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-rw-r--r--user_guide_src/source/libraries/sessions.rst10
1 files changed, 6 insertions, 4 deletions
diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst
index 36b5415ac..3ca5aad17 100644
--- a/user_guide_src/source/libraries/sessions.rst
+++ b/user_guide_src/source/libraries/sessions.rst
@@ -581,10 +581,12 @@ also do the following, after creating the table::
ALTER TABLE ci_sessions ADD CONSTRAINT ci_sessions_id_ip UNIQUE (session_id, ip_address);
.. important:: Only MySQL and PostgreSQL databases are officially
- supported, due to lack of locking mechanisms on other platforms.
- Using sessions without locks can cause all sorts of problems,
- especially with heavy usage of AJAX, and we will not support
- such cases.
+ supported, due to lack of advisory locking mechanisms on other
+ platforms. Using sessions without locks can cause all sorts of
+ problems, especially with heavy usage of AJAX, and we will not
+ support such cases. Use ``session_write_close()`` after you've
+ done processing session data if you're having performance
+ issues.
Redis Driver
------------