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10 Commits

Author SHA1 Message Date
tidwall 46927b476f Better TEST tests 2022-09-27 08:18:17 -07:00
tidwall 2c643996e7 Immutable Object type 2022-09-20 14:20:53 -07:00
tidwall 1177bbb80c Moved root collection keys into generic btree. 
Also updated the background expires logic to remove an extra
allocation.
 2022-09-13 08:16:41 -07:00
Benjamin Ramser bc62edb692 feat: add sector 2021-09-05 11:48:34 +02:00
tidwall 9e68703841 Update expiration logic 
This commit changes the logic for managing the expiration of
objects in the database.

Before: There was a server-wide hashmap that stored the
collection key, id, and expiration timestamp for all objects
that had a TTL. The hashmap was occasionally probed at 20
random positions, looking for objects that have expired. Those
expired objects were immediately deleted, and if there was 5
or more objects deleted, then the probe happened again, with
no delay. If the number of objects was less than 5 then the
there was a 1/10th of a second delay before the next probe.

Now: Rather than a server-wide hashmap, each collection has
its own ordered priority queue that stores objects with TTLs.
Rather than probing, there is a background routine that
executes every 1/10th of a second, which pops the expired
objects from the collection queues, and deletes them.

The collection/queue method is a more stable approach than
the hashmap/probing method. With probing, we can run into
major cache misses for some cases where there is wide
TTL duration, such as in the hours or days. This may cause
the system to occasionally fall behind, leaving should-be
expired objects in memory. Using a queue, there is no
cache misses, all objects that should be expired will be
right away, regardless of the TTL durations.

Fixes #616
 2021-07-12 13:37:50 -07:00
tidwall 6b08f7fa9e Code cleanup 
- Removed unused functions and variables
- Wrapped client formatted errors
- Updated deprecated packages
- Changed suggested code patterns
 2021-03-31 08:13:44 -07:00
tidwall 951fc58e02 Match geometry indexing to server config 2020-03-25 15:35:31 -07:00
Alex Roitman d0ca579f5c Add area expressions. 
Add parser.
Hook up to test command.
Add tests for expressions in test command.
 2019-06-10 14:47:42 -07:00
tidwall fb7259b10b Changed clip errors and json result type 2019-02-12 05:33:20 -07:00
Alex Roitman c849ab19ac Implement test command 2019-02-08 13:57:29 -08:00