DSLs, OODBs, system internals and some Java stuff

DSLs:

• Groovy is perhaps the best language that lends itself for this purpose. Here's a nice (longish) introduction - Groovy.DSLs (from: beginner, to: expert) 
• A simpler pseudo DSL based on regex - Jbehave, primarily used for Behaviour-driven development in Java

A good article by (The) Martin Fowler on how to develop quality code - for beginners.

A few good articles I came across recently on operating systems, disks, networking:

• http://scale-out-blog.blogspot.com/2011/01/virtual-ip-addresses-and-their.html 
• http://blog.tsunanet.net/2010/11/how-long-does-it-take-to-make-context.html 
• http://duartes.org/gustavo/blog/category/internals/ 
• http://th30z.blogspot.com/2011/02/linux-cgroups-memory-threshold-notifier.html

OODBs - NoSql's grandpa and the forgotten cousin of SQL. Haven't even heard of OODBs? Here's a 4 year old article but still worth reading.

Java tidbits:

• NIO ByteBuffer related memory de-allocation problems
• The problem
• Also a documented Sun/Oracle bug
• Solution 1: https://github.com/toddlipcon/hadoop-lzo/commit/91cf4d921f1f247bf764f3d1ef5df831ca8f465f 
• Solution 2 also done by FileChannelImpl.unmap(xx) - line 724
• ObjectOutputStream's ClassLoader limitation
• The many uses of Sun/Oracle Java's Unsafe API and a clean way to get hold of it