GraphQL Complete Masterclass (46 Chapters, 13 Phases)
📌 Covered in this course:
What is GraphQL? · GraphQL vs REST · Project Setup & Folder Structure · Schema SDL & Root Types · Scalars, Objects, Enums & Input Types · Interfaces & Unions · Queries, Arguments & Variables · Fragments & Directives · Resolver Signature & Context · Nested Resolvers & DataLoader · Mutation Basics & Payloads · Subscriptions & Real-Time · Offset & Cursor Pagination · Auth & Security · SQL & MongoDB Integration · Apollo Client & Federation · Testing, Codegen, Projects & Quiz
Welcome to Our Compiler's GraphQL Complete Master Course. GraphQL is the modern query language and execution engine empowering client applications to request exact data requirements. This comprehensive 46-chapter bootcamp guides you through GraphQL schema design, SDL types, resolvers, DataLoader optimization, JWT authentication, Apollo Client, Federation subgraphs, and testing production GraphQL servers.
🎯 Ready to Master GraphQL API Architecture?
Choose where to start: explore GraphQL introduction, basic queries, mutations, DataLoader, subscriptions, cursor pagination, or platform API project:
📚 Master Course Curriculum
Phase 01
GraphQL Introduction
01
1. What is GraphQL?
GraphQL ante enti? · GraphQL enduku create chesaru? · GraphQL vs REST · GraphQL features · Query language ante enti? · Strongly typed API · Client-selected fields · Single endpoint concept · Over-fetching · Under-fetching · GraphQL use cases · GraphQL limitations
Read Chapter →
02
2. GraphQL vs REST
REST endpoints vs GraphQL single endpoint · Over-fetching & Under-fetching · Multiple REST requests vs Nested GraphQL query · REST caching vs GraphQL caching · HTTP status behavior · File uploads · Best use cases · Choosing REST or GraphQL
Read Chapter →
Phase 02
Setup and First GraphQL App
03
3. GraphQL Setup
Node.js setup · npm project · GraphQL package · GraphQL server options · Apollo Server overview · GraphQL Yoga overview · Express integration · TypeScript setup · Environment variables · Project scripts · Development server
Read Chapter →
04
4. Your First GraphQL Server
Schema definition · Resolver definition · Query root · GraphQL endpoint · Starting server · GraphQL IDE · Sending first query · JSON response · Resolver flow · Error response
Read Chapter →
05
5. Project Structure
schema folder · resolvers folder · queries folder · mutations folder · types folder · services folder · repositories folder · middleware folder · context folder · tests folder · Code-first structure · Schema-first structure
Read Chapter →
Phase 03
Schema and Type System
06
6. Schema Basics
Schema ante enti? · Type definitions · Root types · Query · Mutation · Subscription · Fields · Arguments · Return types · Non-null types · List types · Schema validation
Read Chapter →
07
7. Scalar Types
String · Int · Float · Boolean · ID · Non-null ! · List [Type] · Nested lists · Custom scalars · Date scalar · JSON scalar · Upload scalar overview
Read Chapter →
08
8. Object Types
Object type · Fields · Nested object fields · Relationships · Nullable fields · Required fields · Type reuse · Type naming conventions · Schema documentation · Type evolution
Read Chapter →
09
9. Enums
Enum ante enti? · Defining enums · Enum arguments · Enum response values · Course level enum · Status enum · Role enum · Enum validation · Enum evolution · Enum client handling
Read Chapter →
10
10. Input Types
Input type ante enti? · Input object · Create input · Update input · Nested input · Required input fields · Optional input fields · Input validation · Reusing input types · Input naming conventions
Read Chapter →
11
11. Interfaces & Unions
Interface ante enti? · Implementing interfaces · Shared fields · Union types · Inline fragments · Type resolution · Search result union · Interface vs union · Schema design · Client handling
Read Chapter →
Phase 04
Queries
12
12. Queries
Query ante enti? · Selection sets · Fields · Nested fields · Aliases · Operation names · Multiple fields · Multiple operations · Query comments · Query formatting
Read Chapter →
13
13. Arguments
