Episode 3 of 9 · Discord
Three engines, one schema: the message store that outlived two databases
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Three engines, one schema: the message store that outlived two databases. Start with the workload, because it picks the database. Writes are tiny, constant, and never edited afterwards. Reads want the last fifty messages, almost always. And every so ofte
Based on the board The Message Store Saga.
Covered in LSM 06-07: Compaction and Levels, Discord - the case study.
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