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2026-01-08 dotnet dotnet-10

.NET 10 made your NIC list explode? Filtering GetAllNetworkInterfaces() without lying to yourself

How to filter GetAllNetworkInterfaces() in .NET 10 when virtual adapters from Hyper-V, Docker, WSL, and VPNs flood the list. Includes a two-stage filter with explicit tradeoffs.

2026-01-08 dotnet dotnet-10

Queryable Encryption + Vector Search in the MongoDB EF Core Provider (and why it matters for .NET 9 and .NET 10)

The MongoDB EF Core provider now supports Queryable Encryption and vector search. Here is what that means for .NET 9 and .NET 10 apps that already use EF Core.

2026-01-08 dotnet dotnet-10

SwitchMediator v3: A Zero-Alloc Mediator That Stays Friendly to AOT

SwitchMediator v3 targets zero-allocation, AOT-friendly dispatch for .NET 9 and .NET 10 CQRS services. Here is what that means and how to benchmark your own mediator.

2026-01-04 dotnet dotnet-10

.NET 10 Performance: SearchValues

Use SearchValues in .NET 10 for high-performance multi-string searching. Replaces foreach loops with SIMD-accelerated matching using Aho-Corasick and Teddy algorithms.

2026-01-04 dotnet dotnet-9

Streaming Tasks with .NET 9 Task.WhenEach

.NET 9 introduces Task.WhenEach, which returns an IAsyncEnumerable of tasks as they complete. Here is how it simplifies processing parallel results as they arrive.

2026-01-02 csharp-13 csharp dotnet

C# 13: The End of `params` Allocations

C# 13 finally eliminates the hidden array allocation behind params. You can now use params with Span, ReadOnlySpan, List, and other collection types for zero-allocation variadic methods.

2026-01-02 csharp csharp-proposals

C# Proposal: Discriminated Unions

A look at the C# discriminated unions proposal: the union keyword, exhaustive pattern matching, and how it could replace OneOf libraries and class hierarchies.

2026-01-02 dotnet dotnet-9

.NET 9: The End of lock(object)

.NET 9 introduces System.Threading.Lock, a dedicated lightweight synchronization primitive that replaces lock(object) with better performance and clearer intent.

2026-01-01 dotnet dotnet-9

Optimizing Frequency Counting with LINQ CountBy

Replace GroupBy with CountBy in .NET 9 for cleaner, more efficient frequency counting. Reduces allocations from O(N) to O(K) by skipping intermediate grouping structures.

2025-04-12 dotnet dotnet-10

.NET 10: Stack allocation of arrays of value types

In .NET 10, the JIT can stack-allocate small fixed-size arrays of value types, eliminating heap allocations and delivering up to 60% faster performance compared to .NET 9.