Azure Serverless Function persistence of members with the Azure SignalR Service?

Harry Ridpath 1

Does an Azure Serverless Function allow internal members to be persisted and load balanced with the Azure SignalR Service?

For example:

I have created a class that inherits the IGroupManager interface from Microsoft.AspNetCore.SignalR. I have not found any documentation as to how the SignalR Service load balance the connections. So I am assuming that there is a process for duplicating and updating Groups across the servers that are handling the load balancing.

If that is the case then, will my new class object also be maintained in the same manner being that it inherits the IGroupManager?

I do have to new() up the class in the SeverlessHub class.

Any insights on this will be greatly appreciated.

SnehaAgrawal-MSFT 21,506 Reputation points

2022-10-20T08:47:40.227+00:00

Thanks for reaching here! Could you please help us here understanding better on this, The group info persist on SignalR Service rather than IGroupManager. The IGroupManager only responsible for sending "SendToGroup" messages to the service, and service will find out how many client connections are in the group.
Harry Ridpath 1 Reputation point

2022-10-20T14:01:52.43+00:00

My main curiosity is, when using Azure functions as a SignalR ServerlessHub, is an instance of this ServerlessHub copied and invoked on the Azure SignalR Service?
SnehaAgrawal-MSFT 21,506 Reputation points

2022-10-25T07:57:03.73+00:00

Thanks for reply! Could you please explain what does "copied" means. ServerlessHub just invoke SignalR Service with "output binding" and doesn't store connection info locally.
Harry Ridpath 1 Reputation point

2022-10-25T13:38:36.13+00:00

Does the SignalR Azure Function execute inside of the SignalR service or does the service only maintain the Groups collection?

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Azure Serverless Function persistence of members with the Azure SignalR Service?

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