These Cacti templates extract and graph a huge variety of information about MySQL, giving you very detailed insight into your server's performance over time. The InnoDB graphing is particularly detailed.

(tags: tools templates template sysadmin rrdtool performance mysql monitoring graphs cacti)

Apache Hadoop is ideal for organizations with a growing need to store and process massive application datasets. Hadoop: The Definitive Guide is a comprehensive resource for using Hadoop to build reliable, scalable, distributed systems.

(tags: mapreduce hadoop datamining books oreilly)

I am using Eclipse and Maven for a number of Java projects. For our development we use "Run Jetty Run" to launch a Jetty servlet really quickly. I'd like to use this combo for JRuby + Rails development - leveraging many of the benefits of these tools that I've worked hard on learning.

(tags: rails jruby jetty rubyonrails)