Debugging,Troubleshooting & Monitoring Distributed Web & Cloud Applications at Silicon Valley Code Camp (10/05/2013)
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The document outlines best practices for debugging and troubleshooting distributed web and cloud applications, highlighting differences in development and operations (DevOps) and the complexities of application performance. It discusses tools such as Intellitrace and AppDynamics, detailing their advantages and limitations for application monitoring and analysis. The emphasis is on understanding the impact of development processes on operations and the importance of choosing the right tools for effective performance management.
Debugging,Troubleshooting & Monitoring Distributed Web & Cloud Applications at Silicon Valley Code Camp (10/05/2013)
- 1. Debugging, Troubleshooting Distributed Web & Cloud Applications Foothill College, Oct. 5th, 2013
- 2. Theo Jungeblut • Engineering manager & lead by day at AppDynamics in San Francisco • Coder & software craftsman by night • Architects decoupled solutions tailored to business needs & crafts maintainable code to last • Worked in healthcare and factory automation, building mission critical applications, framework & platforms • Degree in Software Engineering and Network Communications • Enjoys cycling, running and eating theo@designitright.net www.designitright.net
- 3. Warning • Contains also proprietary software • This areas are pointed out • Please walk away now, if that is not acceptable for you, it’s okay
- 4. Overview • Inquiry about the Status Quo • Some Facts -> Dev Process & Ops Reality • Monolithic Applications • Debugging & Logging • Distributed Applications • Side Effects you need to troubleshot • Performance Counter • Microsoft IntelliTrace • AppDynamics • Summary • Q & A
- 5. We need YOU!
- 6. How agile are You?
- 7. The Impact of Process * from Wikipedia: http://en.wikipedia.org/wiki/File:Agile-vs-iterative-flow.jpg
- 8. How many releases do your company have a year?
- 9. Typical Releases a Year* 58% 17% 21% 3% 2+ months monthly weekly daily http://www.appdynamics.com/blog/2011/12/14/storm-clouds-in-2012-summary-of- appdynamics-apm-customer-survey/
- 10. Development + Operations = DevOps * from Wikipedia: http://en.wikipedia.org/wiki/File:Agile-vs-iterative-flow.jpg
- 11. Difference between Dev & Ops Dev • Getting / being agile: need for frequent updates with new feature and bug fixes • Achieves stability trough running latest Ops • Highest goal: stable execution flawless execution, by knowing the environment and software • Achieves stability through careful rollouts
- 12. “The Past/Present”* Web Server DB User * or maybe still your present?
- 13. “The Past/Present” - Architecture Data Access Layer Business Logic Layer Presentation Layer DB
- 16. Traditional Debugging Advantages • Visibility for executed code path Disadvantages • Performance impact • Requires software installation • Often not possible in production • Typical does not find easily distributes issues • Only real time results
- 17. Low Impact Debugger & Crash Dump Debugging http://www.windbg.info
- 18. Automatic Crash Dump Analysis http://blogs.msdn.com/b/debugdiag/archive/2013/10/03/debugdiag-2-0-is-now-rtw.aspx
- 19. Low Impact Debugger & Crash Dump Debugging Advantages • Low overhead • Dump collection can be done in production • Allows for offline analysis of dump files • Can be setup to automatically collect dump files for crashes • Allows very deep analysis and debugging Disadvantages • Automatic analysis limited • Manual analysis has steep learning curve • Offline review requires to have precise dll version available
- 20. The Book http://www.amazon.com/Advanced-NET-Debugging-Mario-Hewardt/dp/0321578899
- 21. Log Files Advantages • Output adjustable without restart • Accepted in Production Disadvantages • Manual, time intense creation of log statements • Manual, time intense process of result review • Limited scope & visibility • Potentially high performance impact based on IO
- 22. “The Present/Future”- Architecture Microsoft MSDN: http://msdn.microsoft.com/es-es/architecture/gg189193
- 23. “The Present/Future” ASP.NET MVC 3/4 (IIS) User WAS Tomcat Azure Web Role SQL Server MySQL Active Directory Azure Worker Role WAS 3rd Party Web Services Java Application MongoDB 3rd Party Web Services WCF HTTP
- 24. The (Netflix) Distributed Reality * * http://techblog.netflix.com/2012/06/netflix-operations-part-i-going.html
- 25. What has all this to do with Debugging and Troubleshooting?
- 26. Who does really know how their application is performing?
- 28. Concurrency http://en.wikipedia.org/wiki/File:Smithposter.jpg • Deadlocks • Raise Conditions • Unexpected complexity • …
- 29. Data Volume http://en.wikipedia.org/wiki/File:Smithposter.jpg • constantly increasing • Volume hides details • Handling volume impacts resources • …
- 30. Resources http://blog.laptopmag.com/amd-cries-foul-but-tests-show-battery-life-inferior-to-intels/battery_morpheus • are limited • Danger of Starvation • …
- 31. Who is Performance Testing every release?
- 33. Dev + Ops = Success • DevOps has to be a combined approach • Mostly no visibility in real performance & production state
- 34. IntelliTrace™ • “Flight Recorder” for your Process • Records configurable details • Allows offline analysis • Microsoft specific Tool in Visual Studio • Java Flight Recorder within the Oracle world IntelliTrace http://msdn.microsoft.com/en-us/library/hh398365.aspx Java FlightRecorder: http://gotocon.com/dl/goto-aar- 2013/slides/RickardBckman_JavaFlightRecorderNextGenerationDiagnosticsAndProfiling.pdf
- 35. Summary IntelliTrace Advantages • Allows great visibility into single process/AppPool • Allows to play back test or production issue Disadvantages • Limited to Single Process / AppPool Visibility • Should be only temporally enable in production • Requires configuration effort for balance between details & performance
- 36. Performance Counter / Perfmon http://msdn.microsoft.com/en-us/library/aa645516(v=vs.71).aspx
- 37. Performance Counter • Collect machine wide and process specific data • Allows on- and offline analysis • Microsoft specific tool build into Windows http://www.codeproject.com/Articles/8590/An-Introduction-To-Performance-Counters
- 38. Summary Performance Counter Advantages • Huge OOTB support in Windows/IIS/etc. • Low overhead • Extensible Disadvantages • Collecting application specific data requires source code changes
- 39. AppDynamics • Application Performance Management • Optimized for Production • Monitoring instead of investigating • Providing the “Right-Data” Let’s take a look http://www.appdynamics.com/products-editions.php
- 40. Summary AppDynamics Advantages • Works in production on high performance sides • Monitors, Notify, Troubleshoot • Allows instance handling in cloud environments • Free lite version • Collects required application details Disadvantages • Full version not free • Does not include every application detail
- 41. Build your own Opinion (for Free) • Lite Version free but limited • 30 days free Trial of Pro & Azure Version http://www.appdynamics.com/products-free-download.php
- 42. Summary • Understand Dev Impact to Ops Execution • Understand the business impact of production issues • Monolithic is simpler to Troubleshoot • Distributed is more complex • The right tools can make a Big Difference
- 43. Downloads, Feedback & Comments: Q & A Graphic by Nathan Sawaya courtesy of brickartist.com theo@designitright.net www.designitright.net www.speakerrate.com/theoj www. slideshare.net/theojungeblut
- 45. Time to say Thank You! The Organizers Foothill College (team) The volunteers (how about you?) The Sponsors Pictures from http://blog.siliconvalley-codecamp.com
- 46. … thanks for you attention! And visit and support the www.siliconvalley-codecamp.com Please fill out the feedback, and… www.speakerrate.com/theoj