best practices for Azure SQL Database Connection Pooling implementing Entity Framework Core?
I need some guidance on I'm collaborating on a project where I've been banging my head against this for hours... I'm dealing with This might be a silly question, but I'm working on a project and hit a roadblock. After trying multiple solutions online, I still can't figure this out. I'm experiencing connection pooling issues while using Entity Framework Core with Azure SQL Database... Despite following the best practices, I frequently encounter the behavior `System.InvalidOperationException: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool.` This behavior occurs under moderate load, particularly when multiple requests are hitting the API simultaneously. I've configured the connection string in `appsettings.json` like this: ```json "ConnectionStrings": { "DefaultConnection": "Server=tcp:yourserver.database.windows.net;Database=yourdb;User ID=youruser@yourserver;Password=yourpassword;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;" } ``` I am using `Entity Framework Core 5.0.0` and the application is hosted in Azure App Service. To optimize the connection management, I have also tried tweaking the `Max Pool Size` in the connection string without seeing any improvement: ```json "ConnectionStrings": { "DefaultConnection": "Server=tcp:yourserver.database.windows.net;Database=yourdb;User ID=youruser@yourserver;Password=yourpassword;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;Max Pool Size=100;" } ``` I am also aware of the `DbContext` lifecycle management and ensure that I'm using dependency injection properly by creating `DbContext` per request. However, the question continues. I've monitored the SQL Database performance metrics in Azure and noticed that the DTU consumption spikes during peak times which correlates with the connection errors. Can someone provide insights on what could be causing these connection timeout issues? Are there any specific Entity Framework configurations or Azure SQL Database settings that I might need to adjust to handle higher loads effectively? I'm working on a service that needs to handle this. What am I doing wrong? My development environment is macOS. Has anyone else encountered this? My development environment is Windows. Any help would be greatly appreciated! I'm on Linux using the latest version of C#. Any feedback is welcome! Could someone point me to the right documentation? I'd really appreciate any guidance on this. Is there a better approach?