Interview Q&A / AWS & Cloud
AWS & Cloud interview questions
EC2, S3, Lambda, IAM and VPC basics, with when to pick which service.
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- What is the difference between Query and Scan in DynamoDB?
Query finds items by partition key, optionally narrowing by sort key, and reads only matching items. Scan reads every item in the table or index and filters afterwards, so it is slower and costlier on big tables.
BeginnerQuick answer1 min read