All modern frameworks offer protection against CSRF attacks, so these attacks are not as common anymore.
However, this does not mean we don't need to understand what they are and how to protect ourselves from them.

In this article, I will explain what a Rails engineer needs to know about CSRF.

Let's say, you have a Rails app packed inside docker container. You also have a pg server installed directly on your virtual machine (well, just to save your money). This can be a problem, because on production you should allow only specific ips to have a connection to your database.

How you can do it then? This is a tutorial.

If you are using Amazon Linux 2 and want to install SSL Certificate for your domains, certbot is a right call.

This is how you can do it, and also additional info about how you can renew existing certificate

Simple code to run one spec multiple times:

for i in `seq 10`; do rspec spec; done

Redis is quite easy to use, it's just basic key->value database which can be used in many different cases.

Let's assume, we already have Redis server setup in our application, and only need to use it.

Here is my small cheatsheet which will help you to extend any Ruby class.

I found out it very helpful and i hope, it will also be a nice help for you.