Firebase Setup for Monorepo: Firebase + Yarn + Webpack Firebase cli doesn’t support monorepo, not yet when the time I am writing this blog…

If you are getting below “Javascript heap out of memory” error when deploying your serverless project, try to run below command first before…

My wife, Haijie Liu, suddenly passed away on Aug 28 2020 after suffering couple months of depression. Only then I realized she was the angel…

Recently in one of my project I need to secure my REST API using JWT. Most of my previous projects were using serverless architecture and I…

Today (May 2nd, 2020) I found out that AWS Lightsail Montreal region Zone D basically is useless. You cannot create any instance in zone D…

Today I encounter one issue with jest which is related to using super in arrow function in Class. Exact error shown below (I removed some…

When a typescript Class has a long list of properties and methods, it is really painful when it comes to instantiate it. Let’s take a look…

An SSL VPN is a type of virtual private network that uses the Secure Sockets Layer protocol — or, more often, its successor, the Transport…

Today when I worked on a new Freeswitch server and tried to configure the SIP truncking with Twilio, I found out that I can recieved call…

Today I passed the exam for AWS Certified Solutions Architect - Associate, and officially became certified! And I got this interesting…

Recently I need to allocate IP to clients via multiple NICs using dnsmasq in my home server. Originally I just started multiple dnsmasq…

The reason I bought Pi Zero W is for one of my personal project: building a WiFi AP and VPN gateway combo device. For historical reason, I…

Today I received a Pi Zero W which I ordered last week from adafruit. Sweet! So I start playing with it. As a long time Raspberry pi player…

Finally I start blogging! This is not a simple blog but a blog powered by the so called latest technologies: react, gatsby, S3, CloudFront…