DeWu Technology
Sep 28, 2022 · Databases
Design and Implementation of ClickHouse‑Based Log Storage with Hot/Cold/Archive Tiering
To replace Elasticsearch, the team built a ClickHouse‑based log platform that uses table‑level TTL and custom storage policies to automatically move data among hot (ESSD PL1), cold (ESSD PL0) and archive (OSS) disks, achieving faster writes, comparable query latency, and over 50 % cost reduction.
ClickHouseDatabaseHot/Cold Tiering
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