Gatling - GenevaJUG, 2012-11-27.pdf

Transcript

1. How to stress test your application with Gatling ? Geneva, November 27th 2012
2. First commit in june 2011 by S. Landelle and R. Sertelon About 20k LOCs by 19 contributors Commiter since Spring 2012
3. Why a new stress tool ?
6. Issue n°1: High performance http://www.shopfbparts.com/catalog/nal-19201331_w.jpg
7. 1 user = 1 thread
8. With 50 threads on a JVM http://www.ausmotive.com/F1/2010/British-GP-05.jpg
9. With 2000 threads on a JVM
10. Blocking IO
11. That's what your threads will do most of the time, waiting ... http://www.flickr.com/photos/carlotancredi/3447589391
12. ... and sleeping http://www.flickr.com/photos/maciejdakowicz/4770794503
13. Does it actually matter ?
15. Yes !
17. Issue n°2: Usability
18. Graphical Interface http://www.spacebio.uni-bonn.de/ahp/Parabel/Par_Images/240304-Cockpit_BIG.jpg Listen, it's actually not complicated ...
19. Issue n°3: Maintenance
20. What was this change about ?
21. Gatling can change all that ! http://static.lexpress.fr/medias/15/mai-68_124.jpg, copyright by AFP
22. Say hello to my little friend ... Version 1.3.5 (Released November 23rd 2012)
23. > Actor model (Akka) > Async IO (Async-Http-Client + Netty) Be asynchronous !
24. Scenario = Code = DSL http://gringocentralsanramon.blogspot.ch/2012/02/getting-published-writing-seminar-wed.html
25. Easy
26. Démo ! http://frizzlesworld.files.wordpress.com/2011/02/computer-cat.jpg
27. Use the rich DSL ... • .regex() / .css() / .xpath() / jsonPath() • .find() / .findAll() / .count() • .is() / .in() / .not / .whatever • .doIf() / .repeat() / .during() / . asLongAs() • .randomSwitch() / .roundRobinSwitch() • .tryMax() / .exitBlockOnFail() • .feeder() : csv() / tsv() / jdbc()
28. ... or write your own Scala code
29. ... or try the recorder.
30. Démo ! http://frizzlesworld.files.wordpress.com/2011/02/computer-cat.jpg
31. Markov chains (Cycles are not supported so far...)
32. See also : .roundRobinSwitch()
33. Polling
34. Démo ! http://frizzlesworld.files.wordpress.com/2011/02/computer-cat.jpg
35. Integrations : > Maven Plugin > Maven archetype (run in IDE) > Graphite live reporting
36. Coming soon : > Jenkins plugin > Requests grouping > Websockets > Clustering > ...
37. @nremond @nremond http://github.com/excilys/gatling @GatlingTool http://www.gatling-tool.org