grpc-go
                                
                                
                                
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                        stream: allow codecs to reuse output buffers
This would require a codec API change/extension to recycle the memory once grpc is done writing it to the wire (or compressing it).
The PR that implemented this ultimately needed to be rolled back (#3307); this should have been reopened at that time.
There's another attempt to reuse the buffer for reads, but the team didn't have time to review the PR (https://github.com/grpc/grpc-go/pull/3220#issuecomment-608655702). Future performance work may reopen it, or reuse some of the change.
Bring tags over to #6619 and close this down.