github.com/klauspost/compress/zstd is a native Go implementation of Zstandard, with an API that leaks memory and goroutines if you don't call Close()
on every Encoder
and Decoder
that you create, and Decoders
cannot be reused after they are closed.
zstdpool-syncpool is a Go wrapper for github.com/klauspost/compress/zstd and sync.Pool, which automatically frees resources if you forget to call Close()
and/or when items are dropped from the sync.Pool.
Background: https://github.com/klauspost/compress/issues/264
import ( "github.com/klauspost/compress/zstd" syncpool "github.com/mostynb/zstdpool-syncpool" ) // Create a sync.Pool which returns wrapped *zstd.Decoder's. decoderPool := syncpool.NewDecoderPool(zstd.WithDecoderConcurrency(1)) // Get a DecoderWrapper and use it. decoder := decoderPool.Get().(*syncpool.DecoderWrapper) decoder.Reset(compressedDataReader) _, err = io.Copy(uncompressedDataWriter, decoder) // Return the decoder to the pool. If we forget this, then the zstd.Decoder // won't leak resources. decoderPool.Put(decoder) // Create a sync.Pool which returns wrapped *zstd.Endoder's. encoderPool := syncpool.NewEncoderPool(zstd.WithEncoderConcurrency(1)) // Get an EncoderWrapper and use it. encoder := encoderPool.Get().(*syncpool.EncoderWrapper) encoder.Reset(compressedDataWriter) _, err = io.Copy(encoder, uncompressedDataReader) // Return the encoder to the pool. If we forget this, then the zstd.Encoder // won't leak resources. encoderPool.Put(encoder)
Bug reports, feature requests, PRs welcome.
Licensed under the Apache License, Version 2.0. See the LICENSE file.