How to write login controller in MERN backend

In this comprehensive guide, we'll walk you through how to write a login controller in a MERN backend. This video tutorial is part of our ongoing backend series, where we delve into creating robust authentication systems. Unfortunately, due to a technical mishap, some of our previous content was lost, but we're committed to re-recording it for you. The tutorial covers key steps, including setting up routes, generating access and refresh tokens, and validating user credentials using Mongoose in Node.js. We also explore best practices like using async/await for database queries, handling errors gracefully, and securing tokens with HTTP-only cookies. This hands-on approach is ideal for those looking to deepen their understanding of JavaScript and backend logic in the MERN stack. By the end of this session, you'll be better equipped to manage user authentication in your own applications. Don’t forget to join our vibrant programming community on Discord, where over 50,000 developers are ready to help. Stay tuned for the next video, where we'll cover logout features and refreshing tokens. Remember to leave a comment or share this content on social media to support our efforts! https://postman.com For resources and community visit https://chaicode.com Welcome to a youtube channel dedicated to programming and coding related tutorials. We talk about tech, write code, discuss about cloud and devops. That’s what we do all day, all year. Get all source code for react application: https://github.com/hiteshchoudhary/react-english All source code is available at my Github account: https://github.com/hiteshchoudhary Our Open-Source Project is here: https://freeapi.app Join me at whatsapp: https://hitesh.ai/whatsapp for community discord: https://hitesh.ai/discord Instagram pe yaha paaye jaate h: https://www.instagram.com/hiteshchoudharyofficial/ Learn React with 10 projects: https://www.youtube.com/watch?v=eCU7FfMl5WU&list=PLRAV69dS1uWQos1M1xP6LWN6C-lZvpkmq Learn Docker: https://youtu.be/rr9cI4u1_88?si=fSK00PNOt0gqBXp6 Learn Kubernetes: https://www.youtube.com/watch?v=7XDeI5fyj3w How does a browser works: https://youtu.be/5rLFYtXHo9s?si=UW1HrwGUzkk4E7qh How nodejs works: https://youtu.be/ooBxSg1Cl1w?si=Ks6Wih1smJZSDz4V Learn Redux-toolkit: https://www.youtube.com/watch?v=pX0SBJF01EU Learn NextJS: https://www.youtube.com/watch?v=iPGXk-i-VYU&list=PLRAV69dS1uWR7KF-zV6YPYtKYEHENETyE Learn Typescript: https://www.youtube.com/watch?v=j89BvWz8Eag&list=PLRAV69dS1uWRPSfKzwZsIm-Axxq-LxqhW Learn Javascript: https://www.youtube.com/watch?v=2md4HQNRqJA&list=PLRAV69dS1uWSxUIk5o3vQY2-_VKsOpXLD Learn React Native: https://www.youtube.com/watch?v=kGtEax1WQFg&list=PLRAV69dS1uWSjBBJ-egNNOd4mdblt1P4c Learn Zustand: https://www.youtube.com/watch?v=KCr-UNsM3vA&list=PLRAV69dS1uWQMXekDgw7fRAsHmsbKWkwu Learn Golang: https://www.youtube.com/watch?v=X4q1OM0voO0&list=PLRAV69dS1uWSR89FRQGZ6q9BR2b44Tr9N