In this post, we introduced the idea that not all performance optimisations need to be complex to implement. In this example, we optimised the ToUrl method of the NEST library by conditionally avoiding executing code we know would cause allocations.  

“AutoMapper” of other ways in .NET Core 

Is Entity Framework Core Quicker than Dapper? ORM Speed Test 

Comparing Your Performance Options: Telerik DataGrid, JavaScript, and Blazor Code 

.NET Memory Performance Analysis
Know when to worry about it, and what to do if you need to worry about it 

Various gRPC benchmarks 

Performance Improvements in .NET 5 

In case you are curious, a new benchmark appeared. The benchmark is really simple at present, but I think their plans are to increase the complexity over time to show a more real-world use case than something like the TechEmpower benchmarks which are typically optimized for performance.