Download, install and start an LDB-enabled Redis server (right now, that's the release candidate for v3.2).
Download and install ZeroBrane Studio v1.20 or above - the project is entirely free but if you benefit from using it, please consider supporting Paul's project.
Get yourself the IDE ZeroBrane Studio interpreter plugin for Redis from the ZeroBranePackage repository, aptly named redis.lua.
To install the plugin for all users, drop it in the packages directory of your ZeroBrane Studio installation (e.g. /opt/zbstudio/packages/), or put it in your ~/.zbstudio/packages directory to savor it alone.