Reuse compression buffer

[ash2k]

Use case(s) - what problem will this feature solve?

gRPC's compression code allocates a bytes.Buffer for each sent message. This code is responsible for 25% of RAM allocations in my program.

grpc-go/rpc_util.go

Line 658 in d41b01d

cbuf := &bytes.Buffer{}

Proposed Solution

Reuse bytes.Buffer using a sync.Pool.

Alternatives Considered

Additional Context