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.

If you have any issue with MySQL and you want to completely reinstall it on your machine.

This is a quick guide, how to do it:

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

When you try to run application, for example on Amazon Linux server, and trying to connect it
with a domain with the use of NGINX you can encounter some problematic issue.

You're starting server but, and it works, but when you try to make POST request, you're getting 422 Unprocessable Entity error.

This is because your application is still sending localhost Header, an this is not recognized by the app.

To fix this you need to modify your NGINX configuration

There are two simple ways to run application on Amazon EC2.

One is to run screen command and run application there as a process.

Second one, probably better, is to create SystemCTL Service which you can run later.

This is how to do it: