Add special case for LatestValueCache on broadcast receivers #310
Description
What's needed?
Broadcast channels already store the latest value on the channel, for use with the resend_latest feature.
Now that the LatestValueCache implementation is in the channels repo, it can check if a receiver is a broadcast receiver, and if so, use the broadcast channel's internal cache.
And continue to use the existing approach for other kinds of receivers.
This would improve the performance of the LatestValueCache, by eliminating the need for a task that continuously waits on a receiver for the next message.
Proposed solution
No response
Use cases
No response
Alternatives and workarounds
No response
Additional context
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