The default limit for open files is 1024 in Docker containers. In Unix systems, you can increase the limit by following command: $ ulimit -n 90000 which sets the limit to 90000. However, Docker does n...

I’m spending some time with Go on my free time. While its abilities fascinate me and expand my vision, I feel some back-steps time to time in the standard library. Here is how to generate a rand...

nginx is a web server used by many web sites, you can follow the link for further information. In this post, I’ll briefly talk about how to serve two sites from the same port. Why? Prices, of co...

Repository health becomes an issue for large projects. If you use feature branches, you’ll have a waste of merged-unused-branches. I have prepared a bash script to find these branches and the au...

AWS ECR (Elastic Container Registry) is a managed Docker hub with customizable permissions. It’s easy to setup with a single account and AWS’s documentation is pretty good enough even if y...