MongoDB is a flexible, document-oriented NoSQL database that stores data in JSON-like documents. This guide covers fundamental operations including database and collection creation, as well as the complete spectrum of Create, Read, Update, and Delete (CRUD) operations for documents. Managing Databas...
SET 127.0.0.1:6379> set user_id 42 OK GET 127.0.0.1:6379> get user_id 42 #Retrieve all keys 127.0.0.1:6379> keys * item3 item2 item1 SET (Update) 127.0.0.1:6379> set user_id 99 OK 127.0.0.1:6379> get user_id 99 DEL 127.0.0.1:6379> del user_id 1 127.0.0.1:6379> get user_id (nil)...
Connecting to the Redis CLI: $ redis-cli 127.0.0.1:6379> PING PONG String Operations Store and retrieve simple values: 127.0.0.1:6379> SET metrics:page:home 100 127.0.0.1:6379> GET metrics:page:home Atomic counter operations: 127.0.0.1:6379> INCR metrics:page:home 127.0.0.1:6379> DECR...
Introduction to NoSQL and Redis The evolution of database technologies in the big data era has led to the emergence of NoSQL databases as essential components of modern application architectures. Traditional relational databases face significant limitations when handling massive volumes of unstructu...
Connecting to MongoDB Establish database connnection using the Node.js driver: const { MongoClient } = require('mongodb'); const databaseUrl = 'mongodb://localhost:27017'; const client = new MongoClient(databaseUrl); async function connectToDatabase() { try { await client.connect(); console.log('Dat...
Download and install the appropriate Redis distribution for your operating system from the official releases page. Once installed, launch the Redis CLI to verify the connection: redis-cli Validate the server responsiveness: 127.0.0.1:6379> PING PONG The PONG response confirms successful connectiv...