benkimpel
How does mix handle partial dependency caching? (CircleCI)
CircleCI provides partial dependency caching by allowing their cache keys to match from specific to general. Let’s say most specific being a checksum of mix.lock and least specific being a branch name.
If it does not have a cache for the current mix.lock, but does have one for the branch then the restored dependencies will be partial. Does mix deps.get handle this gracefully or will it re-fetch everything?
Same question if we apply the strategy to the _build directory.
Thanks!
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benwilson512
In my experience on Circle CI this works just fine. Here are my caching keys:
- v1-build-cache-{{ .Branch }}-{{ checksum "mix.lock" }}
- v1-build-cache-{{ .Branch }}
- v1-build-cache
The v1 bit is just a handy thing to increment incase you want to intentionally blow away the cache. I haven’t had to do that often.
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