GraphQL Roadmap Introduction to GraphQL Basic of GraphQL Building GraphQL sever GraphQL schema basics GraphQL resolvers GraphQL clients GraphQL community trends Understanding Architecture Querying with GraphQL GraphQL server & client Evolution from REST to GraphQL Benefits of using GraphQL Limitations of GraphQL GraphQL Tooling Building GraphQL Schemas Types & Fields Arguments Variables Input Types Enums Interfaces & Unions GraphQL Operations Queries Mutations Subscriptions Handling Errors in GraphQL GraphQL Directives GraphQL schema stitching GraphQL using Node.js Setup GraphQL with Express GraphQL schemas in Node.js Resolvers in Node.js Error Handling in Node.js Testing GraphQL server in Node.js Performance Tuning in Node.js GraphQl & React.js Setting Up Apollo Client React data fetching queries React data updates mutations Real-time updates React Apollo client state management Testing React components GraphQl with Angular Apollo client and Angular Queries in Angular Mutations in Angular Subscriptions in Angular Optimistic UI in Angular Apollo client caching Angular GraphQl with Vue.js Vue Apollo plugin Queries with Vue.js Mutations with Vue.js Subscription with Vue.js Error handling in Vue.js Vue composition API & Apollo With Mobile Platforms GraphQl in iOS with Apollo Fetching data with queries in iOS iOS data updates mutations iOS real-time subscriptions GraphQL with Android Apollo Caching in Apollo Android Adavnced GraphQL Topics GraphQL Fragments Custom Scalar Types Understanding GraphQL introspect Cursors and Pagination File Upload with GraphQL GraphQL-Batch Processing Security in GraphQl Authentications & Authorization Rate Limiting GraphQL Security Best Practices Preventing denial-of-service Input Validation Error Handling Optimization & Testing Batch requests with Dataloader Caching N+1 problems and its solutions Performance Testing Unit Testing End-to-End Testing

For detailed explanations and theory, visit the Complete Java Roadmap Notes.