How can I implement performance impact logging in ASP.NET Core?

How can I implement performance impact logging in ASP.NET Core?

You can implement performance impact logging in ASP.NET Core by using middleware to log request times and response times.

What middleware should I use for this?

You can create custom middleware or use existing libraries like Serilog or NLog to log performance metrics.

Can you show me a code example?

Sure! Here's a simple example of custom middleware:

public class PerformanceLoggingMiddleware
{
    private readonly RequestDelegate _next;

    public PerformanceLoggingMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        var watch = Stopwatch.StartNew();
        await _next(context);
        watch.Stop();
        var elapsedMs = watch.ElapsedMilliseconds;
        // Log the elapsed time
    }
}

Don't forget to register it in the Configure method!

How do I register the middleware in the Startup class?

You can register the middleware in the Configure method like this:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseMiddleware<PerformanceLoggingMiddleware>();
    // other middleware
}