urql VS Rx.NET

urql (8k ⭐) -> A highly customizable and versatile GraphQL client with which you add on features like normalized caching as you grow.

Eh, https://github.com/urql-graphql/urql is considered the improved re-architected project that doesn't contain the legacy baggage from the beginning of GraphQL like Apollo does.

urql docs

Even though I think this solution is not too bad, I wish @urql/svelte would implement a better way to handle SSR with sveltekit. I posted a question on the urql GitHub discussions board, but I have not gotten any response yet.

I want to share my approach to handling errors in GraphQL resolvers (I use GraphQL Yoga on the server-side) and pass them to the frontend side (where I use Svelte + @urql/svelte).

Repository

API client: urql

big thread on it here https://github.com/FormidableLabs/urql/issues/1819

Here is link number 1 - Previous text "way"

DynamicData is a .NET library that brings the power of reactive programming to collections. It is built upon the principles of Reactive Extensions (Rx), extending these concepts to handle collections like lists and observables more efficiently and flexibly. DynamicData provides a set of tools and extensions that enable developers to manage collections reactively, meaning any changes in the data are automatically and efficiently propagated through the application.

One of the greatest things i discovered recently, is Reactive programming / Reactive Extensions ( https://github.com/dotnet/reactive ).

https://github.com/dotnet/reactive has a lot of different time related extensions for "events". Maybe you'll find something for yourself, if you google for rate limiting with reactive.

Install Reactive Extensions: https://github.com/dotnet/reactive

Another option is to use the RxJava library in Java. This library uses reactive programming principles to make it easy to write asynchronous and event-driven code. It's particularly well-suited for handling streams of data and allows you to write code that is both efficient and easy to read.

I'd use a dedicated event bus based on Reactive Extensions or MediatR to publish domain events from your domain services. This probably doesn't solve all your ViewModel update problems as is, maybe you need to revise the granularity (maybe you can have smaller ViewModels that refresh single property that exposes the Model) and lifespan (sometimes you can create a ViewModel, make it perform it's task and then discard it completely) of your ViewModels.

If you're finding yourself in a situation where you need to turn this behavior into a pattern because there are a lot of View Models that need to execute async business logic in response to some changes, I'd go with something like MediatR or Reactive Extensions. The idea is, again, that some other, probably business-level, component listens to changes in a decoupled way (that means it doesn't subscribe directly to your View Model, but to an event bus instead). View Model publishes change events to the event bus, and business-component reacts to these events by executing the business logic.