Field arguments · ID arguments · Filter arguments · Search arguments · Pagination arguments · Optional arguments · Required arguments · Default arguments · Multiple arguments · Argument validation
Read Chapter →
14
14. Variables
Why variables are needed · Variable declaration · Variable types · Required variables · Optional variables · Variable defaults · Variables in nested inputs · Variables in client apps · Variable validation · Avoiding string interpolation
Read Chapter →
15
15. Fragments
Fragment ante enti? · Reusing selections · Named fragments · Inline fragments · Fragment arguments overview · Nested fragments · Fragment organization · Fragment composition · Fragment performance · Fragment best practices
Read Chapter →
16
16. Directives
Directive ante enti? · @include · @skip · @deprecated · @specifiedBy · Custom directives · Schema directives · Query directives · Authorization directives · Directive validation
Read Chapter →
Phase 05
Resolvers and Execution
17
17. Resolvers
Resolver ante enti? · Root resolver · Field resolver · Resolver arguments · Parent object · Context · Info object · Resolver return values · Async resolvers · Resolver errors · Resolver organization · Resolver testing
Read Chapter →
18
18. Resolver Context
Resolver signature · Parent value · Arguments · Context object · GraphQL info · Current user · Database connection · Service injection · Request headers · Request ID · Context security · Context testing
Read Chapter →
19
19. Nested Resolvers
Nested object resolver · Course lessons · Lesson course · Resolver chaining · Parent object · Relationship resolution · Async nested data · N+1 problem · DataLoader · Resolver performance
Read Chapter →
20
20. Validation & Execution
Parsing query · Validation · Execution · Resolver execution order · Parallel fields · Serial mutations · Null propagation · Partial errors · Error paths · Query complexity · Query depth · Validation rules
Read Chapter →
Phase 06
Mutations
21
21. Mutations
Mutation ante enti? · Create operation · Update operation · Delete operation · Mutation input · Mutation payload · Success response · Error response · Mutation naming · Mutation testing
Read Chapter →
22
22. Mutation Inputs & Payloads
Input validation · Create payload · Update payload · Delete payload · Success flag · Error list · Client-friendly payload · Mutation id · Mutation idempotency · Mutation authorization
Read Chapter →
23
23. CRUD Mutations
createCourse · updateCourse · deleteCourse · createLesson · updateLesson · deleteLesson · publishLesson · completeLesson · submitQuiz · Mutation transactions
Read Chapter →
Phase 07
Subscriptions and Real-Time
24
24. Subscriptions
Subscription ante enti? · Long-lived requests · Real-time events · WebSockets · Subscription resolver · Subscribe operation · Publish events · Connection authentication · Reconnection · Subscription cleanup
Read Chapter →
25
25. Real-Time Project
Chat messages · Online users · Typing status · Lesson progress · Compiler output · Notifications · Subscription filtering · Event authorization · Reconnection handling · Scaling subscriptions
Read Chapter →
Phase 08
Pagination and Filtering
26
26. Offset Pagination
Offset pagination · Page number · Limit · Total count · Page metadata · Sorting · Offset limitations · Large dataset problems · API implementation · Client pagination
Read Chapter →
27
27. Cursor Pagination
Cursor ante enti? · Connection · Edge · Node · PageInfo · hasNextPage · hasPreviousPage · startCursor · endCursor · first · after · Cursor stability
Read Chapter →
28
28. Filtering & Sorting
Filter input · Search input · Level filter · Published filter · Date filter · Sort input · Ascending sort · Descending sort · Combining filters · Query performance · Input validation · Filter schema design
Read Chapter →
Phase 09
Authentication, Authorization & Security
29
29. Authentication
Authentication ante enti? · Context user · Cookies · Sessions · JWT · Bearer token · Login mutation · Logout mutation · Refresh token · Password hashing · Current user query · Authentication errors
Read Chapter →
30
30. Authorization
Authorization ante enti? · Field-level authorization · Resolver authorization · Role-based access · Permission-based access · Admin fields · User-owned resources · Authorization directives · Context authorization · Authorization testing
