Enterprise development infrastructure-Preface

The so-called enterprise development infrastructure refers to the infrastructure that provides services for common basic problems that almost all enterprises encounter, such as transactions, logs, and permissions. Many of these facilities are implemented in the form of AOP, and some may be provided in the form of a class library. I have been accumulating AOP components and class libraries in this area.
I have done some AOP implementation on Log and permission management. I have been studying "factory-like services" over the past few days, so I have written this "enterprise development infrastructure" series.ArticleSome ideas may not be very mature, but they are beneficial to you after all. If these articles are helpful to later users, it is even more worth writing :)
Let's start with "factory-like service.

(1) service facilities of similar factories
(2) Event Notification Service