The lab notebook

Work in public. Show the reasoning.

Engineering notes on the changes we are making, the evidence behind them, and the trade-offs still under investigation.

Cassandra / Engineering

A faster Cassandra: what we’re changing in 5.0 and 6.0

Direct I/O, JDK 21, better GC signals, a cursor-based storage pipeline, and safer concurrent schema changes, explained from the branches and commits themselves.

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