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Here are 9 excellent libraries used in .NET projects for better architecture, testing, and performance:
- YARP – A reverse proxy toolkit for building high-performance gateway servers.
2. Polly – A resilience and transient-fault-handling library.
- EF Core – A lightweight, extensible ORM for .NET.
- Refit – A type-safe REST library for .NET.
- Testcontainers – For lightweight, disposable Docker containers in tests.
6. OpenTelemetry – For observability and distributed tracing.
7. FluentValidation – A validation library for .NET.
8. xUnit – A popular unit testing framework.
- Dapper – A micro-ORM for fast data access.
Free Resource:
You Should Know:
1. YARP (Yet Another Reverse Proxy) Setup
dotnet add package Yarp.ReverseProxy --version 1.0.0
Basic Reverse Proxy Configuration:
{
"ReverseProxy": {
"Routes": {
"route1": {
"ClusterId": "cluster1",
"Match": { "Path": "/api/{catch-all}" }
}
},
"Clusters": {
"cluster1": {
"Destinations": {
"destination1": { "Address": "http://backend-service/" }
}
}
}
}
}
2. Polly Retry Policy Example
var retryPolicy = Policy .Handle<HttpRequestException>() .WaitAndRetryAsync(3, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)));
3. EF Core Migration Commands
dotnet ef migrations add InitialCreate dotnet ef database update
4. OpenTelemetry with ASP.NET Core
services.AddOpenTelemetryTracing(builder => builder .AddAspNetCoreInstrumentation() .AddConsoleExporter());
5. Dapper Query Execution
using var connection = new SqlConnection(connectionString);
var users = connection.Query<User>("SELECT FROM Users WHERE Active = @Active", new { Active = true });
What Undercode Say:
- YARP is excellent for microservices routing.
- Polly ensures fault tolerance in distributed systems.
- EF Core simplifies database interactions but Dapper is faster for read-heavy apps.
- Testcontainers replaces mock databases with real instances for integration tests.
- OpenTelemetry is a must for cloud-native observability.
Linux Command for Monitoring .NET Apps:
sudo dotnet-counters monitor --process-id <PID> --counters System.Runtime
Windows Command for Debugging:
Get-Process -Name "dotnet" | Select-Object CPU, Id, ProcessName
Expected Output:
A scalable, observable, and resilient .NET application with efficient testing and validation.
Prediction:
.NET libraries will continue evolving with more AI integrations, making automated debugging and performance tuning mainstream.
References:
Reported By: Milan Jovanovic – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
