Data Fetching
Data Fetching Patterns
Reliable frontends treat the network as lossy and unpredictable. These patterns help you model server interaction, caching, and synchronization so UI stays trustworthy under stress.
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Patterns
Data Fetching
Data Fetching Patterns
Specific, reusable techniques you can drop into production.
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Cache Invalidation
Clear or update cached data strategically when underlying information changes.
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Dependent Query
Chain API requests where subsequent calls depend on previous results.
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Effect-Based Fetching
Trigger data fetches as side effects when components mount or dependencies change.
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Error Handling
Manage and display errors gracefully from failed API requests.
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GraphQL Query
Request precisely the data needed using GraphQL's declarative query language.
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Infinite Scroll
Load more content automatically as users scroll to create seamless browsing experiences.
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Loading State
Show loading indicators while asynchronous operations are in progress.
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Mutation
Handle create, update, and delete operations with proper cache synchronization.
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Optimistic Update
Update UI immediately with expected results before server confirmation for perceived speed.
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Pagination
Load large datasets in discrete pages to manage memory and network usage.
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Parallel Request
Execute multiple independent API calls simultaneously to reduce total load time.
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Polling
Fetch data repeatedly at regular intervals to keep information current.
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Prefetching
Load data before it's needed based on predicted user actions.
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Query Caching
Store fetched data to avoid redundant network requests and improve performance.
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Query Deduplication
Prevent duplicate network requests when multiple components simultaneously request the same data.
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Request Cancellation
Abort in-flight requests when components unmount or dependencies change.
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REST Response Normalization
Transform nested API responses into flat, relational structures for efficient updates.
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Retry
Re-attempt failed requests automatically with exponential backoff strategies.
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Server-Sent Events
Receive server-pushed updates over HTTP for one-way real-time data streams.
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Stale-While-Revalidate
Show cached data immediately while fetching fresh data in the background.
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WebSocket Integration
Establish persistent connections for real-time bidirectional communication.
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