diff options
Diffstat (limited to 'docs/topics')
| -rw-r--r-- | docs/topics/http/sessions.txt | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/docs/topics/http/sessions.txt b/docs/topics/http/sessions.txt index 4f635f1704..d799c245de 100644 --- a/docs/topics/http/sessions.txt +++ b/docs/topics/http/sessions.txt @@ -76,9 +76,17 @@ Once your cache is configured, you have to choose between a database-backed cache or a non-persistent cache. The cached database backend (``cached_db``) uses a write-through cache -- -session writes are applied to both the cache and the database. Session reads -use the cache, or the database if the data has been evicted from the cache. To -use this backend, set :setting:`SESSION_ENGINE` to +session writes are applied to both the database and cache, in that order. If +writing to the cache fails, the exception is handled and logged via the +:ref:`sessions logger <django-contrib-sessions-logger>`, to avoid failing an +otherwise successful write operation. + +.. versionchanged:: 5.1 + + Handling and logging of exceptions when writing to the cache was added. + +Session reads use the cache, or the database if the data has been evicted from +the cache. To use this backend, set :setting:`SESSION_ENGINE` to ``"django.contrib.sessions.backends.cached_db"``, and follow the configuration instructions for the `using database-backed sessions`_. |