Optimize gzip compression of responses (#15416)

It looks like maintainers aren't very active on the repo and https://github.com/nytimes/gziphandler/pull/107 has come to a standstill. I don't want to wait forever for this to go in. Let's use a replace directive to point to the fork. When the PR gets merged, we can just bump the dependency and remove the replace directive. Re: the PR, copying the text from the PR description This gives 40-50% improvements in CPU with very minor increase in memory, just as a drop-in replacement. I think that is a very reasonable tradeoff. The library is mature and safe to be used in production. ``` name old time/op new time/op delta GzipHandler_S2k-8 74.9µs ± 2% 34.4µs ± 2% -54.07% (p=0.000 n=10+9) GzipHandler_S20k-8 379µs ± 1% 226µs ± 3% -40.42% (p=0.000 n=9+10) GzipHandler_S100k-8 1.95ms ± 2% 1.15ms ± 1% -41.27% (p=0.000 n=9+9) GzipHandler_P2k-8 24.3µs ±25% 10.7µs ±25% -55.80% (p=0.000 n=10+10) GzipHandler_P20k-8 132µs ± 2% 75µs ± 1% -42.95% (p=0.000 n=9+10) GzipHandler_P100k-8 658µs ± 2% 371µs ± 3% -43.68% (p=0.000 n=9+10) name old alloc/op new alloc/op delta GzipHandler_S2k-8 7.71kB ± 5% 9.13kB ± 7% +18.33% (p=0.000 n=10+10) GzipHandler_S20k-8 65.1kB ± 3% 70.3kB ± 3% +8.05% (p=0.000 n=10+10) GzipHandler_S100k-8 348kB ± 4% 382kB ± 2% +9.85% (p=0.000 n=10+10) GzipHandler_P2k-8 7.60kB ± 1% 7.93kB ± 2% +4.33% (p=0.000 n=10+10) GzipHandler_P20k-8 64.4kB ± 1% 66.3kB ± 2% +2.92% (p=0.000 n=10+10) GzipHandler_P100k-8 304kB ± 1% 309kB ± 1% +1.67% (p=0.000 n=10+9) name old allocs/op new allocs/op delta GzipHandler_S2k-8 21.0 ± 0% 21.0 ± 0% ~ (all equal) GzipHandler_S20k-8 24.0 ± 0% 24.0 ± 0% ~ (all equal) GzipHandler_S100k-8 27.0 ± 0% 27.0 ± 0% ~ (all equal) GzipHandler_P2k-8 21.0 ± 0% 21.0 ± 0% ~ (all equal) GzipHandler_P20k-8 24.0 ± 0% 24.0 ± 0% ~ (all equal) GzipHandler_P100k-8 26.0 ± 0% 26.0 ± 0% ~ (all equal) ``` https://mattermost.atlassian.net/browse/MM-28491
2020-09-10 09:02:20 +05:30
--- a/go.sum
+++ b/go.sum
@@ -26,8 +26,6 @@ github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF0
 github.com/Masterminds/squirrel v1.4.0 h1:he5i/EXixZxrBUWcxzDYMiju9WZ3ld/l7QBNuo/eN3w=
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 github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA=
-github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
-github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PaulARoy/azurestoragecache v0.0.0-20170906084534-3c249a3ba788/go.mod h1:lY1dZd8HBzJ10eqKERHn3CU59tfhzcAVb2c0ZhIWSOk=
 github.com/RoaringBitmap/roaring v0.4.21 h1:WJ/zIlNX4wQZ9x8Ey33O1UaD9TCTakYsdLFSBcTwH+8=
@@ -39,6 +37,8 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
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+github.com/agnivade/gziphandler v1.1.2-0.20200815170021-7481835cb745 h1:K5MCP8PQt50Tqkcdtgg7jhYwo6VBJWMKUmgqbXdu7WE=
+github.com/agnivade/gziphandler v1.1.2-0.20200815170021-7481835cb745/go.mod h1:eRIEzSVYGdp3PyjpBJPBPMo4LSeFUlpPjByDCzMRrtw=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
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@@ -433,6 +433,8 @@ github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvW
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
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 github.com/klauspost/compress v1.9.0/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
+github.com/klauspost/compress v1.10.11 h1:K9z59aO18Aywg2b/WSgBaUX99mHy2BES18Cr5lBKZHk=
+github.com/klauspost/compress v1.10.11/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
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