DynamoDB

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

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