We can increase the response time by caching the data that is fetched frequently and responding to client requests with cached data rather than looking into the database. The user wants an application to be fast. In any application, the response time is an important factor in the success of that application. crby(key,value) - to decrement integer value against key by given value cr(key) - to decrement integer value against key by 1 Redis.incrby(key,value) - to increment integer value against key by given value Redis.incr(key) - to increment integer value against key by 1. Redis.expire(key, time)- to set expiry time of a key Redis.exists(key) - boolean response depicting if key exists or not There are also operation methods such as: Note: Redis doesn’t support nested objects. Redis.get( 'this is key', function ( err, reply) StringĪ string key value can be simply stored as 1 Redis offers various data structures and all methods related to them can be accessed under the ‘redis object we created just above as thod(). Redis data structures and methods associated with them. Now before we start working on Redis, let’s understand the types of data structures it uses and methods associated with them. This will yield output in command line as: Next we are also logging “connected to redis!” when we acquire connection successfully. If you are using the cloud version of Redis or separate host then you can pass those parameters as Notice I have called createClient while importing the Redis module with no parameters, because by default it will use localhost 6379 as host and port respectively. Here we are setting up our server and also connecting to the Redis server running on our system. 1Ĭonsole.log( "Server for project redis-intro live at port 8080 ")
#MAC INSTALL REDIS CLI INSTALL#
Redis (npm package to manage Redis operation inside a node application)Īlso install nodemon (npm module to rerun server every time we make changes to it).Ĭreate main server file app.js and set up server to listen at port 8080. Now we need to install these npm modules, Project setup:Ĭreate project directory and initiate npm in it.
Now let’s set up our node.js application. If you want to try Redis command line tool, then the command is: After installation is complete, you can run redis-server by executing this command. Wget https: ///releases/redis-6.2.4.tar.gz
Open terminal window, and run these commands for installation.
#MAC INSTALL REDIS CLI MAC#
Installing Redis server on Linux and Mac is simple.
#MAC INSTALL REDIS CLI HOW TO#
If you are unaware of the installation process of nodejs then you can refer to How to install node.js. Redis is used for the following purposes:Įxplanation of various data structures and methods associated with them Redis is utilized in situations where quick retrieval and delivery of data is needed. Also known as data structure storage, a key can contain various data structures like strings, lists, sets, hashes, etc… Redis is a well-known, efficient in-memory store used to house key-value pairs.
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