Mongodb Lessons

Andrew Kwizera — Sun, 17 Jul 2022 20:22:13 +0000

This week i learned about mongodb, different commands that can be used in the mongodb shell (mongosh). for example;
show dbs //for showing databases
use <name_of_database> //to switch to a specific database
show collections //displays collections in the database
db.user.insertOne({"name": Jack}) //inserts one document to user collection
db.user.find({}) //to retrieve all documents in the user's collection

Express Middlewares

Andrew Kwizera — Mon, 11 Jul 2022 20:22:58 +0000

Middleware functions are functions that have access to the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle.

Example:

const logger = (req,res,next) => { //whatever piece of code written here can be accessed by other functions //always the next function has to be called next() }

DEV Community: Andrew Kwizera

Mongodb Lessons

Express Middlewares