Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “In this example, RedrivePolicy specifies that messages that fail to be processed after three attempts (maxReceiveCount: 3) will be moved to the my-dead-letter-queue SQS queue.”

A block of code is set as follows:

  DeadLetterQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: my-dead-letter-queue

Any command-line input or output is written as follows:

$ aws arc-zonal-shift start-zonal-shift \
--resource-identifier arn:aws:elasticloadbalacing:...
--away-from euw1-az2
--comment "possible issue isolated to AZ2"
--expires-in 12h

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Under Metrics, select the RDS namespace.”

Tips or important notes

Appear like this.