• Only Open ports to 0.0.0.0 for Web Servers such as Nginx

I was tring to have some custom nginx logs for different server names, so I read the doc for log_format and access_log, and then tested it with the following code.

I have been confused about the ‘lazy’ parameter in SQLAlchemy’s relationship() for a long time, and I came across with this problem again today when dealing with a project that needs a many-to-many relationship. As a result, I am tring to figure it out when to use each lazy strategy and summrize it here.

Definition

• Dont’t Repeat Yourself(DRY).
• An optional add-on; without a Mixin, the object would work just fine.
• Can override, or inject code into, the target’s methods

For some reason, when entering tmux from iterm, the $PATH was somehow reset which leads to mismatching of Conda’s Python from the system’s one.

• minimizing mem usage by data sharing between similar objects

• a factory produces different products according to its input request.

• a better implementation that scales

• Dynamically adding behaviors to exist objects
• Aggregation(Containing old objects)

creational: concerning how to instantiate an object e.g. factory, singleton

Next you can update your site name, avatar and other options using the _config.yml file in the root of your repository (shown below).