatabaseopen-sourceHacker Newsfield-notes
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A Write That Vanished Into Thin Air
Tailscale's months of outages traced back to a data race in SQLite that had lurked for 16 years - a committed write, gone without a trace, no error raised.
sqlitedatabasesoftware-engineeringfield-notes
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