[Question] How to cache in CI with hardlinks-global

[belgattitude]

Hey I did a few benchmarks using a matrix of different yarn options.

https://gist.github.com/belgattitude/0ecd26155b47e7be1be6163ecfbb0f0b

I spotted a noticeable difference in speed when using hardlinks-global.

Command	Mean [s]	Min [s]	Max [s]	Relative
YARN_COMPRESSION_LEVEL=mixed YARN_NM_MODE=hardlinks-global yarn install	15.823 ± 0.179	15.653	16.118	1.00

Versus

Command	Mean [s]	Min [s]	Max [s]	Relative
YARN_COMPRESSION_LEVEL=mixed yarn install	22.201 ± 0.121	22.035	22.334	1.00

I haven't totally understood the concept of global content addressable storage.

My question, is it possible to take advantage of this speedup on the CI. I tried but I don't know what folder to add to the action/cache.

Thanks in advance.

PS:

• the current install action https://github.com/belgattitude/nextjs-monorepo-example/blob/main/.github/actions/yarn-nm-install/action.yml
• the attempt with hardlinks: ci: install with hardlinks-global (don't merge) belgattitude/nextjs-monorepo-example#2727

[belgattitude]

Found out. Tried to get a ci speed up but wasn't giving expected results. While the install was faster by caching the store, the speedup is defeated by (un-)compressing the cache (action/cache)