Apollo Client provides powerful GraphQL capabilities for React applications. Here's how to use it effectively.
Setup and Configuration
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Queries
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Mutations
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Optimistic Updates
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Pagination
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Subscriptions
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Fragment Colocation
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Best Practices
Queries:
✓ Use fragments for reusable fields
✓ Colocate queries with components
✓ Use generated types (codegen)
✓ Handle loading and error states
Mutations:
✓ Use optimistic updates for UX
✓ Update cache properly
✓ Handle errors gracefully
✓ Show loading feedback
Caching:
✓ Configure type policies
✓ Use cache.modify for updates
✓ Normalize data with keyFields
✓ Handle pagination correctly
Conclusion
Apollo Client provides a complete GraphQL solution for React. Master queries and mutations, leverage the cache effectively with type policies, and use optimistic updates for responsive UIs. Colocate fragments with components for maintainability and use subscriptions for real-time features.