PostgreSQL (Relational) is preferred for handling the complex links between users, posts, and comments. Some use MongoDB for its flexibility with post content.
Likes, comments, and "typing" indicators that update instantly without refreshing the page. fbclone
Secure login/signup systems, often utilizing OAuth (Login with Google/GitHub). fbclone
Socket.io or Pusher . These are essential for making notifications pop up the second someone likes your photo. fbclone
The Rise of the "FBClone": Why Building a Social Network from Scratch is Trending