How to use EXPLAIN ANALYZE in Rails 6

Category: Ruby :: Published at: 06.07.2025

As you might now, Rails 7 allows us to use explain with parameters.

From now on, we can use it for example with analyze: true flag, which gives us much more information about the query.

In Rails this option is not available, but we can use some tricks to show the result simply.

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How CSRF Tokens work in Ruby on Rails?

Category: Ruby :: Published at: 16.12.2024

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.

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How to easily connect your docker container with a postgres on EC2 instance

Category: Ruby :: Published at: 11.10.2024

Let's say you have a Rails app packed inside a 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 can you do it then? This is a tutorial.

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How to renew SSL certificates with Certbot

Category: Ruby :: Published at: 29.09.2024

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

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Run one spec multiple times

Category: Ruby :: Published at: 22.05.2023

Simple code to run one spec multiple times:

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

How to use basic Redis commands?

Category: Ruby :: Published at: 30.01.2023

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.

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