[Solved] You have an API that returns data with cursor-based pagination. The API returns the following responses in sequence:1. {"data": ["a", "b"], "next_cursor": "c1"} 2. {"data": ["c", "d"], "next_cursor":... | Rest API

Rest API - Pagination Patterns

You have an API that returns data with cursor-based pagination. The API returns the following responses in sequence:

1. {"data": ["a", "b"], "next_cursor": "c1"}
2. {"data": ["c", "d"], "next_cursor": "c2"}
3. {"data": ["e"], "next_cursor": null}

You want to collect all items without duplicates even if the API sometimes returns overlapping data due to data changes. Which approach is best?

ACollect all items in a list and remove duplicates after fetching all pages

BFetch only the first page to avoid duplicates

CUse a set to store items as you fetch each page to avoid duplicates immediately

DIgnore duplicates and trust API never repeats data

Step-by-Step Solution

Solution:

Step 1: Understand overlapping data issue
Cursor-based pagination can return overlapping items if data changes during pagination, causing duplicates.
Step 2: Choose a method to avoid duplicates
Using a set to store items as they are fetched avoids duplicates immediately and efficiently.
Step 3: Evaluate other options
Removing duplicates after fetching all pages (list) is less efficient. Ignoring duplicates or fetching only first page is incorrect.
Final Answer:
Use a set to store items as you fetch each page to avoid duplicates immediately -> Option C
Quick Check:
Use set to avoid duplicates during fetch [OK]

Quick Trick: Use set to track unique items during pagination [OK]

Common Mistakes:

Master "Pagination Patterns" in Rest API

9 interactive learning modes - each teaches the same concept differently

More Rest API Quizzes

You have an API that returns data with cursor-based pagination. The API returns the following responses in sequence: