Async/Await & Performance
Performance optimization in .NET involves async/await for I/O, efficient memory use with Span and ArrayPool, caching (in-memory, Redis), and profiling to identify bottlenecks.
35 min•By Priygop Team•Last updated: Feb 2026
Performance Techniques
- async/await — Use for all I/O operations. Don't use for CPU-bound work. Never use .Result or .Wait()
- IMemoryCache — In-memory caching for frequently accessed data. Set expiration policies
- Distributed cache (Redis) — IDistributedCache for multi-server environments
- Span<T> — Stack-allocated memory slice for zero-copy operations
- ArrayPool<T> — Rent and return reusable arrays to reduce GC pressure
- BenchmarkDotNet — Micro-benchmarking with statistical analysis
- DbContext pooling — Reuse EF Core contexts to reduce allocation overhead