actions/cache is much slower on Windows

Hi,

I’m not sure if this is a known issue, or I’m doing something wrong, but this action runs much much slower on windows runners for me. I tried finding issues related to this, but couldn’t find any.

This is not terribly important, but it does force me to wait about four minutes longer for mi CI to run.

You can see this in action here:

• Cache miss: https://github.com/nomiclabs/buidler/runs/722156275
• Cache hit: https://github.com/nomiclabs/buidler/runs/722195141

Note that there are non-windows jobs, where actions/cache run much faster.

btw, thanks for releasing v2. It’s a HUGE improvement.

[dhadka]

@flybayer We ended up using the Azure Storage SDK for NodeJS instead of Azcopy. This was primarily done so we have better control over versioning and will also work out-of-the-box for self-hosted runners. This change is merged in toolkit/cache (see https://github.com/actions/toolkit/pull/497 and https://github.com/actions/toolkit/pull/497) and has been published to NPM. The last step is updating the version used by the cache action (see https://github.com/actions/cache/pull/375) and updating the release tag.

[dhadka]

actions/cache@v2.1.0 is published. Sorry for the delay getting this out, I found a bug in the version after posting above and had to push out a fix.

You can see performance comparison on a 2.5 GB cache file - https://github.com/dhadka/cache-canary/runs/895195362?check_suite_focus=true

Windows is still slightly slower than Ubuntu and Mac at 97 seconds, but this should be a substantial improvement compared to the 4 minutes needed to download the 818 MB cache that started this issue.