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Advanced Performance Engineering in .NET Course by DevOpsSchool

5 Days Program Advanced performance engineering in .NET:

CategoryTool(s)Why it’s the best (quick note)
Code Profiling & DebuggingVisual Studio Profiler, JetBrains dotTraceDeep CLR insights; VS built-in + dotTrace’s powerful async/timeline views
Memory & GC AnalysisJetBrains dotMemory, PerfViewdotMemory excels at leak/retention graphs; PerfView is unmatched for ETW/GC deep dives
Micro-BenchmarkingBenchmarkDotNetGold standard for accurate, repeatable .NET microbenchmarks
Load & Stress Testingk6, Apache JMeterk6 is modern/CI-friendly; JMeter remains versatile and widely adopted

10 Days Program Advanced performance engineering in .NET:

CategoryTool(s)Why it’s the best (quick note)
Code Profiling & DebuggingVisual Studio Profiler, JetBrains dotTraceDeep CLR insights; VS built-in + dotTrace’s powerful async/timeline views
Memory & GC AnalysisJetBrains dotMemory, PerfViewdotMemory excels at leak/retention graphs; PerfView is unmatched for ETW/GC deep dives
Micro-BenchmarkingBenchmarkDotNetGold standard for accurate, repeatable .NET microbenchmarks
Load & Stress Testingk6, Apache JMeterk6 is modern/CI-friendly; JMeter remains versatile and widely adopted
APM (Production)Azure Application Insights, DynatraceApp Insights is first-class for .NET/Azure; Dynatrace offers superb auto-discovery & AI insights
Distributed TracingOpenTelemetry (.NET SDK), JaegerOTel is the vendor-neutral standard; Jaeger is a robust open-source backend
System & Infra MonitoringPrometheus + Grafana, Azure MonitorProm+Grafana for flexible metrics/visuals; Azure Monitor for tight Azure integration
CI/CD Perf Automationk6 (in pipelines), BenchmarkDotNet (in CI)Shift-left perf gates with k6; catch code-level regressions via BenchmarkDotNet on PRs

Here’s a comprehensive and balanced agenda (theory + hands-on + labs + project).


Comprehensive 5-Day Training Program

Advanced Performance Engineering in .NET


Day 1 – Foundations of Performance Engineering in .NET

1.1 Introduction to Performance Engineering

  • Importance of performance engineering in modern .NET systems
  • Difference between performance testing and performance engineering
  • Key metrics: throughput, latency, response time, scalability
  • Understanding SLAs, SLOs, SLIs for .NET services

1.2 .NET Runtime and Performance Model

  • CLR execution model (JIT, RyuJIT, Tiered Compilation)
  • Garbage Collection (GC) modes (Workstation, Server, Background, Low-latency)
  • Threading model in .NET Core/5/6/7/8

1.3 Performance Metrics & Baselines

  • Establishing baseline performance for .NET apps
  • Identifying acceptable thresholds for web vs desktop vs microservices

1.4 Hands-On Lab

  • Build a sample ASP.NET Core application
  • Use built-in Visual Studio Diagnostic Tools to measure CPU, memory, and response times
  • Capture baseline metrics and document

Takeaway: Clear understanding of how performance is measured and baselined in .NET apps.


Day 2 – Identifying Bottlenecks in .NET Applications

2.1 Common Bottlenecks in .NET Systems

  • CPU-bound vs I/O-bound workloads
  • Async/await pitfalls, deadlocks, and thread starvation
  • Memory leaks, excessive allocations, and GC pressure
  • ORM/Database inefficiencies (EF Core pitfalls)

2.2 Tools & Techniques to Find Bottlenecks

  • Visual Studio Profiler (live profiling)
  • JetBrains dotTrace (timeline + async flows)
  • dotMemory for leak detection and heap analysis
  • PerfView for ETW-based deep runtime analysis

2.3 Hands-On Labs

  • Lab 1: Profile a .NET Core Web API under simulated load (Visual Studio Profiler)
  • Lab 2: Identify memory leaks with dotMemory and fix them
  • Lab 3: Analyze GC events with PerfView

Takeaway: Developers can confidently locate performance bottlenecks at code and runtime level.


