Struggling with Asynchronous Database Calls in a .NET Core Microservices Architecture
I've looked through the documentation and I'm still confused about Currently developing a microservices architecture using .NET Core 6, where I've implemented a database service to manage user profiles. The challenge arises when trying to fetch user data asynchronously. While working through the implementation, I utilized `async` and `await` for the database calls to ensure non-blocking operations. However, it seems that the responses are not being returned as expected, resulting in inconsistent data retrieval. For instance, the service method fetching user details looks like this: ```csharp public async Task<UserProfile> GetUserProfileAsync(int userId) { using var dbContext = new UserDbContext(); return await dbContext.UserProfiles.FindAsync(userId); } ``` The call to this method from my controller is as follows: ```csharp [HttpGet("/user/{id}")] public async Task<IActionResult> GetUser(int id) { var userProfile = await _userService.GetUserProfileAsync(id); if (userProfile == null) { return NotFound(); } return Ok(userProfile); } ``` Despite these efforts, I occasionally encounter a `NullReferenceException` when the method is triggered under load, suggesting that the data context may not be properly managed. I've tried adjusting the configuration of the DbContext, but issues persist, especially when multiple requests are made simultaneously. Additionally, I explored using `ConfigureAwait(false)` in the database retrieval to avoid deadlocks, but that didn't seem to resolve the issue either. Could there be a problem with the way the DbContext is being instantiated or managed? Are there best practices for ensuring that the asynchronous calls work reliably in a microservices environment? Any guidance on diagnosing this issue would be greatly appreciated. I've been using C# for about a year now. Any help would be greatly appreciated!