Partial Sorting

http://en.wikipedia.org/wiki/Partial_sorting

and its distributed version: http://www.eng.tau.ac.il/distalgs/distalgs%20papers/selection-ppt.pdf

Web Frameworks

http://en.wikipedia.org/wiki/Comparison_of_web_application_frameworks

Further, have a look at these graphs for the usage of a variety of lightweight web frameworks out there.

Java based web frameworks:
I have some experience with a 'heavyweight J2EE' application and was thus interested in knowing the lightweight web frameworks out there. (http://docs.jboss.com/books/lightweight/ch01.html). Also found this http://www.it.uom.gr/teaching/applicationsIT_1/lectures/ which was useful as a intro to Java based web frameworks. Also look at http://www.it.uom.gr/teaching/applicationsIT_2/

Useful Linux debugging tools

https://oldpapyrus.wordpress.com/tag/linux-debugging-strace-ltrace-vmstat/ which points to

http://www.dedoimedo.com/computers/linux-system-debugging-super.html and
http://www.cyberciti.biz/tips/linux-shared-library-management.html

Query Rewriting using Views

Have a look at this thesis to get an idea as to how a SQL query can be rewritten given that some views (named queries) of the database are already available. 

Simpson's Paradox

Have a look at this paradox called Simpson's paradox. Again, one of those things, which are pretty obvious/straightforward/easily-deduced based on evidence, but seems counter-intuitive. The vector diagrams suggest why it works and why we dont catch the problem. (See how the second blue vector is "long" even though it has less rate than the second red vector)

Big Data and Relational Databases

http://dba.stackexchange.com/questions/13931/why-cant-relational-databases-meet-the-scales-of-big-data

Note the discussion about the way the data is structured (whether it facilitates partitioning e.g. )