Posts
The rate limits of Let's Encrypt
Let’s Encrypt provides rate limits to ensure fair usage by as many people as possible. The main limit is Certificates per Registered Domain, (50 per week). A registered domain is,...
Default parameters in JavaScript
Default function parameters allow named parameters to be initialized with default values if no value or undefined is passed.
Simple JS implementation of the bitmap fonts
When writing WeChat games, one of the problems that I often encountered was using various custom fonts that are not pre-installed by most user devices. Since Wechat game platform have...
Resolve failure of updating wordpress
Updating wordpress can be easily done by clicking the buttons. Some people will never update wordpress once setup it to avoid unnecessary crashes. However, it is recommended to update wordpress...
Redirecting from HTTPS to HTTP?
You can’t redirect it cause the client won’t connect to https on port 443 without a valid certificate. What’s useful with this? Note Just let you know and save you...
Commonly used pip commands
pip is a package management system used to install and manage software packages written in Python. Many packages can be found in the default source for packages and their dependencies...
Commonly used firewall-cmd commands
The command-line tool firewall-cmd is part of the firewalld application, which is installed by default. It can be used to make permanent and non-permanent runtime changes. Enter the following command...
Commonly used constants in PHP
These constants are defined by the PHP core.