I wrote an article about how VisualVM helped fixing a problem I had on my day job at TTY Internet Solutions some time ago. The CPU load on a webserver became to high and the performance of the webapplication dropped ofcourse.
Now, with JMX (Java Management Extensions) you can (remotely) connect to a JVM (Java Virtual machine) and take a look at what’s going on in that JVM. A great tool to do this is VisualVM. In the article I explain how we setup JMX on the remote server, how we connected VisualVM, how we read the info VisualVM gave us and how it helped us find and fix our bug.
… Yes, DSP (Digital Signal Processing) and audio stuff. About two years ago I worked on a DSP platform in Java which became to big of a project to finish.
Water ripple FX with Canvas and Javascript
It’s not new and it was done many, many times with Java Applets: the Water Ripple effect! Yeay! I created one some years ago since I just like to play with it so much. Nowadays we have the HTML5 canvas but also fast javascript engines . I still wanted to experiment with the HTML5 canvas anyway so I decided to port my applet to a canvas.
Check the Water Ripple Effect here!
In this article I will show the effect, explain how the effect works and also how you can reuse the highly configurable javascript classes. You could use it for nice cheesy banner effects or just to impress your site visitors
. Anyway… lets check it out! Read More »