Erik Johnston 4cb00d297f
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 11:29:18 +00:00
..
2020-11-06 11:42:07 +00:00
2020-10-30 15:27:58 +00:00
2020-09-04 06:54:56 -04:00