GraphQL with MERN

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Training Key Features

  • GraphQL schema design and resolver implementation
  • Efficient query/mutation handling with input types and DataLoader
  • MongoDB integration with aggregation inside resolvers
  • Pagination strategies (cursor-based, Relay style)
  • Production-ready deployment with persisted queries and CDN caching
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What will be Cover ?

Module 1 – GraphQL Fundamentals
  • Schema language
  • Resolvers
Module 2 – Apollo Server Setup
  • Express integration
  • Schema stitching
Module 3 – Queries & Mutations
  • Input types
  • N+1 problem
  • DataLoader
Module 4 – Subscriptions
  • WebSocket setup
  • Presence updates
Module 5 – Mongo Integration
  • Aggregation inside resolvers
Module 6 – Apollo Client
  • Cache policies
  • Normalized store
Module 7 – Pagination
  • Cursor-based
  • Relay style
Module 8 – Auth
  • Context
  • Directives
  • Field-level rules
Module 9 – Error Handling
  • Error masking
  • Extensions
  • Tracing
Module 10 – Deployment
  • Persisted queries
  • CDN
  • Caching
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Course Detail

Benefits: This course equips learners with the skills to design and build GraphQL APIs connected to MongoDB and consume them efficiently in React applications. Students will master schema-first development, write resolvers with performance in mind, and implement queries, mutations, and subscriptions. The course emphasizes real-world challenges such as N+1 query prevention with DataLoader, robust error handling, caching, and pagination strategies. Learners will also gain experience in securing APIs with context and directives, integrating authentication and authorization at field-level resolution. Beyond development, the course prepares students for production by teaching persisted queries, CDN caching, and deployment practices, ensuring high performance and scalability in professional environments.