I'm trying to get Redis to allow EVAL (http://redis.io/commands/EVAL) to make HTTP requests.

Two modules: LuaCURL and Luasocket give this ability. The Redis source code has a directory with additional modules (such as cjson) http://download.redis.io/redis-stable/deps/lua/src/, I tried adding luacurl.c but I recieved error after error. I have managed to compile it enabling os.execute - by editing scripting.c - which allows me to run the curl command but that is a bad solution.

How do I compile HTTP requests in Redis's Lua?

Presumably the easiest way to do this would to be have a standalone luasocket.so file, but I'm not sure how to do that.


No worries, all I required was a nights sleep to have a fresh mind.

I downloaded http://files.luaforge.net/releases/luacurl/luacurl and move the luacurl.c into the /deps/lua/src/ folder and edited line 23 from

#include <lauxlib.h>


#include "lauxlib.h"

and then in /deps/lua/src/Makefile (Lua's makefile, not Redis's) go to line 30 and find


add "luacurl.o" spaced next to it like so

lua_cjson.o luacurl.o

and then in /src/Makefile (Redis's makefile, not Lua's) change line 54 from



FINAL_LIBS=-lm -lcurl

Finally, make sure you have installed "yum install curl-devel" and then compile it.

Keep in mind that no other client can execute commands whilst the server is busy with Lua scripts.


Installing custom Lua modules in Redis requires recompiling Redis from source, using a procedure like user3786834 laid out. If you really need to use some particular module, that might be your only choice.

However, if your library uses only Lua code (no C code), the simplest option, which also increases your application's portability, might be to include that module's source code directly into your EVAL script.

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