Question: How Do I Clear The Apollo Client Cache?

How does Apollo cache work?

Apollo Client stores the results of its GraphQL queries in a normalized, in-memory cache.

This enables your client to respond to future queries for the same data without sending unnecessary network requests..

How do you create a mutation query in GraphQL?

Mutation queries modify data in the data store and returns a value….Returning an Object in MutationStep 1 − Edit Schema File. Add a new method named addStudent which returns object in mutation type of schema. … Step 2 − Update the resolvers.js File. … Step 3 − Start the Server and Type the Request Query in GraphiQL.

Which database is best for GraphQL?

Temporality: FaunaDB is the only database that provides built-in temporality support with no limits on data history. With per-query snapshots, any API (GraphQL and FQL) in FaunaDB can return data at any given time.

What are GraphQL subscriptions used for?

What are GraphQL subscriptions? Subscriptions are a GraphQL feature that allows a server to send data to its clients when a specific event happens. Subscriptions are usually implemented with WebSockets. In that setup, the server maintains a steady connection to its subscribed client.

What does a GraphQL client usually do before caching the results of a query?

Generally, when caching data, the intuition is to put information that’s fetched remotely into a local store from where it can be retrieved later on. With GraphQL, the naive approach would be to simply put the results of GraphQL queries into the store and simply return them whenever the same query is sent.

What is mutation in react?

Mutations are a way to modify your remote and local data.

Is GraphQL backend or frontend?

GraphQL is a means for backend developers to design their APIs in an easy to use manner regardless of the front-end benefits.

Is GraphQL a REST API?

GraphQL follows the same set of constraints as REST APIs, but it organizes data into a graph using one interface. Objects are represented by nodes (defined using the GraphQL schema), and the relationship between nodes is represented by edges in the graph.

What is __ Typename in GraphQL?

GraphQL allows you to request __typename , a meta field, at any point in a query to get the name of the object type at that point.

What is Apollo cache?

InMemoryCache is a normalized data store that supports all of Apollo Client 1.0’s features without the dependency on Redux. In some instances, you may need to manipulate the cache directly, such as updating the store after a mutation. We’ll cover some common use cases here.

How do I get to the Apollo cache?

The devtools appear as an “Apollo” tab in your Chrome inspector, along side the “Elements” and “Console” tabs. There are currently 3 main features of the devtools: GraphiQL: Send queries to your server through the Apollo network interface, or query the Apollo cache to see what data is loaded.

What is normalized cache?

Normalized cache This type of caching will normalize the response data so that each GraphQL type is stored as a record in the cache with unidirectional references to its subtypes.

Does GraphQL cache data?

HTTP caches will not caches POST requests, which means GraphQL is simply not cacheable at the HTTP level. However, GET is indeed a valid way to query a GraphQL server over HTTP. This means that caches could indeed cache GraphQL responses.

Can GraphQL update data?

In GraphQL, you have to create mutations to modify server-side data, and different implementations are possible to support partial updates.