Day 3 – Benchmarking & Load Testing for .NET

3.1 Benchmarking in .NET

  • Importance of benchmarking in microservices and libraries
  • Writing micro-benchmarks with BenchmarkDotNet
  • Avoiding benchmarking pitfalls (JIT warmup, dead-code elimination)

3.2 Load & Stress Testing

  • Types of performance tests: load, stress, spike, endurance
  • When to use each in a .NET application lifecycle
  • Integrating load testing into CI/CD pipelines

3.3 Tools for Load Testing

  • k6: modern load testing for APIs/microservices
  • Apache JMeter: traditional load/stress/endurance testing

3.4 Hands-On Labs

  • Lab 4: Write and run micro-benchmarks with BenchmarkDotNet
  • Lab 5: Execute load tests on ASP.NET Core APIs using k6
  • Lab 6: Stress test with JMeter and analyze reports

Takeaway: Ability to design and execute reliable benchmarks and load tests.


Day 4 – Multi-Layer Optimization in .NET Systems

4.1 Application Layer Optimizations

  • Efficient memory management in .NET (object pooling, Span, ValueTask)
  • Async programming best practices (Task vs Thread vs Parallel)
  • LINQ optimizations and avoiding hidden allocations
  • Using caching strategies in ASP.NET Core

4.2 Middleware & Server Optimizations

  • Kestrel tuning for high-throughput APIs
  • gRPC performance tuning in .NET Core
  • Messaging broker performance (Azure Service Bus, RabbitMQ, Kafka with .NET)

4.3 Database Layer Optimizations

  • Optimizing EF Core queries (N+1 problems, eager vs lazy loading)
  • Indexing and query execution plans (SQL Server Profiler, Query Store)
  • Database connection pooling and transaction management

4.4 Hands-On Labs

  • Lab 7: Optimize EF Core queries and compare performance before vs after
  • Lab 8: Tune Kestrel server settings and measure throughput improvements
  • Lab 9: Database profiling with SQL Profiler on a sample .NET app

Takeaway: Developers can optimize performance across application, middleware, and database layers.


Day 5 – Continuous Performance Engineering & Capstone Project

5.1 Continuous Performance Monitoring

  • Integrating BenchmarkDotNet + k6 in CI/CD pipelines (Azure DevOps, GitHub Actions)
  • Automated performance regression tests
  • Monitoring .NET services with Azure Application Insights
  • Using OpenTelemetry .NET SDK for distributed tracing

5.2 Resilience & Chaos Engineering

  • Implementing Polly for retries, fallbacks, circuit breakers
  • Testing resilience with Azure Chaos Studio
  • Observability dashboards with Grafana + Prometheus (for .NET containers)

5.3 Capstone Project

  • End-to-end performance engineering project on a sample ASP.NET Core microservice:
    • Profile & identify bottlenecks
    • Optimize code, database, and middleware
    • Benchmark with BenchmarkDotNet
    • Load test with k6
    • Monitor with Application Insights
    • Demonstrate improvements in metrics

5.4 Wrap-Up & Knowledge Consolidation

  • Performance engineering checklist for .NET projects
  • Best practices for enterprise adoption
  • Q&A and discussion on applying learnings to real projects
  •  

Takeaway: Developers leave with a full lifecycle understanding — from profiling to optimization to continuous performance in production.


📊 Tools Focused Summary (Quick Reference)

CategoryTool(s)Why it’s the best
Code Profiling & DebuggingVisual Studio Profiler, JetBrains dotTraceCLR + async/timeline insights
Memory & GC AnalysisJetBrains dotMemory, PerfViewLeak detection + ETW runtime deep dive
Micro-BenchmarkingBenchmarkDotNetAccurate, repeatable benchmarking
Load & Stress Testingk6, Apache JMeterCI/CD friendly + versatile
Continuous Monitoring & APMAzure Application Insights, OpenTelemetryFirst-class .NET monitoring & tracing
Chaos & ResiliencePolly, Azure Chaos StudioCode-level + infrastructure-level resilience

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