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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/topics/cache.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/topics/cache.txt b/docs/topics/cache.txt index 7bf9fcbbde..6ae1e1e376 100644 --- a/docs/topics/cache.txt +++ b/docs/topics/cache.txt @@ -195,6 +195,10 @@ In this example, the cache table's name is ``my_cache_table``:: } } +Unlike other cache backends, the database cache does not support automatic +culling of expired entries at the database level. Instead, expired cache +entries are culled each time ``add()``, ``set()``, or ``touch()`` is called. + Creating the cache table ~~~~~~~~~~~~~~~~~~~~~~~~ |