Rails/Rack Application Internals

A master class for those who want to get acquainted with the internal structure of rails, but do not know where to start. Let's analyze the interaction of the framework parts with each other, with the web server and with the operating system. This will help you more easily understand new gems, libraries, and find problems in the project.

This master class is for you if you want to know:

• What Rails is made of
• The code base and tools are gems that expand the functionality and speed up development.
• How a request gets into Rails
• Browser → web server → application server → application
• What happens at the interface of the application server and what is Rack
• How to Rack isolates requests and simplifies working with requests.
• How Rails works and what it consists of
• Rails as a set of middleware for Rack.
• About other Rails components: models, views, mailers, jobs
• Let's look at how Rails components that are not related to request processing work.

As a result, you will be able to:

• Assemble your own little rails
• Extend the framework if necessary
• Use framework components more consciously
• Fasterly find sources of problems in the code