Is lua called from redis interpretted or compiled?

Question

Redis supports lua scripting. Using eval command, we can execute a lua script in redis. Is the lua script compiled or interpretted when redis calls a lua script?

Canonry

What do you believe the difference between those two would be in this case? What question are you really trying to ask? – Culley

Answer 1

Lua scripts sent to the Lua library for execution are always compiled to Lua VM instructions before execution. These instructions are then interpreted by the Lua VM.

Hayott

Here intro2libsys.info/introduction-to-redis/lua-scripting it is written that redis has a lua interpreter. Does it mean that when redis makes a call to execute a lua script, it is interpretted and not compiled? – Canonry

Redis wraps your script into a function and uses luaL_loadbuffer as you can see here. – Teuton

Good to know actually! And the compilation should be done only once as you send only SHA1 for next lua calls. – Phaidra