An Efficient Dictionary for IPAddress Tracking using .NET 9 with AlternateLookup and IAlternateEqualityComparer

In this post, I will introduce and demonstrate enhancements to collections in .NET 9 and C# 13 for low-allocation code paths. Specifically, I will demonstrate using a custom IAlternateEqualityComparer and the AlternateLookup on a Dictionary used for efficiently tracking IP address information, keyed on the bytes of IP addresses. My use case, the basis for […] The post An Efficient Dictionary for…