Archive for category 'Links'

Why Test Automation Costs Too Much

Tuesday, 20. July 2010 17:27

I got a pretty nice link today. Check out that short article about the usual obstacles when trying or applying test automation: Why Test Automation Costs Too Much. Elisabeth covers the aspects of disconnected teams and the often practiced sharp distinction between programmers and testers pretty well.

Bottom line: the reason test automation costs so much is that it’s done in a silo far removed from the development effort.

Buffered from the consequences of design decisions that decrease testability, the developers continue to create software that’s nigh onto impossible to automate.

And isolated from the technical expertise of how the software was constructed, the test automation specialists are in a situation where they cannot help but be both inefficient and ineffective.

Enjoy reading!

Category: Links, Quotations, Testing | Comments (0) | Author: Rene

Load Testing Web Applications – Do it on the DOM Level!

Tuesday, 8. June 2010 11:59

We published the article “Load Testing Web Applications – Do it on the DOM Level!” in the 10th issue of the testing magazine “Testing Experience“. This issue is all about performance testing. The article discusses our experience in web load testing on HTTP level versus HTML/DOM level.

There is a free PDF version of the magazine that requires an online registration, where your e-mail address and country are required fields.

Enjoy reading!

Category: Links, Performance, Testing, XLT | Comments (0) | Author: Ronny

Speed matters for your ranking

Sunday, 30. May 2010 17:00

Nati Shalom discusses in one of his latest blog entries the changes Google made to its page ranking algorithm and how it influences your Google page ranking.

Last month Google added Website speed to its site ranking algorithm: It’s Official: Google Now Counts Site Speed As A Ranking Factor… The rationale behind this move by Google is fairly straightforward:

Slow web sites lead to a poor user experience, and therefore should not appear at the top of the search list even if they contain relevant content.

This emphasizes once more the influence of performance on your daily business. A simple change to your site can now affect your entire page ranking and how users find your content. Continuous performance testing is now even more important than ever.

Category: Links, Performance | Comments (0) | Author: Rene

One digit version numbers only, please!

Sunday, 16. May 2010 17:02

Just read about a nice small software problem at Opera. Their latest browser is version 10, but they couldn’t continue to use the version number in the user agent string, because some web sites try to identify the agent version and fail with 2 digit version numbers. Seems to be similar to the famous Y2K problem, but now it is a BVN problem – a browser version number problem.

“…It appears that a considerable amount of browser sniffing scripts are not quite ready for this change to double digits, as they detect only the first digit of the user agent string: in such a scenario, Opera 10 is interpreted as Opera 1. This results in sites mistakenly identifying Opera 10 as an unsupported browser, thereby breaking server, as well as client-side scripts…”

Read more at Dev.Opera.

Category: Links, Software Development, Things went wrong | Comments (0) | Author: Rene

Some nice reading about HBase

Tuesday, 16. March 2010 21:35

HBase LogoIf you want to stay in touch with cutting-edge technology in terms of scalability of databases, high traffic sites, and large storage volumes, you should read these two articles on the new hstack.org blog.

Cosmin Lehene wrote two excellent articles on Adobe’s experiences with HBase: Why we’re using HBase: Part 1 and Why we’re using HBase: Part 2. Adobe needed a generic, real-time, structured data storage and processing system that could handle any data volume, with access times under 50ms, with no downtime and no data loss. The article goes into great detail about their experiences with HBase and their evaluation process, providing a “well reasoned impartial use case from a commercial user”. It talks about failure handling, availability, write performance, read performance, random reads, sequential scans, and consistency.

(via High Scalability)

Category: Java, Links, Software Development | Comments (0) | Author: Rene

Ein empfehlenswertes Blog – Java Concurrency

Wednesday, 3. February 2010 21:20

Jeremy Manson schreibt in seinem Blog über Java Concurrency und interessante Dinge, die in einer JVM passieren, aber meist niemanden interessieren.

Jeremy ist bei Google angestellt und in viele JSR-Prozesse rund um das JDK involviert.

Category: Java, Links | Comments (0) | Author: Rene

XLT ist gelistet

Friday, 29. January 2010 19:21

Xceptance LoadTest wurde in die Liste der Testtools auf SoftwareQAtest.com aufgenommen. Wir freuen uns sehr über das entgegengebrachte Interesse.

Category: Links, XLT | Comments (0) | Author: Rene

Ist die Geschwindigkeit ein Teil des Pagerank?

Thursday, 21. January 2010 13:51

In diesem Interview mit SEO marketing expert Amanda Watlington ist die Rede davon, dass Google die Geschwindigkeit einer Website in die Platzierung im Suchergebnis einfließen lässt.

Google is now using page loading speed in their ranking algorithm. The engineering of some sites can make this a difficult problem to fix quickly, so webmasters should study the problem now with speed detection tools such as YSlow and Google Page Speed.

Das wäre nur konsequent von Google, da bereits die Webmaster-Tools in der Google-Administration die Seitengeschwindigkeit ausweisen. Zudem profitiert Google von schnellen Webseiten indirekt, da der Aufwand für die Indizierung sinkt bzw. die Updatezyklen kürzer sein können. Damit steigt auch die Aktualität von Suchergebnissen und das verbessert die Wettbewerbssituation für Google.

Wir freuen uns natürlich auch darüber, weil damit nicht zuletzt auch die Bedeutung von Last- und Performancetests steigt.

Category: Links, Performance | Comments (2) | Author: Rene

Google ist mehr als Software

Tuesday, 10. November 2009 23:36

Heute habe ich einen schönen Artikel bei CNET gefunden: Google shifts software value to operations, away from IP. Der Artikel führt prima aus, wie sich Google definiert und warum Google große Teile seiner Software einfach mal gratis weggeben kann:

Google is what Google does with the software, and not the software itself.

Einfach mal lesen und sich seine eigene Meinung dazu bilden.

Category: Links, Software | Comments (0) | Author: Rene

Andere Blogs rund ums Testen

Sunday, 25. October 2009 22:39

Natürlich gibt es noch andere Blogs, die sich mit Testen und Qualitätssicherung beschäftigen. Einige davon möchte ich heute mit einem kurzen Kommentar vorstellen:

  • DevelopSense von Michael Bolton (nicht der Sänger). Für Michael ist der Fakt wichtig, dass ein Tester viel wertvoller ist, als jede Automation. Das Hirn eines Testers ist sein Werkzeug. Er nennt es auch: Checking is not testing.
  • James Bach vertritt eine ähnliche Meinung und verurteilt die blinden Bestrebungen, alles unkontrolliert zu automatisieren. Sein Kernbotschaft dreht sich um Exploratory Testing. Das intuitive, aber nicht zufällige Testen.
  • Eric Jacobson legt sich nicht auf Gebiete fest, sondern kommentiert alles Querbeet.
  • Nicht zu vergessen das Google Testing Blog. Hier berichten Google Tester aus ihrer täglichen Arbeit und den Herausforderungen von großer Software.

Wer kennt weitere empfehlenswerte Blogs?

Category: Links, Testing | Comments (0) | Author: Rene