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tornado: Fill the message memcached in a child process.

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(imported from commit 3a7b4c0f4aad37319f4cfa7892709e99883f6a87)
This commit is contained in:
Tim Abbott
2013-01-14 11:51:18 -05:00
parent bea03548c2
commit 47b2b1cb1c
3 changed files with 23 additions and 4 deletions
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7
zephyr/lib/message_cache.py
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@@ -1,6 +1,8 @@
from zephyr.models import Message
from zephyr.lib.cache import cache_with_key, djcache
MESSAGE_CACHE_SIZE = 25000
def message_cache_key(message_id):
return "message:%d" % (message_id,)
@@ -12,11 +14,12 @@ def cache_get_message(message_id):
return Message.objects.select_related("client", "sender").get(id=message_id)
# Called on Tornado startup to ensure our message cache isn't empty
def populate_message_cache(count):
def populate_message_cache():
max_message_id = 0
min_message_id = 0
messages_for_memcached = {}
for m in Message.objects.select_related("sender", "client").all().order_by("-id")[0:count]:
for m in Message.objects.select_related("sender", "client").all().order_by(
"-id")[0:MESSAGE_CACHE_SIZE]:
max_message_id = max(m.id, max_message_id)
min_message_id = min(m.id, min_message_id)
messages_for_memcached[message_cache_key(m.id)] = (m,)