Nginx Nginx config suggestions

rdan · Nov 4, 2018

Asper this article: Results of experimenting with Brotli for dynamic web content

Clearly, the compression possible by Brotli is significant. On average, Brotli at the maximal quality setting produces 1.19X smaller results than zlib at the maximal quality. For files smaller than 1KB the result is 1.38X smaller on average, a very impressive improvement, that can probably be attributed to the use of static dictionary.
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On average for all files, we can see that Brotli at quality level 4 is slightly faster than zlib at quality level 8 (and 9) while having comparable compression ratio. However that is misleading. Most files are smaller than 64KB, and if we look only at those files then Brotli 4 is actually 1.48X slower than zlib level 8!
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Those numbers are quite low, due to the slow speed of Brotli. To get any speedup we really want to see those numbers being greater than the connection speed. It seems that for files greater than 64KB, Brotli at quality setting 5 can speed up slow connections.
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The way I see it, Brotli already has an advantage over zlib for large files (larger than 64KB) on slow connections.
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I think it's better to follow Cloudflare
Code:
#For Brotli
brotli_min_length 64000;
brotli_comp_level 5;

#For nginx.conf
gzip_comp_level 8; # Only when using Cloudflare Zlib

eva2000 · Nov 4, 2018

rdan said: ↑

brotli_min_length 64000;
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indeed that does make more sense

going to change it to brotli_min_length 65536; when centminmod 123.09beta01 updated version does nginx centmin.sh menu option 4 recompiles

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rdan Well-Known Member

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rdan Well-Known Member

eva2000 Administrator Staff Member

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