Temporary disable Zstd

README.md

@@ -4,7 +4,7 @@
 
 WAL-G is an archival restoration tool for Postgres.
 
-WAL-G is the successor of WAL-E with a number of key differences. WAL-G uses LZ4, LZMA, Zstd or Brotli compression, multiple processors and non-exclusive base backups for Postgres. More information on the design and implementation of WAL-G can be found on the Citus Data blog post ["Introducing WAL-G by Citus: Faster Disaster Recovery for Postgres"](https://www.citusdata.com/blog/2017/08/18/introducing-wal-g-faster-restores-for-postgres/).
+WAL-G is the successor of WAL-E with a number of key differences. WAL-G uses LZ4, LZMA or Brotli compression, multiple processors and non-exclusive base backups for Postgres. More information on the design and implementation of WAL-G can be found on the Citus Data blog post ["Introducing WAL-G by Citus: Faster Disaster Recovery for Postgres"](https://www.citusdata.com/blog/2017/08/18/introducing-wal-g-faster-restores-for-postgres/).
 
 **Table of Contents**
 - [Installation](#installation)
@@ -117,8 +117,8 @@ To configure GPG key for encryption and decryption. By default, no encryption is
 
 * `WALG_COMPRESSION_METHOD`
 
- To configure compression method used for backups. Possible options are: `lz4`, 'lzma', `zstd`, 'brotli'. Default method is `lz4`. LZ4 is the fastest method, but compression ratio is bad.
- LZMA is way much slower, however it compresses backups about 6 times better than LZ4. Zstd or Brotli is a good trade-off between speed and compression ratio which is about 3 times better than LZ4.
+ To configure compression method used for backups. Possible options are: `lz4`, 'lzma', 'brotli'. Default method is `lz4`. LZ4 is the fastest method, but compression ratio is bad.
+ LZMA is way much slower, however it compresses backups about 6 times better than LZ4. Brotli is a good trade-off between speed and compression ratio which is about 3 times better than LZ4.
 
  * `WALG_DISK_RATE_LIMIT`
 

compression.go

@@ -18,7 +18,7 @@ const (
 	LzoFileExtension    = "lzo"
 )
 
-var CompressingAlgorithms = []string{Lz4AlgorithmName, LzmaAlgorithmName, ZstdAlgorithmName, BrotliAlgorithmName}
+var CompressingAlgorithms = []string{Lz4AlgorithmName, LzmaAlgorithmName, BrotliAlgorithmName}
 
 type UnknownCompressionMethodError struct{}
 
@@ -40,7 +40,6 @@ var Compressors = map[string]Compressor{
 	Lz4AlgorithmName:    Lz4Compressor{},
 	LzmaAlgorithmName:   LzmaCompressor{},
 	BrotliAlgorithmName: BrotliCompressor{},
-	ZstdAlgorithmName:   ZstdCompressor{},
 }
 
 var Decompressors = []Decompressor{