Show HN: FlakeHub Cache: Fast, secure, configurable. A new take on Nix caching

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  • cachix

    Command line client for Nix binary cache hosting:

    I've been trying to gradually introduce Nix more into my development.[0]

    One roadblock I haven't been able to overcome is integrating Nix in CI. In my case, I use CircleCI. I know there are Nix-centric CI platforms, but I've invested a lot into CircleCI and would like to stay.

    The problem I hit is that if I switch from something like a sqlfluff Docker container to a Nix Docker container, my build job goes from 15s to 2m+ because now I have to download several gigs within the CI job and build my Nix environment from scratch.[1]

    I tried Cachix, but the best I could get was bringing the job down to 55s (a roughly 3x performance penalty from an off-the-shelf Docker container).[2]

    How does FlakeHub Cache's performance in CI compare to the default Nux cache or to Cachix?

    [0] https://mtlynch.io/notes/nix-dev-environment/

    [1] https://github.com/cachix/cachix/issues/579

    [2] https://github.com/cachix/cachix/issues/579#issuecomment-175...

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

    InfluxDB logo
  • cachix-action

    Build software only once and put it in a global cache

    * https://github.com/cachix/cachix-action uploads whatever Nix builds to Cachix in the background so from this point on if any of our devs pulls the latest code, they don't have to build any derivations locally, and lose time waiting, everything is pulled automatically from Cachix to their machines, they can get right to work. Or if I have to purge the Cache Volume for some reason, nothing needs to be rebuilt, just pulled from Cachix.

    It's taken a few years to get this dialed in, but now that it works, it's sooo good!

  • magic-nix-cache-action

    Save 30-50%+ of CI time without any effort or cost. Use Magic Nix Cache, a totally free and zero-configuration binary cache for Nix on GitHub Actions.

    I'd be quite curious to see how using the Magic Nix Cache Action compares to your setup in terms of performance: https://github.com/DeterminateSystems/magic-nix-cache-action

    (full disclosure: Determinate Systems employee)

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