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| author | Erik Johnston <erik@matrix.org> | 2017-05-17 14:31:23 +0100 |
|---|---|---|
| committer | Erik Johnston <erik@matrix.org> | 2017-05-17 15:12:15 +0100 |
| commit | bbfe4e996c9b9729f19d5b104dc6abfe120531b4 (patch) | |
| tree | 899deacf0159b07f84271abdb58c6ca4b02677c6 /UPGRADE.rst | |
| parent | Merge branch 'release-v0.21.0' of github.com:matrix-org/synapse into develop (diff) | |
| download | synapse-bbfe4e996c9b9729f19d5b104dc6abfe120531b4.tar.xz | |
Make get_state_groups_from_groups faster.
Most of the time was spent copying a dict to filter out sentinel values that indicated that keys did not exist in the dict. The sentinel values were added to ensure that we cached the non-existence of keys. By updating DictionaryCache to keep track of which keys were known to not exist itself we can remove a dictionary copy.
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