Working notes, tended over time. Some are fresh seedlings, some have been growing for a while, a few are evergreen.
RangeAssignor looks naive until you join two topics — then its alignment is the whole point. Choosing an assignment strategy is choosing what your consumers are allowed to assume.
2 min#kafka#distributed-systems#go
Notes after a month with Triumph's little triple on Cyprus roads — what the spec sheet doesn't tell you about heat, hairpins and the sound at 7000 rpm.
2 min#motorcycles#offline
Every INSERT into MergeTree creates a part on disk. Feed it row-by-row and you trade write throughput for a merge storm — batch, or let async inserts batch for you.
3 min#clickhouse#performance
When 100k RPS worth of goroutines read a lookup table that reloads every minute, RWMutex is the wrong tool. Build the new snapshot aside and swap one pointer.
2 min#go#concurrency#performance
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