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Ruby Based Web Applications

A Comparison of Preferred Web Servers that Power Ruby Based Web Applications

Chandresh Patel
Chandresh Patel CEO and Agile Coach
Last Updated on April 25, 2023 | Written By: Riken Solanki
May 18, 2017 5 min read

“It’s Friday evening, you are in a hurry to escape the everyday grind, and get straight to the movies. After all, it’s your favorite actor’s biggest blockbuster, and you can’t wait to watch the premier show. En route, you have already booked your seat in the top row, selected the flavor of popcorn, and which drink you would have today; order placed. Just as you move a block on the highway, you see a deadly jam of wheels. And the next thing you know is the hero got his makeover, and you have missed 45 minutes of the film. “

Here, I want you to take a moment to rewind and understand that in today’s digital world, how technology has made our life so convenient and applications as an integral part helps to lighten the burden, as mentioned in the above scenario. Behind the well-run scene of an application, there is a dedicated web server, the backbone of the application that store, process, and deliver the requested information to the users.

Every other moment, we turn to the web and mobile applications to fetch the information. Over here, processing a minuscule amount of response time can make a big difference. Faster response time to the user’s query can lead to happier users and helps to improve the bottom line of your business.

Ruby on Rails applications are known for its performance. When it comes to the Rails server, it’s a fair game to handle load balancing, manage your apps reverse proxy requests, and fend DoS attacks.

Set the pace for your app’s speed as well as scalability

Choosing a Rails server can help you set the right pace for your application’s speed as well as scalability. As hardware is getting more robust, whereas cloud computing platforms are aiming to replace dedicated servers. There are several popular Rails servers, but here I am going to discuss the three most popular Rails server products that have got significant updates in the past few months. Therefore, I am writing this article to compare Rack – web servers to see if there is an actual slight difference in the performance. Let’s have a look.

Why An App’s Raw Speed is Important?

An application’s raw speed is a factor for the vast majority of the applications. In Ruby’s app servers, the execution time of your HTTP calls, database queries, app code, likely dwarfs the millisecond difference in response times. Puma, Unicorn, and Passenger are plenty fast for almost every Ruby app.

However, I am not pointing out at benchmarked performance metrics. Specifically, those that hammer an app server with hundreds of concurrent requests without throttling (i.e., siege -b) because this is far from a realistic request pattern for almost every web app.

Unicorn: #1 Rails Server

In 2009, when James Pozdena introduced Unicorn, surprisingly, it maintained an average a second response, even at the time of inscribed by concurrent request. James noted that the response time grew by as much as only a second with each concurrent request.

However, as per the Nate Miller Unicorn’s speed was coming at a specific cost. While testing Unicorn as a replacement for a Mongrel deployment was causing a high number of 502 Bad Gateway errors. Miller also noticed a similar drop in average time on Unicorn. On the other hand, Unicorn’s standard deviation for gateways errors surprisingly increased and raised concerns where the speed gains could leave the door open to increased instability.

Unicorn

It is an HTTP server designed for Rack applications to serve fast clients on high-bandwidth connections, low-latency, and leverage the benefits of features in Unix/Unix-like kernels. Whereas, it should serve slow clients by placing a reverse proxy capable. Both the response and request in between unicorn and slow clients.

Unicorn

Source:https://www.ruby-toolbox.com/categories/web_servers

Passenger: #2 Rails Server

As per the Rails Core Team’s vote, it is the most “preferred way to deploy your Rails applications. After its significant update, the Rails server comes in two flavors: Enterprise and open source. You can integrate this module directly with Apache or NGINX, so you can upload and run your application code with ease.

The most desirable thing is its deployment error resistance, where users can shut down all application processes when they encounter a glitch in an application’s code or a configuration error. The Enterprise edition enables debugging and enhanced monitoring, so it becomes effortless to get the source of an error in real-time. As per the Phusion’s website, over 150,000 top-notch companies are running apps with Passenger.

Passenger

A modern web server and application server for Ruby, Python, and Node.js, optimized for performance, low memory usage, and ease of use.

Passenger

Source:https://www.ruby-toolbox.com/categories/web_servers

Puma: #3 Rails Server

Puma is the best default app server for newly generated Rails apps and on Heroku. It is so easy to configure, and it perfectly works out-of-the-box. For today’s users, it makes sense to start with Puma and evaluate Passenger as your app grows and required configuration options and advanced features.

Puma runs perfectly fine with JRuby or Rubinius as implementations provide true concurrency. Developers preparing for Rails 5, admins report significant speed improvements when combining Puma with NGINX’s proxy functionality. As per the Ruby converts search for Rails servers, programmers have noticed the difference between a system supercharged with Puma and a slow stack.

Puma

It is a simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications. Puma is advisable to use in both development and production environments.

puma

Source:https://www.ruby-toolbox.com/categories/web_servers

Unicorn, Passenger and Puma Feature Comparison

UNICORN PUMA PASSENGER
Clustering Yes Yes Yes
Multithreaded No Yes Enterprise Only
Slow client buffering No Yes Yes
Action Cable Yes Yes Yes
Support Open Source Open Source Open Source / Paid
Installation Gem Gem Binary or Gem
Zero-Downtime Deploys Yes Yes Enterprise

As per the Passenger’s recent update addressing speed and stability, Puma offers a lean and fast webserver solution to most applications that need high concurrency. And, it always makes sense to run your application tests and benchmarks. As per the growing ongoing support for Puma, numbers of cloud-based app servers, it has a significantly refreshed version of Mongrel that is so easy to test and enjoy.

Wrapping Up

We are a globally renowned Ruby on Rails development company based in the USA and serving all the shapes and sizes of clients around the world. Hire dedicated ruby on rails developer from Bacancy Technology, to choose the right web server, and develop the best Ruby application. Hire dedicated developers from us to leverage the advantages of cost-saving as well as flexibility without various overheads.


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