10 November 2020

#GraphQL

#GraphQL

Key Concepts


S.No Topic Sub-Topics
1 GraphQL What is GraphQL?, Features, Advantages, Use cases, REST vs GraphQL
2 GraphQL Architecture Server, Client, Schema, Resolver, Type System
3 Setting Up GraphQL Installation, Apollo Server, GraphQL Yoga, Express integration, Node.js setup
4 GraphQL Schema Type definitions, Scalars, Object types, Enums, Interfaces
5 Queries Basic queries, Nested queries, Arguments, Aliases, Fragments
6 Mutations Creating mutations, Arguments, Input types, Payloads, Return values
7 Resolvers Query resolvers, Mutation resolvers, Field resolvers, Parent and args, Context
8 GraphQL Types Scalar types, Object types, Enum types, Union types, Input types
9 Variables Query variables, Mutation variables, Default values, Validation, Security
10 Fragments Reusable fragments, Fragment syntax, Nested fragments, Inline fragments, Best practices
11 Directives @include, @skip, @deprecated, Custom directives, Use cases
12 GraphQL Playground & Tools GraphiQL, Apollo Studio, Insomnia, Postman, Playground setup
13 Error Handling Errors in resolvers, Formatting errors, Error codes, Logging, Best practices
14 Authentication & Authorization JWT tokens, OAuth integration, Role-based access, Context handling, Securing endpoints
15 Pagination Offset-based, Cursor-based, Relay style, Performance optimization, Best practices
16 Filtering & Sorting Query filters, Logical operators, Sorting by fields, Nested filters, Best practices
17 GraphQL Subscriptions Real-time updates, WebSockets, Setup with Apollo, Publish/Subscribe model, Use cases
18 Batching & Caching DataLoader, Query batching, Response caching, Client-side caching, Server-side caching
19 Performance Optimization Query complexity analysis, Caching, Persisted queries, Lazy loading, Resolver optimization
20 GraphQL with Databases SQL integration, NoSQL integration, ORM usage, Query mapping, Data fetching strategies
21 GraphQL Federation Microservices architecture, Apollo Federation, Schema stitching, Resolver delegation, Best practices
22 Schema Design Best Practices Modular schemas, Naming conventions, Versioning, Documentation, Extensibility
23 Testing GraphQL APIs Unit tests, Integration tests, Mocking resolvers, Jest, Apollo testing utilities
24 Security Best Practices Query depth limiting, Query cost analysis, Authentication, Authorization, Input validation
25 GraphQL Clients Apollo Client, Relay, URQL, React integration, Angular/ Vue integration
26 GraphQL Server Deployment Hosting options, Docker deployment, Kubernetes, Scaling, Monitoring
27 Versioning & Maintenance Schema evolution, Deprecating fields, Backward compatibility, Documentation, Change management
28 Advanced Features Union types, Interfaces, Custom scalars, Schema stitching, Middleware
29 Hands-on Projects CRUD API project, Real-time chat app, E-commerce API, Social media API, Analytics dashboard API
30 Certification & Career Path GraphQL certification, Job roles, Portfolio projects, Learning resources, Career opportunities

Interview question

Basic

  1. What is GraphQL?
  2. Who developed GraphQL?
  3. What are the main benefits of GraphQL over REST?
  4. What is a GraphQL schema?
  5. What are queries in GraphQL?
  6. What are mutations in GraphQL?
  7. What are subscriptions in GraphQL?
  8. What is a resolver in GraphQL?
  9. What is the difference between query and mutation?
  10. What are GraphQL types?
  11. What are scalar types in GraphQL?
  12. What are enums in GraphQL?
  13. What are lists in GraphQL?
  14. What are non-null types in GraphQL?
  15. What is introspection in GraphQL?
  16. What is a fragment in GraphQL?
  17. What are directives in GraphQL?
  18. What is the default HTTP method for GraphQL requests?
  19. How is GraphQL strongly typed?
  20. What is the difference between GraphQL and SQL?
  21. Can GraphQL work without a database?
  22. What is the role of __typename in GraphQL?
  23. What is batching in GraphQL?
  24. What is the purpose of GraphQL variables?
  25. What are the limitations of GraphQL?

