Job creation and queuing in Ruby on Rails - Mini Project: Build & Apply

Job Creation and Queuing in Rails

📖 Scenario: You are building a simple Rails app that processes user messages in the background. This helps keep the app fast and responsive by handling slow tasks later.

🎯 Goal: Create a background job in Rails that receives a message and logs it. Then, enqueue this job to run asynchronously.

📋 What You'll Learn

Create a job class called MessageJob that inherits from ApplicationJob

Add a method perform in MessageJob that accepts a message parameter

Inside perform, log the message using Rails.logger.info

Enqueue the MessageJob with a sample message string

💡 Why This Matters

🌍 Real World

Background jobs help web apps stay fast by doing slow tasks like sending emails or processing files later, not during user requests.

💼 Career

Understanding job creation and queuing is essential for Rails developers to build scalable and responsive applications.

1

Create the MessageJob class

Create a job class called MessageJob that inherits from ApplicationJob.

Ruby on Rails

# Create class MessageJob inheriting from ApplicationJob
# Your code here

Need a hint?

Use class MessageJob < ApplicationJob to start your job class.

2

Add the perform method

Inside the MessageJob class, add a method called perform that takes one parameter named message.

Ruby on Rails

class MessageJob < ApplicationJob
  # Define perform method with message parameter
  # Your code here
end

Need a hint?

Define def perform(message) inside the job class.

3

Log the message inside perform

Inside the perform method, add a line that logs the message using Rails.logger.info.

Ruby on Rails

class MessageJob < ApplicationJob
  def perform(message)
    # Log the message here
    # Your code here
  end
end

Need a hint?

Use Rails.logger.info(message) to log the message.

4

Enqueue the job with a sample message

Enqueue the MessageJob to run asynchronously with the message 'Hello from background job!'.

Ruby on Rails

class MessageJob < ApplicationJob
  def perform(message)
    Rails.logger.info(message)
  end
end

# Enqueue the job below
# Your code here

Need a hint?

Use MessageJob.perform_later('Hello from background job!') to enqueue the job.