It's also worth noting that the one queue Arcieri proposed might have been interface-compatibile --- MemcacheQ --- is a single-developer side project written in C. Arcieri is "completely confused" by the fact that that Twitter didn't adopt this as the core of their service.
This is a straw-man argument. MemcacheQ is a straightforward mash-up of two very stable software stacks.. memcached and BerkeleyDB. The lines of code to accomplish it are trivial. So what.
