Polly VS RestEase

Polly

This is probably one of the most useful "cloud" patterns out there and it is fairly easy to implement. There are great articles and implementations, like Polly, already on the internet about this pattern so why another one?

Polly Documentation: Polly Official Site Circuit Breaker Design Pattern: Microsoft Learn Microservices Best Practices: Microservices on .NET

Custom HTTP handlers are well known as a mechanism to manage cross-cutting concerns around HTTP requests. The calling application has control over the HTTP handler pipeline, so it can be reconfigured, reordered, or even rebuilt from scratch. Decorating a client with a Token Management Handler or a custom Polly policy is easy... assuming the client accepts an HttpClient parameter in its constructor, and you haven't messed with the natural order of things by obstructing the client customization in some way (I really don't want to show how).

In our applications, we should wrap all requests to remote services in code that implements a retry policy that follows one of the strategies I listed earlier. If you are a .NET developer like myself, you may be familiar with the Polly library. Golang has a library called Retry, and there are numerous third-party libraries for Python and Java.

Another question that rises is, would it be better to use some HttpClient package to handle the requests, like Refit in combination with Polly. But then again, it seems Refit also uses the HttpClient factory, which was a bad thing according to the previous?

D'Oh! Sorry, not PolySharp. I meant Polly. Too many similarly-named libraries!

Everywhere I've worked with AGs, we've worked with the application team to add retry logic to help make things a bit more seamless to end users. There are libraries out there that can make this pretty easy - Polly is one that I've used a few times, but there are others.

Fallacy 1: The network is reliable. If system 2 works perfectly well, but is not accessible for service 1 due to network issues, service 2 is still unavailable. This is why timeouts, service breakers and retry policies exist. A great tool for .NET to handle common network issues is Polly, but even when using a tool like this, the network is still not completely reliable.

I see. Then I don't have any better idea right now, but I do want to suggest that if your script is mostly API calls and you want to be able to deal with failures then take a look at the polly library: https://github.com/App-vNext/Polly

dotnet add package RestEase (http client helper https://github.com/canton7/RestEase)

RestEase

If Swagger/OpenAPI is available, save yourself a lot of trouble and generate the client using OpenAPI Generator. If not, use a library like RestEase to make it significantly easier to create the client.

Use RestEase to create your own client library. Refit is a very similar and more popular library. IMO RestEase is an improvement over Refit and I prefer it, but either will solve your problems. Both are libs that have you build interfaces describing the API endpoints, then the library handles all the boilerplate code that calls HttpClient.

Not sure about RestSharp, but with RestEase this is handled by setting it on an HttpClientHandler - https://github.com/canton7/RestEase/discussions/195

Use RestEase to make a client.

I haven't tried this myself, but to take it a step further from just sharing request types you could try using RestEase.

Honorable mentions: RestEase, RESTFulSense

I use RestEase which is heavily inspired by Refit.