43. saving secret key(Environment variable)|REST API Development with Node.js and Express

In this whole series, we will develop REST API for managing notes including Registration, Login, LogOut system, with authorization and super admin functionality

✅creating Node Js Server and Handling Routes
✅variable path Routing
✅Organization of Routes
✅Middleware
✅Registration, Login, Logout systems
✅Dealing with restricted content
✅Role-Based Authorization (Super admin)
✅practical REST API architecture
✅Dealing with Hard-coded data
✅Working with database (MongoDB)
✅validating data(Both user and Database level)
✅ Different way of authentication
✅protecting password BY Hashing
✅JsonWebtoken token-based authentication
✅authorization
✅Handling errors
✅Deployment to Heroku