So, let’s talk about the technologies used in this blog, just for reference.
Server
The blog is hosted on a DigitalOcean droplet，$5/month，1GB RAM，25GB SSD. I have only used AWS and Digital Ocean before, and apparently, Digital Ocean is the cheaper one. I’ve once also thought about switching to Linode. At that time, DO only got 512MB RAM, so I often run into situations that my programs get killed due to insufficient memory, which was pretty annoying. But just when I was about to pull the trigger, Digital Ocean decided to increase their RAM, so that’s the end of it.