pushpin VS Mercure

For realtime, I used Pushpin with Server Sent Events. (It supports WebSocket as well).

Instead of letting clients directly interface with your services over websockets, consider using Pushpin [1], which allows you to completely isolate realtime communication from your services.

As a bonus, it also provides you the ability to cycle (redeploy/restart) your services without your clients having to reconnect (that's where the name comes from). And as you can imagine - because communication with your services is entirely stateless it scales like crazy.

[1] https://pushpin.org/

Vapor[0] based on Swift. Advantage of this is that you don't have to evaluate multiple frameworks for Swift and suffer paralysis by analysis. All the Swift community is behind one framework.

The next is Actix[1] based on Rust. There are many frameworks in Rust and most of them have not reached 1.0 And which framework will survive becomes a question.

Other not so well-known is Wt[2] based on C++. This actually is created for programmers who are not web developers. The development experience is similar to desktop app development like Qt.

If that is not acceptable then Django[3], based on Python, is the one that will be good for you.

For the front-end I would recommend Flutter[4]. As much as I dislike getting tied to a single company for whom the framework is not their bread-and-butter, I don't see any other viable options to Flutter that will cover all web, mobile and desktop out of the box.

For databases, I would recommend BedrockDB[5], if you are not averse to SQLite. Or FoundationDB[6], if you want NoSQL. But if you are not concerned about horizontal scalability or okay with self-managing database availability, then PostgreSQL[7] is a very good option.

For push notifications, PushPin[8] is a good option.

[0] https://vapor.codes

[1] https://actix.rs

[2] https://webtoolkit.eu

[3] https://www.djangoproject.com

[4] https://flutter.dev

[5] https://bedrockdb.com

[6] https://www.foundationdb.org

[7] https://postgresql.org

[8] https://pushpin.org

There is also the option of running a proxy which handles the stateful nature of websockets (i.e. https://pushpin.org/), and then handle the rest in a stateless way with lambdas or similar.

This may not be what you are looking for, but why not use a combination of Postgres listen/notify and PushPin[0] to support push notifications?

[0] https://pushpin.org

Could use pushpin[1] and have several fallbacks, like SSE -> Websocket -> polling.

[1]https://pushpin.org/

Are you aware of things like websockets and mercure.rocks?

It could be implemented with STOMP, or Mercure (goes well with API-Platform, written in PHP/Symfony), you could write your own with the help of nchan and scale it via Redis. If it's a web service, the best practices for operating and scaling are well established, Godot then just becomes another client.

You can try https://mercure.rocks/.

It's worth looking at something like Mercure , which is used by API Platform

Pusher might be one of these systems, Mercure is another one (which you can host yourself). Mercure has good documentation and some examples in various languages, including PHP: https://mercure.rocks/docs/ecosystem/awesome#examples.

You can use Mercure https://mercure.rocks/ , Mercure uses http2.

I actually was thinking about this when I saw https://github.com/dunglas/mercure project to become a Caddy plugin. But I did not find enough reasoning to try this with Centrifugo at that point, and still... Seems awesome from one side - tight integration with a web-server, no extra network between LB and Centrifugo. But will this be useful in practice and find its users? 🤔 That's the question I don't have an answer yet.

Polling is kind of ok (data might change between poll events), but real-time updates are better. So If you don't mind adding an extra service, then take a look at mercure.

Two more questions: - Am I to understand The Guild now recommends GraphQL Yoga over Helix? - Could something like Mercure be included in the recipes ? (this would be a nice solution for serverless)