Here’s a quick summary of the kind of questions that a Ruby on Rails development business could ask during a technical interview. This is not a complete list, and it may be supplemented with other Ruby on Rails software development questions.
What are some of the benefits and drawbacks of Ruby on Rails?
The benefits include increased programmer efficiency, built-in testing, open sources, and metaprogramming. The most significant constraint is the sophisticated collection of tools necessary to construct a really unique software, although basic solutions are fairly simple to develop.
What are software design patterns in Ruby on Rails?
There are other design patterns to choose from, but the most common ones include Service Objects, View Objects, Form Objects, Value Objects, Observer patterns, Policy Objects, and so on.
What exactly are Ruby gems?
Ruby gems are libraries designed to extend and improve the language’s capabilities.
Which Ruby gems do you think are the most useful?
This open question allows applicants to discuss their previous RoR experience and provide insight into their coding approach.
Explain the significance and need of the DRY code.
DRY, or Don’t Repeat Yourself, is an RoR credo that encourages developers to make their code as short as possible.
Name a few frequent Rails errors that cause longer load times.
The absence of indexes on database columns; the use of an excessive number of gems; making the read timeout value too high; and so on.
What are your favorite deployment tools, and why?
This question will assist you in understanding the candidate’s past experience and if he or she is familiar with the tools that your organization prefers. Because the question is open, the applicant may respond with Jenkins, GitLab, or Capistrano.
What exactly is an active job?
Active job is a job declaration framework that allows jobs to operate on multiple queuing back-ends.
In RoR, how does garbage collection work?
Garbage collection removes pointer programs and objects to make room for more critical operations.
What exactly is a Rails engine?
Rails applications may be thought of as a collection of engines that provide the application with various functionality. Rails engines do not function independently; they only function when they are integrated into the main Rails application.