ClickHouse/docs/en/engines/database_engines/lazy.md

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toc_title: Lazy
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# Lazy {#lazy}

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

It’s 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-->
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+								# Lazy {#lazy}
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+								Keeps tables in RAM only `expiration_time_in_seconds` seconds after last access. Can be used only with \*Log tables.
-												docs

											
										
										
											2019-10-08 08:31:12 +00:00
-												Normalization for en markdown (#9763)


											
										
										
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+								It’s optimized for storing many small \*Log tables, for which there is a long time interval between accesses.
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											2019-10-08 08:31:12 +00:00
-												Normalization for en markdown (#9763)


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