Tomas Drabek 524ca1a676 DefaultSubscriptionRegistry: Reduced thread contention ...

* DestinationCache is now synchronized on multiple 'destination' locks
 (previously a single shared lock)
* DestinationCache keeps destinations without any subscriptions
 (previously such destinations were recomputed over and over)
* SessionSubscriptionRegistry is now a
 'sessionId -> subscriptionId -> (destination,selector)' map
 for faster lookups
 (previously 'sessionId -> destination -> set of (subscriptionId,selector)')

closes gh-24395

2020-07-16 17:28:32 +03:00

1.5 KiB

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