Introduction

In the fetching data section, we discuss how to fetch data using GraphQL queries. Though fetching data can have the incidental effect of modifying data in Relay's local store (if the fetched data has changed), we haven't discussed any ways to intentionally modify our locally stored data.

This section will do just that: it will discuss how to update our local data store, and data on the server.

note

The Relay store is a cache of GraphQL data, associated with a given Relay environment, that we have encountered during the execution of an application.

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