[Solved] You want to paginate through a large dataset sorted by user_id (ascending) and then timestamp... Which search_after value correctly fetches the next page after user_id=42 and timestamp=1680000000? | Elasticsearch

Elasticsearch - Advanced Patterns

You want to paginate through a large dataset sorted by user_id (ascending) and then timestamp (descending). Which search_after value correctly fetches the next page after user_id=42 and timestamp=1680000000?

A[42, 1680000000]

B[42, -1680000000]

C[1680000000, 42]

D["42", "1680000000"]

Step-by-Step Solution

Solution:

Step 1: Understand sort order and search_after values
The sort is by user_id ascending, then timestamp descending. The search_after array must match this order.
Step 2: Match values to sort order
The correct search_after is an array with user_id first, then timestamp. Since timestamp is descending, the value is used as is (no negation).
Final Answer:
[42, 1680000000] -> Option A
Quick Check:
search_after array matches sort fields order [OK]

Quick Trick: search_after array order matches sort fields order exactly [OK]

Common Mistakes:

MISTAKES

Reversing order of values in search_after
Negating timestamp for descending sort
Using strings instead of numbers without need

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More Elasticsearch Quizzes

Which search_after value correctly fetches the next page after user_id=42 and timestamp=1680000000?

Step 1: Understand sort order and search_after values

Step 2: Match values to sort order

Final Answer:

Quick Check:

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