Consider faster and better packing alternative for tar

[miohtama]

Though tar + gzip is well-known through UNIX world, there are now compression algorithms that will decompress faster on multi CPU environments. For example Zstandard might be a good fit for NPM caching over tar.

Just throwing a feature idea here, I do not know if there is enough demand for better and faster compression as a feature.

https://engineering.fb.com/core-data/smaller-and-faster-data-compression-with-zstandard/

[miohtama]

Looks like Github actions already provides this as a library:

https://github.com/actions/cache

[agilgur5]

Yes, this library uses @actions/cache under-the-hood (more specifically https://github.com/actions/toolkit/blob/master/packages/cache as of #37), so that'd be the place upstream to suggest compression alternatives