ClickHouse/docs/en/engines/database-engines/lazy.md

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31 Lazy

Lazy

Keeps tables in RAM only expiration_time_in_seconds seconds after last access. Can be used only with *Log tables.

Its optimized for storing many small *Log tables, for which there is a long time interval between accesses.

Creating a Database

CREATE DATABASE testlazy ENGINE = Lazy(expiration_time_in_seconds);

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