In this recipe, you will learn how to add the Redis downloadable cartridge to your OpenShift application. Redis is an open source, advanced, NoSQL key value data store, written in the ANSI C programming language. It is an in-memory data store but also writes to the disk for durability.
To step through this recipe, you will need the
rhc command-line client installed on your machine. Refer to the Installing the OpenShift rhc command-line client recipe in Chapter 1, Getting Started with OpenShift for details. Also, we will use the application created in the Creating an OpenShift application using the rhc command-line client recipe in Chapter 3, Creating and Managing Applications.