AWS - DynamoDB
Given this DynamoDB item with TTL attribute
expireAt: 1700000000 (Unix epoch seconds), what happens when current time is 1700000001?Given this DynamoDB item with TTL attribute expireAt: 1700000000 (Unix epoch seconds), what happens when current time is 1700000001?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Compare current time with TTL value
The current time (1700000001) is greater than the TTL attribute (1700000000), so the item is expired.Step 2: Understand TTL behavior on expiration
DynamoDB TTL automatically deletes expired items shortly after expiration time passes.Final Answer:
Item is immediately deleted by DynamoDB TTL process -> Option DQuick Check:
Current time > TTL = item deleted [OK]
Quick Trick: Item deletes soon after TTL time passes [OK]
Common Mistakes:
- Thinking TTL deletes instantly at exact second
- Assuming manual deletion is needed
- Believing TTL archives data instead of deleting
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