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MatrixSynapse/changelog.d/8752.misc

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Cache event ID to auth event IDs lookups (#8752) This should hopefully speed up `get_auth_chain_difference` a bit in the case of repeated state res on the same rooms. `get_auth_chain_difference` does a breadth first walk of the auth graphs by repeatedly looking up events' auth events. Different state resolutions on the same room will end up doing a lot of the same event to auth events lookups, so by caching them we should speed things up in cases of repeated state resolutions on the same room.
2020-11-13 12:29:18 +01:00
Speed up repeated state resolutions on the same room by caching event ID to auth event ID lookups.