Good subject Gary.

As a day job I work with embedded devices, hell, my first commercial device I sold, and sold 100,000+ units of, had 512k of programmable space, which, believe it or not we rarely filled.

I think common sense prevails. If your restricted for space, use shorts instead of int's if you can, if you can cut down on code by modularizing it the do it (reuse is a big win all round), always look to do code in a more efficient (but readable!) way even if the code works already.

I probably should look at the code to liqbase and see if I can give you some pointers