DynamoDB

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What is dynamoDB consist of?
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Tables, items and attributes
How is called cache and when it is suitable?
DynamoDB
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DynamoDB Accelerator (DAX), it is suitable for ready heave workloads
In which two cases DAX is not suitable?
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For strong consistent read and for write heavy apps
What is default consistency?
DynamoDB
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Eventual consistency
For eventual consistency what is the throughput?
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2 reads of 4KB per second
For strong consistency what is the throughput?
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1 read of 4KB per second
Can you have indexes on non-primary keys?
DynamoDB
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Yes you can
What is local secondary index?
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Index that has same partition key and different sort key. Must be created at creation time!
Primary key consist of
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Partition key and sort key
What is global secondary index?
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Index that has different partition key and different sort key. Can be created at any time
What is provisioned throughput?
DynamoDB
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It is a limit how many reads/writes on second dynamoDB can handle. Alterantive is on-demand
What is a Provisioned Throughtput for writes in DynamoDB?
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1 write of 1KB per second
How is called a feature that enables to access individual records instead of whole tables?
DynamoDB
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IAM Condition
What types of querying we have in DynamoDB?
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Scan, query, api call
In scans how are data returned?
DynamoDB
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With all attributes and based on filtering attributes
If you don't want to get all attributes in scans in DynamoDB you should use
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Projection Expression
In query how are data returned?
DynamoDB
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Based on partition key
Give me a use case for scan
DynamoDB
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You are looking for user by email. You don't know his ID and partitionKey is userID.
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