Monthly Archives: September 2011

Trendwatching on the HTTP Archive: Interesting findings about payload, social content, and core best practices

Findings include: Payload is growing, not shrinking, for big players like Google, Microsoft, and Yahoo. Facebook and Google+ third-party content is neck-and-neck. And 1 out of 4 of the top 100 sites still don't use core performance best practices.

Stuff The Internet Says On Scalability For September 30, 2011

By Todd Hoff

You deserve a HighScalability today: Tumblr > Wikipedia Potent quotables: @tokutek : Yelp generates close to 400 GB of compressed logs per day according to @petersirota of Amazon #Strataconf #BigData. More at Fr...

Why you should care about Google’s changes to its mobile AdWords algorithm

By Josh Bixby

Last week, when Google announced that your mobile site's performance is now a factor in how Google determines its AdWords quality, it didn't get as much buzz as its 2010 announcement that site speed would affect Google search ranking. But it should have. Here's why.

Pursue robust indefinite scalability with the Movable Feast Machine

By Todd Hoff

And now for something completely different, brought to you by David Ackley and Daniel Cannon in their playfully thought provoking paper: Pursue robust indefinite scalability, wherein they try to take a fresh look at neural networks, starting...

Synchronising access to the Facilita Shared Data Server

By facilita

The Facilita Shared Data Server (SDS) is a useful tool for sharing data between virtual users or for persisting data between test runs. For most usage, especially when you are using the SDS lists as FIFO or LIFO queues, there is generally no need to limit access to a single VU at a time....

Creating Custom Metric Graphs with HP Loadrunner

By Richard Pal

This post will describe how to create your own custom metric graphs in HP Loadrunner. Using the Analysis tool you can view the standard metrics of a Load Test. But you can also use the VuGen scripts to report your own numbers as ‘User Data Points’ and feed them into the Analysis component. Let’s assume...

Use Instance Caches to Save Money: Latency == $$$

By Todd Hoff

In the post Using memcache might be free, but it's costing you money with instance pricing! Use instance caches if possible made on the Google App Engine group, Santiago Lema brings up an oldie but a goody of an idea that was once used to im...

17 Techniques Used to Scale Turntable.fm and Labmeeting to Millions of Users

By General Chicken

In How to launch in a month and scale to a million users, Joseph Perla, Former VP of Technology and founding team of Turntable.fm, shares techniques he used to build and quickly scale his startups. The post is very well written and a must read. Here a...

Pacing Loadrunner User Scenarios

By Richard Pal

Configuring the virtual user script with the number of virtual users

This article will describe the different options for pacing available within Loadrunner and outline how they can be used. In the pervious blog we calculated the necessary number of virtual users to produce the desired load. The previous formula relied on the length of the user scenario. How does the load generator execute the script? The generator...

Stuff The Internet Says On Scalability For September 23, 2011

By Todd Hoff

I'd walk a mile for HighScalability: 1/12th the World Population on Facebook in One Day; 1.8 ZettaBytes of data in 2011; 1 Billion Foursquare Checkins; 2 million on Spotify; 1 Million on GitHub; $1,279-per-hour, 30,000-core cluster bui...