Partial success responses in GraphQL - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a partial success response in GraphQL?

A partial success response means the server returns some data successfully while also reporting errors for parts that failed. It allows clients to get useful data even if some parts of the query have issues.

beginner

How does GraphQL indicate errors in a partial success response?

GraphQL includes an "errors" field in the response alongside the "data" field. The "data" field contains the successful parts, and the "errors" field lists problems encountered.

intermediate

Why are partial success responses useful in real-life applications?

They let apps show available information without failing completely. For example, a social media app can show user posts even if loading comments fails, improving user experience.

beginner

What does a typical partial success GraphQL response look like?

It has a "data" object with some fields filled and an "errors" array describing which parts failed. This helps clients handle errors gracefully while using the good data.

intermediate

Can partial success responses cause confusion? How to handle them?

Yes, because data and errors come together. Clients should check both fields and decide how to show errors or fallback content, keeping the app stable and clear for users.

In a GraphQL partial success response, where are errors reported?

A In the "errors" field alongside "data"

B Only in the "data" field

C In HTTP status code only

D Errors are not reported

GraphQL returns errors in the "errors" field while still providing partial data in the "data" field.

What does a partial success response allow a client to do?

A Receive some data even if parts of the query fail

B Only receive data if the entire query succeeds

C Ignore all errors silently

D Restart the query automatically

Partial success responses let clients get available data even when some parts fail.

Which of these is true about partial success responses?

A They always return HTTP 500 status

B They combine data and errors in one response

C They never include an errors field

D They only happen in REST APIs

Partial success responses include both data and errors fields in the same GraphQL response.

How should clients handle partial success responses?

A Discard data if any error exists

B Ignore errors and show all data blindly

C Retry the query automatically

D Check both data and errors, then decide what to show

Clients should check both fields to handle errors gracefully and use available data.

Which scenario best shows the benefit of partial success responses?

A Failing the entire page if any data is missing

B Not showing any data until all queries succeed

C Showing user profile info even if friend list fails to load

D Ignoring errors and showing empty page

Partial success lets apps show what is available, improving user experience.

Explain what a partial success response is in GraphQL and why it is useful.

Think about how apps can still show some info even if parts fail.

Describe how a client should handle a GraphQL response that contains both data and errors.

Consider how to keep the app stable and clear for users.