Intermediate

  1. What is the role of GraphQL schema definition language (SDL)?
  2. How do you define custom scalar types in GraphQL?
  3. Explain input types in GraphQL.
  4. What are unions in GraphQL?
  5. What are interfaces in GraphQL?
  6. How do you validate GraphQL queries?
  7. How does GraphQL handle versioning?
  8. What are the best practices for naming in GraphQL schema?
  9. What is query complexity analysis?
  10. How does GraphQL handle over-fetching and under-fetching?
  11. What are nested resolvers?
  12. What is the N+1 problem in GraphQL?
  13. How can you solve the N+1 problem in GraphQL?
  14. What is DataLoader in GraphQL?
  15. How does GraphQL handle error reporting?
  16. What are partial responses in GraphQL?
  17. How does GraphQL differ from gRPC?
  18. How do you use variables with fragments in GraphQL?
  19. How does caching work in GraphQL?
  20. What is persisted queries in GraphQL?
  21. What is GraphQL Playground?
  22. What is Apollo Server?
  23. What is Relay in GraphQL?
  24. How do GraphQL subscriptions work with WebSockets?
  25. What are the security concerns in GraphQL?

Advanced

  1. What are GraphQL Federation and schema stitching?
  2. What is Apollo Federation?
  3. What is the difference between schema stitching and federation?
  4. What is GraphQL Gateway?
  5. How do you implement authentication in GraphQL?
  6. How do you implement authorization in GraphQL?
  7. What are GraphQL directives and how do you create custom ones?
  8. How do you handle file uploads in GraphQL?
  9. What is GraphQL mesh?
  10. What are GraphQL unions vs interfaces?
  11. How do you implement batching in GraphQL resolvers?
  12. What are best practices for designing GraphQL mutations?
  13. How do you handle pagination in GraphQL?
  14. What are Relay-style pagination and connections?
  15. How do you handle rate limiting in GraphQL APIs?
  16. What is query depth limiting in GraphQL?
  17. How does GraphQL handle subscriptions at scale?
  18. How does GraphQL integrate with microservices?
  19. How do you monitor GraphQL performance?
  20. How do you trace GraphQL queries in production?
  21. What is schema federation in Apollo?
  22. What are schema delegation techniques in GraphQL?
  23. How do you modularize large GraphQL schemas?
  24. What is GraphQL schema stitching middleware?
  25. What are GraphQL schema directives for logging and tracing?

Expert

  1. How do you secure GraphQL APIs against DoS attacks?
  2. What is query cost analysis in GraphQL?
  3. How do you handle caching in GraphQL at scale?
  4. How do you integrate GraphQL with REST APIs?
  5. How do you integrate GraphQL with gRPC?
  6. How do you optimize GraphQL queries in production?
  7. What are advanced DataLoader patterns?
  8. How do you implement GraphQL schema federation in microservices architecture?
  9. How do you version GraphQL schemas in large organizations?
  10. How does GraphQL fit into Event-Driven Architectures (EDA)?
  11. How do you monitor and log GraphQL errors?
  12. How do you integrate GraphQL with Kafka?
  13. How do you handle real-time updates in GraphQL at scale?
  14. What is Apollo Gateway architecture?
  15. How do you build resilient GraphQL APIs?
  16. What are GraphQL SDL limitations and solutions?
  17. How do you implement GraphQL authorization at field level?
  18. How do you manage breaking changes in GraphQL APIs?
  19. What are GraphQL best practices for microfrontends?
  20. How do you design GraphQL APIs for large-scale enterprise systems?
  21. What is GraphQL-over-HTTP vs GraphQL-over-WebSockets?
  22. How do you handle federation across multiple teams in GraphQL?
  23. What are common GraphQL anti-patterns?
  24. What is the future of GraphQL in API design?
  25. Compare GraphQL, REST, gRPC, and OData for enterprise use cases.

Related Topics


-
Labels: , , , ,