Puma server configuration in Ruby on Rails - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the Puma server port to 3000.

Ruby on Rails

port [1]

Drag options to blanks, or click blank then click option'

A80

B8080

C5000

D3000

Attempts:

3 left

💡 Hint

Common Mistakes

Using a port number that is already in use by another service.

Forgetting to set the port in the Puma config file.

The port directive sets the port number Puma listens on. Here, 3000 is the default port for Rails development.

2fill in blank

medium

Complete the code to specify the number of Puma worker processes as 2.

Ruby on Rails

workers [1]

Drag options to blanks, or click blank then click option'

A2

B4

C8

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Setting workers to 0 or a negative number.

Confusing workers with threads.

The workers directive sets how many worker processes Puma will spawn. Setting it to 2 means Puma will run 2 separate processes to handle requests.

3fill in blank

hard

Fix the error in the code to correctly set the minimum number of threads to 1.

Ruby on Rails

threads [1], 5

Drag options to blanks, or click blank then click option'

A1

B5

C0

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Setting minimum threads to 0 causing Puma to not handle requests.

Swapping minimum and maximum thread numbers.

The threads directive takes two numbers: minimum and maximum threads. The minimum should be at least 1 to allow Puma to handle requests.

4fill in blank

hard

Complete the code to configure Puma to preload the application and bind to a Unix socket.

Ruby on Rails

preload_app! 
bind '[1]'

Drag options to blanks, or click blank then click option'

Atcp://0.0.0.0:3000

Bunix:///tmp/puma.sock

C127.0.0.1:9292

Dssl://localhost:443

Attempts:

3 left

💡 Hint

Common Mistakes

Using TCP binding syntax when Unix socket is required.

Forgetting to call preload_app! as a method.

preload_app! tells Puma to load the app before workers fork, improving memory usage. Binding to a Unix socket is done with bind 'unix:///path'.

5fill in blank

hard

Fill all three blanks to configure Puma with 3 workers, thread count between 2 and 8, and a port of 4000.

Ruby on Rails

workers [1]
threads [2], [3]
port 4000

Drag options to blanks, or click blank then click option'

A3

B2

C8

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up minimum and maximum thread numbers.

Setting workers or threads to zero or negative values.

This configuration sets Puma to use 3 worker processes, with threads ranging from 2 minimum to 8 maximum, and listens on port 4000.