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How We Built an Atomic, Sharded Incremental Cache with 57ms Rebuild Times

This story is from 2026-10-20. It is preserved in the archive; the latest stories are on the live feed.

When building a local-first repository intelligence engine, speed is everything. A cold build on a 100k-file benchmark can take 45 to 55 seconds. But during active coding, developers expect instantaneous updates when saving a file. In TokenCap, we implemented an atomic sharded incremental cache in…

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  1. 2026-10-20 18:04 · DEV Community — AI
    How We Built an Atomic, Sharded Incremental Cache with 57ms Rebuild Times

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