No Compression Algorithm For Learning

Nuggets of AWS that I continue to find

As the title suggests, I will continue to update this as a diary

28-Apr-2020

#4: For RDS, Read replicas are created with asynchronous replication. Multi-AZ database copies are created with synchronous replication.

#5: For MariaDB, MySQL, and PostgreSQL you can create read replicas of read replica.

#6: You can create a MariaDB, MySQL, Oracle or PostgreSQL read replica in a different AWS Region than the source DB instance.

22-Apr-2020

#3: Currently there is no AWS API which can give you all the service prefix and the friendly name of the AWS services. The option is to read this and go to individual services on this page to find that information. For e.g. Amazon Athena (service prefix: athena) or Alexa for Business (service prefix: a4b). Among other things, this information is useful for writing those JSON policy documents within IAM while specifying Action, Resource, or Condition.

21-Apr-2020

#1: You cannot run the aws support describe-services operation if you do not have a premium support subscription. It throws a SubscriptionRequiredException error if you try running this operation through CLI or API.

If you are able to run it, you will see a response with a list of services like this:

#2: You cannot perform Switch Role ( assumerole) operation from the root account. This is a good thing.