Connection pattern (edges, nodes, pageInfo) in GraphQL - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the edges field in the connection pattern?

The edges field holds an array of objects, each representing a link between nodes. It contains the actual data node and a cursor for pagination.

beginner

Explain the role of the nodes field in a GraphQL connection.

The nodes field is a simplified list of the actual data items without pagination cursors. It provides direct access to the data nodes.

intermediate

What information does the pageInfo object provide in the connection pattern?

The pageInfo object gives details about pagination state, such as whether there are more pages before or after the current set, and the cursors for the first and last items.

beginner

Why is the connection pattern useful in GraphQL APIs?

It standardizes how lists with pagination are handled, making it easier to fetch data in chunks and navigate through large datasets efficiently.

intermediate

In the connection pattern, what is a cursor and how is it used?

A cursor is a unique identifier for a position in the list. It helps the API know where to start or continue fetching data for pagination.

Which field in the connection pattern contains the actual data items without pagination info?

A edges

B pageInfo

C nodes

D cursor

The nodes field contains the list of data items directly, without pagination cursors.

What does the pageInfo object NOT provide?

A The total count of all items in the list

B Whether there are pages before the current one

C Cursor for the last item in the current page

D Whether there are more pages after the current one

pageInfo does not include total count; it focuses on pagination state like cursors and page availability.

In the connection pattern, what is stored inside each edge?

A Both the data node and a cursor

B Only the data node

C Only the cursor

D Pagination info like page numbers

Each edge contains the data node and a cursor used for pagination.

Why are cursors important in the connection pattern?

A They store the total number of items

B They identify the position of items for pagination

C They hold the actual data

D They replace the need for <code>pageInfo</code>

Cursors mark positions in the list to help fetch the next or previous set of items.

Which of these is NOT part of the standard connection pattern?

A edges

B nodes

C pageInfo

D totalCount

totalCount is optional and not part of the core connection pattern fields.

Describe the three main parts of the connection pattern and their roles.

Think about how data and pagination info are separated.

Explain how cursors and pageInfo work together to enable pagination in GraphQL.

Consider how you move through pages of data.