One example from my line of work that could conceivably translate to web-land would be parsing numbers. I wrote a version of double.Parse() with less features f

One example from my line of work that could conceivably translate to web-land would be parsing numbers. I wrote a version of double.Parse() with less features for an order of magnitude speedup. The program was doing data analysis on a bunch of CSV files, and just parsing the files was way slower than EBS I/O.