according to antirez, redis does not (and will not) support LuaJIT. Even though at one point there was someone who had got it working. From experience I know that replacing Lua with LuaJIT, even in a statically compiled project, is quite easy. The reasoning is of course that lua code for redis shouldn't have to do a lot of processing, and thus won't benefit from the extra performance (it also shouldn't run long enough for the JIT to come into action).