4 ms·

The free plan says it includes "5,000 function invocations / project" I presume that's per month, not just 5000 free then pay up? How does this compare to hos

• dillonnys 3y ago
  Per project, per month, yes. Felt like a mouthful to write, but I'll make that more clear. Celest's biggest strength with cloud functions is its integration with the Dart language. The CLI generates a strongly-typed API client for you which matches the declaration of your function, and handles all serialization out-of-the-box. So, if you write a top-level Dart function like this // In `celest/functions/my_api.dart` Future<String> sayHello(String name) async => 'Hello, name!'; and save the file, you'll get a Flutter client which you can call as celest.functions.myApi.sayHello(name: 'Celest'); // Hello, Celest You can pass just about any Dart class between the frontend and backend, and it will just work. We're going for an RPC-style interface which means your types/parameters can never get out of sync.
  • gresrun 3y ago
    How do you handle versioning? Are there any guidelines/rules one must abide by? It looks like you using Flutter's Dart<=>JSON serialization; do you recommend using built_value for immutable data structures? Do you support protobuf/cap'n'proto?
    • dillonnys 3y ago
      > How do you handle versioning? Are there any guidelines/rules one must abide by? Versioning is not fully fleshed out yet, but we have an open issue for it here: https://github.com/celest-dev/celest/issues/4 https://github.com/celest-dev/celest/issues/4 It's a problem I want to tackle correctly, so that you'd need to put as little thought into it as possible. It should "just work". Vercel's skew protection [1] stands out as a recent example of doing this well. > It looks like you using Flutter's Dart<=>JSON serialization; do you recommend using built_value for immutable data structures? JSON was chosen as the primary serialization format for the reasons mentioned here [2]. Primarily, familiarity to Flutter developers, availability of JSON-compatible types in the wild, and integration with non-Dart clients. The JSON structure is outlined here (working on a full spec): https://celest.dev/docs/functions/http-requests https://celest.dev/docs/functions/http-requests built_value types can be used in Celest currently by giving the class `fromJson`/`toJson` methods. I haven't implemented auto-serialization for them, yet, but it should be straightforward. I've used built_value heavily in the past and agree there's no better alternative for some use cases. > Do you support protobuf/cap'n'proto? In the future, I plan to support more serialization formats, including protobuf and binary protocols. I will check out cap'n'proto, it was not yet on my radar. [1] https://vercel.com/docs/deployments/skew-protection https://vercel.com/docs/deployments/skew-protection [2] https://x.com/dillonthedev/status/1749806407510381054 https://x.com/dillonthedev/status/1749806407510381054