Earlier quoted context omitted.
>(but can you actually run a modern app stack on just 128 MB of RAM?) C/Golang/Lua/Vala/SBCL/Ada/Pascal and an embedded datastore like bdb! Why in my day we used to write little apps with C and bdb that used less than 5mb of memory! (Sqlite didn't exist yo.) Heck these days you get (ENTERPRISE) choices like LevelDB and BangDB. Edit: Who wants to have a datastore-backed c10k contest on prgmr machines? :D
Ha, I'm aware that if you're careful, you can do it, but I was more thinking of a python or ruby stack with MySQL (or whatever) that most people would use :).
I was trying to be lean.
Ruby users are quiche eaters anyway. Real programmers write their code in Fortran and persist to a hierarchical database on a mainframe.