ClickHouse/docs/en/engines/database_engines/lazy.md
2020-04-03 16:23:32 +03:00

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---
toc_priority: 31
toc_title: Lazy
---
# 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 {#creating-a-database}
CREATE DATABASE testlazy ENGINE = Lazy(expiration_time_in_seconds);
[Original article](https://clickhouse.tech/docs/en/database_engines/lazy/) <!--hide-->