With the .NET 6 preview 4 we now have Ahead-Of-Time compilation for Blazor Wasm. This is an example of improved performance for one of my projects. 

These are the customer-reported issues addressed in 15.9.8:

• ModelBus-enabled text transformation fails on 15.8.
• SSDT: Fix to improve performance of loading solutions with multiple projects. 

Use HTTP Keep Alive - It is another hidden gem which resides in response header and helps in improving the performance of our web applications significantly.

.NET Conf 2023
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• VS is more responsive when running Git operations.
• Debugging large solutions with /debug:fastlink PDBs is more robust. Changes in the PDB/DIA lead to reduced latency and a 30% reduction in heap memory consumption in the VS debugger that used to cause crashes.
• C++ compiler bugfixes:
  • Fix for the SSA optimizer incorrectly sinking a function call past a store to a variable used in a __finally handler.
  • Fix for the SSA optimizer sometimes incorrectly analyzing memory loads from locations with negative offsets.
  • Fix for the optimizer incorrectly transforming a pre-incremented loop into a post-incremented loop. This was found compiling the ICU project.
• Microsoft bumped up the Java™ Development Kit 8 to Update 172 (JDK version 8u172). 

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
}

public enum CompatibilityVersion
{
   Version_2_0 = 0,
   Version_2_1 = 1,
   Latest = int.MaxValue
}

services.AddMvc()
   .SetCompatibilityVersion(CompatibilityVersion.Version_2_1) // Give me all of the 2.1 behaviors
   .AddMvcOptions(options =>
   {
      options.AllowCombiningAuthorizeFilters = false; // don't combine authorize filters (keep 2.0 behavior)
      options.AllowEmptyInputInBodyModelBinding = false; // shouldn't treat empty input as valid.
   });

Call sync method. It does async I/O under the covers!  

4 Things I Like in The New Visual Studio 2022 17.7 Update 

9 Things I Learned Building the Same App with Angular and React 

How I Learned to Stop Worrying and Love the Service Locator