Can you query Redis?

How can I access my Redis data?

To start Redis client, open the terminal and type the command redis-cli. This will connect to your local server and now you can run any command. In the above example, we connect to Redis server running on the local machine and execute a command PING, that checks whether the server is running or not.

Is Redis a SQL database?

Redis is an open source, in-memory key-value data structure store, which can be used as a database, cache, or message broker. It's a NoSQL database.

Is Redis reliable as a database?

Redis is actually a very reliable engine to store data, as long as you keep in mind its design principles. (the Aphyr post is great with that). The replication and cluster modes can add additional complexity (but of course mysql master-slave or master-master have their own risks and complexity as well.)

Can Redis be used as a relational database?

One thing off hand is that Redis isn't a relational database. If you're going to be needing an SQL "JOIN" then you won't want to use Redis, nor any other non-relational database. Redis is faster though than most relational databases.