Answer
Diagnostic middleware provides insights into requests and system behavior.
Examples: DeveloperExceptionPage, SerilogRequestLogging, Application Insights.
Helps detect failures, anomalies, and performance issues.
Quick Answer
Diagnostic middleware provides insights into request processing. UseDeveloperExceptionPage() shows detailed error info in development. UseStatusCodePages() adds custom responses for 404/500. Built-in health check middleware (UseHealthChecks) reports app status. Custom diagnostics middleware can log request/response details, timing, and add correlation IDs to all requests for distributed tracing.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