Programmer Think

This paper mainly explains how to log with Log4Net and the advantages of logging in the process of program development. It can provide a precise environment for application runtime, and it can help developers find the Bug in the application as soon as possible. Once the Log output code is added to the program, the log information can be genera ...

1. Basic concepts Hierarchical System of categories Logs Where can the appenders log be printed, either as a file or as a terminal The layouts log output format, which defines an output mode similar to that in printf. There are three kinds, followed by examples, the three are: basic, simple, pattern. The level of priority log is EMERG, ...

Not original, turn from https://blog.csdn.net/backbug/article/details/78655664 Brief Introduction to commons-logging Introduction: Jakarta Commons-logging (JCL) is the earliest log facade interface provided by apache. Provides simple log implementation and log decoupling. JCL can choose whether to use Log4j (or other su ...

What is Mybatis? MyBatis is an excellent persistence layer "semi-automated" ORM (Object Relational Mapping) framework, which encapsulates the code of JDBC operation database process internally, so that developers only need to pay attention to the SQL statement itself, without wasting any more energy to deal ...

In our last blog post, we used direct exchange instead of fanout exchange. This time, let's look at topic exchange. Introduction to Topic Exchange Topic exchange is similar to direct exchange in that it matches routing key and binding key, but topic exchange can set multiple criteria for routing key. direct routers are similar to exact queri ...