DynamoDB

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

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