New-age Transactional Systems - Not Your Grandpa's OLTP
John Hugg discusses high volume transaction processing applications with high and low frequency profiles, and how VoltDB can be used for that purpose.
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Posted by Floyd Marinescu on Aug 03, 2007
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Would it be possible to have a URL with the slides to download?
yes
...because you basically cover the basics of a good testing approach, with or without java, with or without Spring. Even people who don't use Java can listen to this conference - at least the first half -.
Rod,
I fear that your knowledge of UI unit test tools is outdated: HttpUnit is a dead project (or at least deeply asleep). This is the reason why we've moved to HtmlUnit for over 3 years in Canoo WebTest.
HtmlUnit is also the default underlying layer used by jWebUnit (that you mentionned).
Your assertion concerning limited js support is not fully correct either.
Nevertheless all these tools are too low level and for instance junit like reports are too limited for UI tests. Have a look at WebTest tests written as unit tests in Groovy (just like what Grails can generate). This allows you to use the higher level API of WebTest and have reach reports just from your unit tests. This makes a real difference what concerns the maintainability.
All these years I was blaming myself for being lazy and still using real db with transaction-wrapped test methods (with auto-rollback at the end) for testing DAO layer. I thought that best practices require using in-memory db (for speed) and using full-blown db data-fixture setup/cleanup steps before and after running each step (approach heavily advocated by ROR for example). The only reason I didn't go that route is the lack of immediate benefits. Now it's such a relief to hear from respected authority like Rod that it's a "good thing" :)
Hi Marc,
Thanks for updating the http/html unit testing scenario.
Can you update with some links so that others can get a quick overview ?
Thanks ,
BR,
~A
How to download?
Very usefull presentation!
One small point: a complete test (not a Unit Test...) should check for failures during the transaction commit phase, including problems on a two phase commit scenarios.
Regards,
Rudolf
Ups, sorry:
HtmlUnit: htmlunit.sourceforge.net
WebTest: webtest.canoo.com
WebTest from Groovy: groovy.codehaus.org/Testing+Web+Applications
webtest.canoo.com/webtest/manual/groovyTesting....
Screencast of Grails' WebTest (maybe already outdated, I don't know)
grails.org/Grails+Screencasts
Is it possible to use those UI unit tests tools in a EJB 2.x application ? Or I need to mock every ejbs?
I listened to this talk and thought it was excellent! I would very much like to get a copy of the slides. Could you provide instructions on how to do that? Previous postings state that it is possible, but don't say how.
Thanks a lot,
Pat
Hi,
First of all , Thanks a lot Rod, for these wonderful slides :))
Thanks to company firewall policies, Not all of us in the team have privileges to view *.swf content.
So I used this Javascript snippet to view all Slides at once,
<script>
var slides=new Array('/resource/presentations/system-integration-testing-with-spring/en/slides/slide0.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide1.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide2.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide3.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide4.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide5.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide6.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide7.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide8.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide9.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide10.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide11.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide12.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide13.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide14.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide15.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide16.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide17.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide18.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide19.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide20.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide21.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide22.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide23.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide24.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide25.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide26.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide27.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide28.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide29.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide30.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide31.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide32.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide33.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide34.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide35.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide36.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide37.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide38.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide39.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide40.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide41.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide42.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide43.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide44.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide45.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide46.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide47.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide48.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide49.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide50.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide51.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide52.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide53.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide54.swf');
for(slide in slides){
//Browser can't Handle Too-many windows ;)
if(slide%20 ==0 && !window.confirm("There are Still "+(slides.length-slide)+" slides, Start Opening slide#"+slide+"?")){
break;
}
window.open("http://www.infoq.com"+slides[slide]);
}
</script>
[and then , If Using IE,go to "Temp Internet Folder" (or appropriate cache/store folder of browser) and copy swf files from there to Local Disk :))
]
Then shared these slides with my team here in my office, and Even they are very thankful to you Rod :)
Hi,
First Of All, Thanks a lot Rod for the wonderful slides & Presentation :)
Only Problems with the slides is the format i.e. *.swf. Not everyone has the privileges in My team to view flash content. [Thanks to company's Firewall policies].
So I have Used this scriptlet to view all slides at once, and then Copied cached slides [From "Temp Internet Folder" if using IE or any other browsers' store floder] to Disk. Then I shared it with my team. Now they can watch it offline and Even my colleagues and team members are very greatful to you ;)
--script-tag--
var slides=new Array('/resource/presentations/system-integration-testing-with-spring/en/slides/slide0.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide1.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide2.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide3.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide4.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide5.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide6.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide7.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide8.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide9.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide10.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide11.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide12.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide13.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide14.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide15.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide16.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide17.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide18.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide19.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide20.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide21.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide22.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide23.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide24.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide25.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide26.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide27.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide28.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide29.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide30.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide31.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide32.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide33.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide34.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide35.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide36.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide37.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide38.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide39.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide40.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide41.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide42.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide43.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide44.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide45.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide46.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide47.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide48.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide49.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide50.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide51.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide52.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide53.swf','/resource/presentations/system-integration-testing-with-spring/en/slides/slide54.swf');
for(slide in slides){
//Browser can't handle too many open windows ;)
if(slide%20 ==0 && !window.confirm("There are Still "+(slides.length-slide)+" slides, Start Opening slide#"+slide+"?")){
break;
}
window.open("http://www.infoq.com"+slides[slide]);
}
--end-of-script-tag--
Where are the slides? I would have it, thanks
Hi Guys,
When you release the MP3 and Slides to download like the recents presentations?
Thanks.
John Hugg discusses high volume transaction processing applications with high and low frequency profiles, and how VoltDB can be used for that purpose.
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Richard Kreuter and Kyle Banker on how to avoid classical RDBMS transactional systems by using compensation mechanisms, transactional messaging or transactional procedures.
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InfoQ spoke to the authors of Software Systems Architecture on a couple of new topics, the System Context viewpoint and Agile, which have been added to the second edition.
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