The latest articles on DEV Community by MetinAbaszade (@matinabaszada). https://dev.to/matinabaszada https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F1044883%2F2d019531-ac67-4efd-a36a-1e52c20bbf9b.jpeg https://dev.to/matinabaszada en MetinAbaszade Tue, 06 Aug 2024 06:50:50 +0000 https://dev.to/matinabaszada/how-to-manage-persistent-connections-in-a-whatsapp-like-chat-application-using-aspnet-signalr-and-ef-core-1nd8 https://dev.to/matinabaszada/how-to-manage-persistent-connections-in-a-whatsapp-like-chat-application-using-aspnet-signalr-and-ef-core-1nd8 <p>I'm currently developing a chat application similar to WhatsApp using C#, ASP.NET SignalR, and EF Core. My goal is to implement both group chats and one-to-one chats and store them in a database for persistence. However, I'm encountering an issue with managing user connections.</p> <p>Each time a user connects to the SignalR hub, a new ConnectionId is generated. This requires me to re-add the user to their respective groups and one-to-one chats with each refresh. Essentially, every time the user refreshes the page, they leave and then rejoin all their chats.</p> <p>Although I can store the ConnectionId in cache or in the database, it becomes useless because SignalR will always generate a new ConnectionId upon reconnection. I doubt that real-world applications handle connections this way, so I’m looking for guidance on how to manage this situation effectively.</p> <p>Here are my specific questions:</p> <p>How can I persist user connections across page refreshes and disconnections?<br> Is this issue specific to web applications, or does it also occur in mobile and desktop applications?<br> What are the best practices for handling user reconnections in SignalR?<br> Can you recommend any resources or documentation that provide in-depth explanations and solutions for this issue?<br> I've searched online but found limited information on this topic. Any detailed explanations or pointers to comprehensive resources would be greatly appreciated.</p> <p>You Can see my db structure below: <br> <a href="https://media.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F5afw4s9qmn7qkg2384al.png" class="article-body-image-wrapper"><img src="https://media.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F5afw4s9qmn7qkg2384al.png" alt="Image description"></a></p> <p>Thank you!</p> csharp dotnet dotnetcore aspdotnet