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A comment on Why are tar.xz files 15x smaller when using Python's tar compared to macOS tar?. Parent comment

Re:Why are tar.xz files 15x smaller when using Python's tar ... by luckystarr on Monday March 15, 2021 @04:20AM (#26463627)
The tradeoff you show between compression ratio and compression speed is a misleading one.

The slow compression speed only takes place once (when compressing), while the saved bandwidth due to a better compression ratio is saved continuously.

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Re:Why are tar.xz files 15x smaller when using Python's tar ... by OskarS on Monday March 15, 2021 @04:33AM (#26463683)
Not if you're serving things dynamically from a web server, then it happens on the fly, every request.
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Re:Why are tar.xz files 15x smaller when using Python's tar ... by luckystarr on Monday March 15, 2021 @05:54AM (#26464100)
True. But there you can go into optimizations like parallelization of the compression and building an optimized dictionary upfront once to make the process faster.
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Re:Why are tar.xz files 15x smaller when using Python's tar ... by pmarreck on Monday March 15, 2021 @10:56AM (#26466753)
Cache by the ETag and/or If-Modified-Since headers, then
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