How should a database specialist fix this issue?
Use a client library that supports the TTL functionality for DynamoDB.
Include a query filter expression to ignore items with an expired TTL.
Set the ConsistentRead parameter to true when querying the table.
Create a local secondary index on the TTL attribute.
Explanations:
The TTL feature in DynamoDB is managed by DynamoDB itself, not through client libraries. A client library supporting TTL does not resolve the issue of reading expired items.
A query filter expression can be used to filter out items that have expired based on their TTL attribute, ensuring that only valid data is returned by queries.
Setting ConsistentRead to true ensures that the most up-to-date data is read, but it does not affect expired items. It does not prevent the reading of expired data.
Creating a local secondary index on the TTL attribute does not address the issue of expired items being read. TTL expiry is not related to the indexing system in this context.
If I’m not mistaken, the answer is:
Include a query filter expression to ignore items with an expired TTL.