Book Image

AWS Certified Developer - Associate Guide

By : Vipul Tankariya, Bhavin Parmar
Book Image

AWS Certified Developer - Associate Guide

By: Vipul Tankariya, Bhavin Parmar

Overview of this book

AWS Certified Developer - Associate Guide starts with a quick introduction to AWS and the prerequisites to get you started. Then, this book gives you a fair understanding of core AWS services and basic architecture. Next, this book will describe about getting familiar with Identity and Access Management (IAM) along with Virtual private cloud (VPC). Moving ahead you will learn about Elastic Compute cloud (EC2) and handling application traffic with Elastic Load Balancing (ELB). Going ahead you we will talk about Monitoring with CloudWatch, Simple storage service (S3) and Glacier and CloudFront along with other AWS storage options. Next we will take you through AWS DynamoDB – A NoSQL Database Service, Amazon Simple Queue Service (SQS) and CloudFormation Overview. Finally, this book covers understanding Elastic Beanstalk and overview of AWS lambda. At the end of this book, we will cover enough topics, tips and tricks along with mock tests for you to be able to pass the AWS Certified Developer - Associate exam and develop as well as manage your applications on the AWS platform.
Table of Contents (29 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface
Index

SQS limits


It is important to understand SQS limits with respect to queues, messages, and policies. This topic describes various limits:

  • Limits related to queues
  • Limits related to messages
  • Limits related to policies

The following table describes these limits:

Limit

Applies to

Description

Inflight messages per queue

Queues

Standard queue: Maximum 120,000 inflight messages.

FIFO queue: Maximum 20,000 inflight messages.

SQS returns an overLimit error if this limit is exceeded.

Queue name

Queues

Queue names can have a maximum of 80 characters. FIFO queue names must end with .fifo. Queue names can have alphanumeric characters, hyphens, and underscores.

Message attributes

Message

A message can have a maximum of 10 metadata attributes.

Message batch

Message

A message batch can have a maximum of 10 messages per batch.

Message content

Message

Message content can include only XML, JSON, and any unformatted text.

Message retention

Message

A queue can retain a message for a minimum of 60 seconds, a maximum of 14 days, and, by...