DynamoDB

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

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