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Add comment about sending presence updates

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(imported from commit da9c521a6ad652e4dbcaabcc3a24b3e23376f545)
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Steve Howell
2013-09-15 14:49:04 -04:00
parent 83e517fcf9
commit 1836d8958e
2 changed files with 9 additions and 4 deletions
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4
zerver/lib/cache.py
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@@ -260,9 +260,7 @@ def update_user_presence_cache(sender, **kwargs):
# For any status update, flush the user's realm's entry in the
# UserPresence cache to avoid giving out stale state. Since we
# get a lot of presence updates, we are likely to get cache misses
# when new messages come in, but the query is pretty quick, and we
# no longer have the issue of Tornado needing to go the cache or DB
# to get presence info.
# when new messages come in, but the query is pretty quick.
user_profile = kwargs['instance'].user_profile
djcache.delete(KEY_PREFIX + status_dict_cache_key(user_profile))