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markstory merged 1 commit into from
May 10, 2026
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add ApcuEngine options section #8298

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11 changes: 11 additions & 0 deletions docs/en/core-libraries/caching.md
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Expand Up @@ -159,6 +159,17 @@ FileEngine uses the following engine specific options:
- `mask` The mask used for created files
- `path` Path to where cachefiles should be saved. Defaults to system's temp dir.

### ApcuEngine Options

ApcuEngine does not have any engine specific options. It requires the
[APCu](https://php.net/apcu) extension to be installed and enabled.

Because APCu stores values in the local webserver process shared memory, it is
best suited for data that can be regenerated and does not need to be shared
between servers. When clearing cache data, ApcuEngine removes entries matching
the cache configuration's `prefix`, so use unique prefixes for each cache
configuration that uses APCu.

<a id="caching-redisengine"></a>

### RedisEngine Options
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