A lightweight production monitoring service
made specifically for Windows Server, IIS & ASP.NET
 

What makes LeanSentry different?


1. Made exclusively for Windows Server

Built exclusively for the Microsoft web platform. LeanSentry was made specifically to diagnose applications on the Microsoft web platform, based on our own expertise of building and working with Windows Server.

This allows us to explain and diagnose platform-specific problems better than any generic APM tool.

Built on the Microsoft web platform. LeanSentry is built from the ground up using Windows Server 2008, IIS, ASP.NET, and Windows Azure. We live and breathe the Microsoft web platform, and its all we do. Our story.

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2. Troubleshoot a hang in minutes, not days.

Diagnoses most production problems, automatically. Traditional monitoring tools can show you the data, but you still need deep platform knowledge to interpret it and use it to troubleshoot problems. LeanSentry automatically diagnoses most production problems, like IIS/ASP.NET hangs and application pool crashes, so you can get on with your day.

Bridges the gap between operations and developers. In the past, IT would use production monitoring to identify problems, and ask developers to debug them with an arsenal of hardcore developer tools like debuggers and profilers.

Unfortunately, by the time the developer would do this, the problem would likely be already gone. Most of the time, production problems are very hard to reproduce in a test environment, making fixing them near impossible.

LeanSentry solves this problem by automatically troubleshooting most production problems when it detects them, using expert troubleshooting techniques developed specifically for Windows Server applications. This way, operations always have the evidence the developer needs to fix the problem, even if it happens once.

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3. Lightweight monitoring without profilers.

Lightweight monitoring using standard Windows protocols. Unlike existing APM tools that use a profiler to monitor applications, LeanSentry performs lightweight monitoring using standard Windows protocols. By correlating data between IIS logs, Performance counters, ETW tracing, and WMI, LeanSentry can offer the same or deeper insight into the application without loading a profiler.

As a result, LeanSentry monitoring is very lightweight, non-intrusive, and cannot slow down or crash an application like a profiler can.

Sandboxed, agentless monitoring. LeanSentry can be deployed on a separate VM, allowing it to monitor your production servers remotely without ever installing anything on them. This allows LeanSentry to provide the smallest possible footprint in your environment.

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How is LeanSentry different from SCOM, AviCode, NewRelic, AppDynamics, etc?

SCOM/AviCode. System Center Operations Manager is a comprehensive and complex platform for monitoring Windows Server, and provides code-level analysis with the AviCode profiler. LeanSentry complements SCOM well by providing a very simple view of application performance that is much easier to use. LeanSentry also automatically diagnoses IIS/ASP.NET production problems like hangs and crashes, whereas SCOM does not.

New Relic/AppDynamics. Both of these are good multi-platform production profilers that provide code-level analysis. LeanSentry is made specifically for Windows Server applications. LeanSentry does not use a profiler, and as a result does not always provide the same code-level details. However, LeanSentry is significantly more lightweight because it does not load a profiler into your applications. Additionally, LeanSentry automatically diagnoses production IIS/ASP.NET problems like hangs and crashes, whereas those tools do not.

Nagios/ServerDensity/etc. LeanSentry is made to provide deeper Windows Server monitoring and diagnostics than the traditional server monitoring tools. Instead of just showing you the performance data, LeanSentry creates a simple to understand picture of your application. Additionally, LeanSentry automatically diagnoses production IIS/ASP.NET problems like hangs and crashes, whereas those tools do not.

EventViewer/Performance Monitor/LogParser/etc. These traditional diagnostic tools have been the bread and butter of production troubleshooting for years. Unfortunately, these tools do not provide 24x7 production monitoring, do not aggregate data, and require platform expertise to make sense of the data. LeanSentry takes things to the next level by analyzing the data for you, and giving operations a simple but effective view of application health. Additionally, LeanSentry automatically diagnoses production IIS/ASP.NET problems like hangs and crashes, whereas those tools do not.

Debuggers/Profilers/AdPlus/DebugDiag. These tools have been developer favorites when troubleshooting production problems. Using these tools in production is hard because it relies on catching the problem live. These tools have a very high overhead that prevents them from running in production 24x7. LeanSentry replaces these tools with lightweight 24x7 monitoring that always detects problems, and automatically diagnoses most problems without the need for manual profiling or debugging.

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