Services/Sync/Server/Notes/QuotaAlgo: Difference between revisions

Services/Sync/Server/Notes/QuotaAlgo (view source)

17 bytes added , 8 July 2010

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canmove, Confirmed users

1,173

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 On a write
- - If a user has no quota entry, grab the list from the database and put it into memcache along with the current timestamp
+# If a user has no quota entry, grab the list from the database and put it into memcache along with the current timestamp
- - get current total and associated timestamp
+# get current total and associated timestamp
- - if total > low_threshold and timestamp is older than 1h - refetch total from db and reset total and timestamp in memcache
+# if total > low_threshold and timestamp is older than 1h - refetch total from db and reset total and timestamp in memcache
- - if total > quota, reject write
+# if total > quota, reject write
- - write data
+# write data
- - add sum of incoming payloads to quota
+# add sum of incoming payloads to quota
- - if total > low_threshold, add an X-Weave header
+# if total > low_threshold, add an X-Weave header
 On a delete
- - delete data
+# delete data
- - delete user quota record from memcache
+# delete user quota record from memcache
 add /info/collection_usage (requires version bump to 1.1)
- - get grouped collection totals
+# get grouped collection totals
- - write overall total to memcache
+# sum them and write overall total (and timestamp) to memcache
 monitoring script
- - when user total is calculated, update memcache (may be firewall issues here)
+# when user total is calculated, update memcache (may be firewall issues here)