Standard vs FIFO queues in AWS - Hands-On Comparison

Standard vs FIFO Queues in AWS SQS

📖 Scenario: You are building a simple messaging system using AWS Simple Queue Service (SQS). You want to understand the difference between Standard and FIFO queues by creating both types and configuring them properly.

🎯 Goal: Create one Standard queue and one FIFO queue in AWS SQS using infrastructure as code. Configure the FIFO queue with the required settings to ensure message order and exactly-once processing.

📋 What You'll Learn

Create a Standard queue named MyStandardQueue

Create a FIFO queue named MyFifoQueue.fifo

Set FifoQueue attribute to true for the FIFO queue

Set ContentBasedDeduplication attribute to true for the FIFO queue

💡 Why This Matters

🌍 Real World

AWS SQS queues are used to decouple components of cloud applications, enabling reliable message passing and workload distribution.

💼 Career

Understanding how to configure Standard and FIFO queues is essential for cloud engineers and developers building scalable, fault-tolerant systems on AWS.

1

Create a Standard SQS Queue

Create an AWS SQS queue named MyStandardQueue using AWS CloudFormation syntax. Use the resource type AWS::SQS::Queue and set the QueueName property to MyStandardQueue.

AWS

# Create an AWS SQS Standard queue named MyStandardQueue
# Your code here

Need a hint?

Use Resources section and define a resource with Type: AWS::SQS::Queue. Set QueueName to MyStandardQueue.

2

Create a FIFO SQS Queue with FIFO attribute

Add a new AWS SQS queue resource named MyFifoQueue with the property QueueName set to MyFifoQueue.fifo. Set the FifoQueue property to true to make it a FIFO queue.

AWS

Resources:
  MyStandardQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: MyStandardQueue
# Add a FIFO queue named MyFifoQueue.fifo with FifoQueue attribute set to true
# Your code here

Need a hint?

Remember FIFO queue names must end with .fifo. Use FifoQueue: true in Properties.

3

Enable Content-Based Deduplication on FIFO Queue

In the MyFifoQueue resource, add the property ContentBasedDeduplication and set it to true inside the Properties section. This enables automatic deduplication of messages based on content.

AWS

Resources:
  MyStandardQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: MyStandardQueue
  MyFifoQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: MyFifoQueue.fifo
      FifoQueue: true
# Add ContentBasedDeduplication: true to MyFifoQueue
# Your code here

Need a hint?

Add ContentBasedDeduplication: true under Properties of MyFifoQueue.

4

Complete CloudFormation Template with Both Queues

Ensure the CloudFormation template includes both MyStandardQueue and MyFifoQueue resources with all required properties: QueueName, FifoQueue set to true for the FIFO queue, and ContentBasedDeduplication set to true for the FIFO queue.

AWS

Resources:
  MyStandardQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: MyStandardQueue
  MyFifoQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: MyFifoQueue.fifo
      FifoQueue: true
      ContentBasedDeduplication: true
# Verify the template is complete with both queues and correct properties
# Your code here

Need a hint?

Double-check both queues are defined with correct names and FIFO queue has all required attributes.