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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ref/models/querysets.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt index 858371978a..7138cd0e74 100644 --- a/docs/ref/models/querysets.txt +++ b/docs/ref/models/querysets.txt @@ -1456,6 +1456,16 @@ evaluated will force it to evaluate again, repeating the query. Also, use of ``iterator()`` causes previous ``prefetch_related()`` calls to be ignored since these two optimizations do not make sense together. +.. warning:: + + Some Python database drivers like ``psycopg2`` perform caching if using + client side cursors (instantiated with ``connection.cursor()`` and what + Django's ORM uses). Using ``iterator()`` does not affect caching at the + database driver level. To disable this caching, look at `server side + cursors`_. + +.. _server side cursors: http://initd.org/psycopg/docs/usage.html#server-side-cursors + latest ~~~~~~ |