Implementing SignalR for Real-Time Notifications with Offline Fallback
I'm exploring how to implement SignalR for push notifications and evaluating two connection management strategies:
1. In-memory tracking with ConcurrentDictionary – Simple but does not persist connections if the server restarts.
2. Storing connections in Redis or a database – More scalable and persistent, suitable for future growth.
My Requirements:
User Base: 100–200 users (with potential growth).
Performance: Notifications should be delivered instantly.
Offline Handling: If the app is closed, fallback to Firebase Cloud Messaging (FCM).
Self-Hosting: I want to self-host SignalR and am open to exploring both self-hosted SignalR with Kestrel and SignalR with a reverse proxy like Nginx or Apache instead of using Azure SignalR Service.
I need reliable resources or guidance to implement this effectively. I have searched online but want to ensure I don’t miss anything. Any recommendations?
22 Replies
That user base should be perfectly fine to handle with a single server
In that case you can use an in-memory tracked approach
If you need to scale out, you can look for something called "SignalR Backplane"
Ok got it also How hard is to implement this backplane thing?
Not too difficult to be honest
Ok, Also you got any good resource on this?
I like to use this one myself https://masstransit.io/documentation/configuration/integrations/signalr
SignalR
MassTransit offers a package which provides an easy option to get a SignalR Backplane up and running in with just a few lines of configuration. We won't go over the concept of a SignalR Backplane, more details can be found out about it here. This page is old, and references the .NET Framework SignalR, but the concepts of scale out are the same f...
Which is super easy to set up
Unknown User•2w ago
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If user lose connection with signal r that means I need to use service like fire base to give them notifications otherwise if they are using app and connected i will switch to signal r this is my main idea..
Unknown User•2w ago
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I hope everything workout fine will implement it first time little bit scared because first time working on live project 💀
Unknown User•2w ago
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I need that :Ok:
Unknown User•2w ago
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So I need to use my own timeout?
Unknown User•2w ago
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Creating backend for application that fire up notification when new visitor get registered by security guard, if user grant permission we will let that visitor in otherwise not
Unknown User•2w ago
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Ok
So for ack I think I need to use my own logic I don't think signal r provide that
Unknown User•2w ago
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Ok
Unknown User•2w ago
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I am going for sleep now it's night time here let's discuss tomorrow thanks for help good night
Have a great day/night:Ok: