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Fix incredibly slow back pagination query #1178
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If a client didn't specify a from token when paginating backwards synapse would attempt to query the (global) maximum topological token. This a) doesn't make much sense since they're room specific and b) there are no indices that lets postgres do this efficiently.
erikjohnston
changed the title
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LGTM |
NegativeMjark
approved these changes
Oct 24, 2016
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If a client didn't specify a from token when paginating backwards
synapse would attempt to query the (global) maximum topological token.
This a) doesn't make much sense since they're room specific and b) there
are no indices that lets postgres do this efficiently.