VPS

How to secure your VPS with Fail2ban

How to install and configure Fail2ban on Centos and Debian to protect your virtual private server

Read
SEO

Generate dynamic open graph images for blog posts

Learn how to generate social cards for Twitter, Facebook, Slack with the blog post title, using og-image service by Vercel. And how to integrate it in a gatsbyjs blog.

Read
NodeJs

Asymmetric encryption in Nodejs

How to generate public and private key, and how to encrypt e decrypt using this keys

Read

How to determine if you are inside the popup or inside a tab (chrome extension)

How to find out is the user is in the popup or in a tab to handle different actions

Read