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authorKlaus Post <klauspost@gmail.com>2021-06-18 10:49:49 -0700
committerGitHub <noreply@github.com>2021-06-18 11:49:49 -0600
commit69c914483d448cae05ebc4b658a331682532d3d3 (patch)
treed3e62d7f9e2d1fa2d2a4ab9b83d54c6b8fedd443 /modules/caddyhttp/encode/zstd
parent9d4ed3a3236df06e54c80c4f6633b66d68ad3673 (diff)
encode: Tweak compression settings (#4215)
* Tweak compression settings zstd: Limit window sizes to 128K to keep memory in control both server and client size. zstd: Write 0 length frames. This may be needed for compatibility. zstd: Create fewer encoders. Small memory improvement. gzip: Allow -2 (Huffman only) and -3 (stateless) compression modes. * Update modules/caddyhttp/encode/zstd/zstd.go Update docs. Co-authored-by: Francis Lavoie <lavofr@gmail.com> Co-authored-by: Francis Lavoie <lavofr@gmail.com>
Diffstat (limited to 'modules/caddyhttp/encode/zstd')
-rw-r--r--modules/caddyhttp/encode/zstd/zstd.go5
1 files changed, 4 insertions, 1 deletions
diff --git a/modules/caddyhttp/encode/zstd/zstd.go b/modules/caddyhttp/encode/zstd/zstd.go
index 5182fc4..d2a638c 100644
--- a/modules/caddyhttp/encode/zstd/zstd.go
+++ b/modules/caddyhttp/encode/zstd/zstd.go
@@ -47,7 +47,10 @@ func (Zstd) AcceptEncoding() string { return "zstd" }
// NewEncoder returns a new gzip writer.
func (z Zstd) NewEncoder() encode.Encoder {
- writer, _ := zstd.NewWriter(nil)
+ // The default of 8MB for the window is
+ // too large for many clients, so we limit
+ // it to 128K to lighten their load.
+ writer, _ := zstd.NewWriter(nil, zstd.WithWindowSize(128<<10), zstd.WithEncoderConcurrency(1), zstd.WithZeroFrames(true))
return writer
}