Docker

Docker vs VM

Domain Name Server

How DNS works

Git delete some commits in history

Delete a bad commit

How to untrack files in GIT

I accidentally commit some files that should not be tracked, e.g. folder .gradle, IntelliJ IDEA project file *.iml… Obviously that’s not good. Searching around, I found a thread in SOF, in summary:

• Step 1: git rm --cached <files/folders>
• Step 2: git update-index --no-assume-unchanged <files/folders>
• Step 3: Add to .gitignore

Mapping ports and sub-domains with NGINX reverse proxy

This is simple step by step guide to setup a Reverse Proxy using nginx in Linux. Installing step takes Ubuntu for example, but you can go to nginx page for other platform install guide.

Simple explanation about indexing data

Reference from SoF