- `ezpublish.stash_cache.igbinary` enables you to use the `igbinary` library igbinary PHP extension to serialize objects stored in cache.
- Recommended enabled in most use cases.
- `ezpublish.stash_cache.lzf` enables you to use the `LZF` library LZF PHP extension to compress serialized objects stored in cache.
- Compression consumes some more CPU, scenario where it improves overall performance is when limited by redis memory and/or network bandwidth, with spare CPU capacity.
After changing these settings you need to clear cache and purge Redis content .