Read Chapter →
31
31. GraphQL Security
Query depth limiting · Query complexity limiting · Query cost analysis · Rate limiting · Introspection control · Disable playground in production · Input validation · Error masking · Resource authorization · Batch attack prevention · Alias abuse · Timeout handling · Upload security
Read Chapter →
Phase 10
Database Integration & Performance
32
32. SQL Integration
Database connection · Models · Repository · Query resolver · Mutation resolver · Transactions · Pagination · Filtering · Sorting · Database errors · Connection pooling · Query optimization
Read Chapter →
33
33. MongoDB Integration
MongoDB connection · Document resolver · Nested documents · Reference resolver · Aggregation · Pagination · Transactions · Change streams · Database errors · MongoDB project
Read Chapter →
34
34. DataLoader & N+1
N+1 problem · Nested resolver issue · DataLoader ante enti? · Batching · Caching · DataLoader keys · Per-request loader · SQL batching · MongoDB batching · Performance testing
Read Chapter →
Phase 11
Client Development & State
35
35. GraphQL Clients
GraphQL client ante enti? · Manual fetch · Apollo Client · Relay overview · urql overview · Client setup · Query documents · Mutation documents · Variables · Error handling · Loading states · Empty states
Read Chapter →
36
36. Apollo Client
Apollo Client setup · ApolloProvider · useQuery · useMutation · useSubscription · Query variables · Refetching · Polling · Cache updates · Optimistic UI · Error policies · Network status
Read Chapter →
37
37. Client Cache
Normalized cache · Cache keys · Cache reads · Cache writes · Cache invalidation · Refetch queries · Update mutation cache · Optimistic updates · Pagination cache · Cache debugging
Read Chapter →
Phase 12
Schema Design and Federation
38
38. Schema Design
Schema-first design · Code-first design · Domain modeling · Naming conventions · Nullable vs non-null fields · Input design · Payload design · Relationship design · Deprecation · Schema evolution · Backward compatibility · Documentation descriptions
Read Chapter →
39
39. Introspection
Introspection ante enti? · __schema · __type · __typename · Schema documentation tools · GraphQL IDEs · Client code generation · Production introspection policy · Introspection security · Schema discovery
Read Chapter →
40
40. Federation
Federation ante enti? · Monolith schema · Subgraphs · Supergraph · Entities · Gateway · Shared types · Cross-service fields · Federation composition · Distributed authorization · Federation observability · When federation is needed
Read Chapter →
Phase 13
Testing, Documentation and Deployment
41
41. Testing
Schema tests · Resolver unit tests · Query tests · Mutation tests · Authentication tests · Authorization tests · Error tests · Integration tests · Database tests · Subscription tests · Contract tests · Test fixtures
Read Chapter →
42
42. Documentation
Schema descriptions · Field descriptions · Type descriptions · Query examples · Mutation examples · Deprecation reasons · GraphQL Playground · GraphiQL · API explorer · Client documentation · Changelog · Schema registry
Read Chapter →
43
43. Monitoring
Request logging · Resolver timing · Query complexity · Query depth · Error tracking · Tracing · Correlation IDs · Database timings · Cache metrics · Subscription metrics · Slow query reports · Alerts
Read Chapter →
44
44. Deployment
Production build · Environment variables · Database deployment · GraphQL endpoint · HTTPS · CORS · Rate limiting · Introspection policy · Docker · CI/CD · Horizontal scaling · WebSocket scaling · Health checks · Rollback
Read Chapter →
45
45. GraphQL Projects
Beginner Projects (Course API, Book library) · Intermediate Projects (E-commerce, Recipe search) · Advanced Projects (Our Compiler Platform, Real-time quiz, Federation) · Complete Schema & Operations Specification
Read Chapter →
46
46. GraphQL Practice Quiz
Comprehensive GraphQL Knowledge Check · 30 Multiple Choice Certification Exam Questions · Schema, Resolvers, Auth, Subscriptions, DataLoader & Federation
Read Chapter →