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Azure, IIS, ASP.NET, and LeanSentry

LeanSentry: Deeper insight into your windows web stack

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About me

I am the lead developer for LeanSentry, an expert application monitoring service for .NET web apps.

Before that, I used to work for Microsoft where I helped build the IIS 7.0 and ASP.NET products.

Expert IIS and .NET performance guides

How to reset and restart IIS correctly.
Get the best IIS application pool availability with warmup.
Turn on richer IIS logs for IIS log analysis on steroids.
Fix 503 queue full errors and improve RPS by tuning the IIS thread pool.
Tune high CPU usage in w3wp.exe.
Fix .NET memory leaks and tune w3wp memory usage.
Fix IIS and ASP.NET hangs, and async await hangs in ASP.NET core, MVC and WebAPI.

Recent Posts

Fixing W3WP.exe memory leaks is easier than you think
Async await hangs in ASP.NET Core, MVC and WebAPI
You may be massively overpaying for your CPUs
New guide to IIS and asp.net hangs

Fix errors, tune performance, and analyze hangs in your web app.
Get the trial

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Application pool ASP.NET Async Azure Cloud CPU Guides Hangs How-To IIS IISRESET IIS thread pool LeanSentry Memory News Nuget Performance Recycle application pool TechEd Troubleshooting Warmup

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