To checkout how big certain keyspaces are. INFOįor memory only, type the command below. Then to check out how big your database is or cpu information. To tell how big your database is or just to see certain information about your Redis setup, try out some of the following commands. Incrementing, Deleting, and Length of Hashes HINCRBY user:1 id 123 # => (error) ERR wrong number of arguments for 'hgetall' command You can also hash them out all at once HMSET user:1 name 'Sam' email => OK Setting hashes in redis HSET post:12 creator 'Sam' # => nil - since there is no 9 character key # => 95 - will tell you how many seconds are left until it expires If you are using redis for caching, you can do a check to see if it returns a 1 or 0 and then either GET or SET based off the response. Note that redis will not return nil if it doesn't exist.
There is a more efficient way to check if a key already exists than by trying GET var and seeing if it returns nil or a value. With Redis, you can delete several records at once in one command, and it will return the number of records deleted afterwards. You can also increment and decrement the count using redis commands INCR post_thumbs_up_count:44 To track additional information such as a post like, you can assign the post id to the variable using the following strategy using SET var_name count. Using redis to track additional information To store a record in redis, you will do the following SET my_var 200Īnd then to retrieve the value of my_var, you will type GET my_var If you try to grab a record that doesn't exit, redis will return nil instead of an error. Redis has two main commands as a NoSQL database and along with that, it is extremely fast. You can connect to redis typing redis-cli in the terminal. If it shows up, you are set to go! You can also check for a PONG response by using: redis-cli pingįYI, Redis should automatically run in the background upon closing the terminal, if it doesn't, you can start it as a background process by using nohup redis-server &. Run this command to install Redis from the CL. If it replies “PONG”, we are ready to rumble!!! Ubuntu Redis's configuration file is located here. Stop Redis from starting automatically when your computer starts. Start Redis server using configuration file. ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents To initiate Redis when your computer starts, run the following command. brew install redisĪfter installing it, you will see some warning signs, just ignore those and move on with the rest of the tutorial.
Brew install redis update#
If you’re using an Ubuntu distribution of Linux, you can install Redis using the APT-GET repository.įirst, you’ll need to update the system update manager package.Installing and Using Redis on Ubuntu/Mac OS X We’ll provide detailed instructions on that process later in our tutorial. Alternatively, you can use Homebrew on macOS to install it.
Brew install redis download#
If you’re running Windows or macOS, you can install Redis by clicking on the download link for the interactive installer. Prerequisitesīefore you proceed with your Redis installation, make sure you have some experience using the sudo privilege to log into your system. In this article, we’ll provide step-by-step instructions to install Redis on macOS and various distributions of Linux. The steps required for the installation will vary somewhat depending on the operating system you’re using on your local machine. If you’re just getting started with Redis, installing this in-memory data store is the first task you’ll need to accomplish.
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