MERN
Build MongoDB, Express, React and Node into one connected stack, with backend and frontend in every repo. You'll start from single models and components and work up to small working applications - portals, consoles, dashboards. Along the way you'll handle what only appears once the two halves meet: relationships, access rules, server-driven lists, and the performance problems that arrive with scale.
React 19
Express 5
Node 24Mongoose Schemas & Models
Design the shape of your data before anything else touches it. You'll define schemas with the right field types, defaults and validation, embed related records where they belong, and control exactly what the API sends back - so bad data is rejected at the model rather than caught three layers later.
Marketplace Listing Schema
Course Catalogue Schema
Workout Session Log
Streaming Series Catalogue Model
Express REST Endpoints
Put your data behind a URL that behaves the way clients expect. You'll lay out routers and route parameters, nest child resources under their parents, return the right status code for every outcome, and handle errors in one place instead of wrapping every handler - so a bad id gets a 400, not a 500.
Library Loan Routes
Course Routes — Nested Lessons API
Job Posting Updates
Store Inventory API
Querying & Data Shaping
Ask the database precise questions and send back only what the screen needs. You'll build search and filters that stack, project away heavy fields, sort and page with stable results, and count without loading rows - so the response stays small and the same request returns the same order twice.
Restaurant Search Filter
Article Feed Projection
Hotel Room Availability
Bookstore Browse API
Fetching & Rendering in React
Wire the screen to the server and make it behave under real conditions. You'll drive the UI from a single status loading, error, empty, populated - instead of booleans that disagree, fetch inside effects and abort the in-flight request on cleanup, ignore stale responses so a slow reply can't overwrite a newer one, and render lists, filters and forms that stay in sync with what the API actually returned.