AWS-101 Flashcards
How can start with AWS?
Need to have am account and AWS Secret access keys or Root Creds
How Many AccessKeys can an IAM user has?
2
What is the only way of getting the AKeys
By downloading or recreating the user
What is the default region?
us-east-1
What is Provider chain related to ?
It is related to obtaining creds and connection to aws
How to handle the ResetException , while uploading the stream to aws?
Mark the SetReadLimit to one byte < the size of object
What is ServiceClient ?
To conenct to AWS services , each has a service client
How we can have a Service Client
So each service has a service Interface and a client builder, for e.g. AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.standard()
.withRegion(Regions.US_WEST_2)
.withCredentials(new ProfileCredentialsProvider(“myProfile”))
.build();
What facilities the Builder provides?
The Builder provides to set the prop or configs while init and provides a build method to create client
Can we have Asyn client for all AWS services?
Except for S3 we can have for all , just need to add [Async]ClientBuilder
Can we have ExceutoFactory also, while invoking the ServiceClient?
Yes We can have…AysncClientBuilder.standard().withExecutorFactory(() -> Executors.newFixedThreadPool(10)).build()
Do we have a defaultClient()
Yes Offcourse like [service]ClientBuilder.defaultClient()
Are ServiceClients thread safe?
Yes , each client has its own connection pool,
How can we explicitly shut down a ServiceClient?
{ServiceClient client } = {Service}ClientBuilder.defaultClient();
client.shutdown()
What are the ways to connect to AWS?
Use a Default credential Provider Chain, Create a specific Credential provider, or ytou may crwate your own, Supply the creds root or IAM or temp creds by STS
