Google App Engine

Google announced Google App at Campfire One.
You can see their presentation at YouTube:
http://www.youtube.com/watch?v=3Ztr-HhWX1c
The movie is kindly prepared and easy to follow.

Google App Engine is a SaaS style Web application platform for developing and running Web applications. (Currently it is a 'preview release' and only available to the limited number of developers.) Python is the language for programming on the platform and the platform comes with APIs (and library implementation) for Datastore, Users, URL Fetch, and Mail, in addition to those which are already available with stock Python.

This is the ultimate style of agile web development with "zero" start-up cost as hosting service itself is also included in the platform. While lots of other companies are trying to do the similar thing, you know, it is Google, which is worth keeping our watch on.

Apache Tomcat Performance

Frank Ziglar reports on the peformance of Tomcat, one of the most used Sevlet engines in the world (Some statistics can be found here), on Window and Linux platforms.

• Comparing Apache Tomcat Performance Across Platforms, Sys-Con LiNUX, By Frank Ziglar, Apr 28, 2006
  — They have measured performance information to distinguish the differences between the Windows and Linux platforms. Given comparable hardware we found the performance differences almost trivial.

The original (full version?) report, devided into two parts, is available at the website of Web performance, Inc.

• Part 1: Performance and Distinct Error Handling under Memory Load
• Part 2: Performance and Distinct Error Handling under Computational Load

JBoss Web Server = Tomcat Native / APR

JBoss Web Server is built on Apache Tomcat and includes Apache Portable Runtime (APR) and Tomcat native technologies (Tomcat Native) to achieve good scalability and performance. It is a new open source project that will provide enterprises with a single, high-performance deployment platform for Java Server Pages (JSP) and Java Servlet technologies, Microsoft ASP.NET, PHP and CGI.

• http://www.jboss.com/products/jbossweb

They say that it can excess Apache HTTP Server. It is interesting how much it really does.