Queries with React & Apollo Client (useQuery, useLazyQuery, caching, fetch policy)
In this tutorial, you’ll learn how to execute GraphQL queries in React using Apollo Client. We walk through useQuery, useLazyQuery, variables, caching behavior, polling intervals, refetching, and fetch policies such as network-only, cache-first, and more. By the end, you'll know exactly how Apollo executes queries, when it checks the cache, and how to force network updates for fresh data.
Whether you're building a full-stack app or optimizing a production GraphQL frontend, this video gives you everything you need to master Apollo Client queries.
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⏱️ Timestamps:
⌨️ (00:00) Intro
⌨️ (00:44) Set up React project with Apollo GraphQL Client
⌨️ (01:06) useQuery - Execute Query use React Apollo client
⌨️ (01:36) useQuery - Pass args/variables use React Apollo client
⌨️ (02:40) Update Cached Query results (Polling vs Refetching)
⌨️ (04:30) useLazyQuery - Manual execution query
⌨️ (05:15) Set fetch policy (fetchPolicy vs. nextFetchPolicy)
⌨️ (06:21) Outro
#ApolloClient #GraphQL #ReactJS
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