Programmer Think

1, Overview Log analysis is the main means for operation and maintenance engineers to solve system faults and find problems. Logs mainly include system logs, application logs and security logs. System operation and maintenance personnel and developers can understand the software and hardware information of the server through the log, check ...

Although the MVVM architecture was also used in previous projects, I was not familiar with the overall MVVM architecture because I did not build the overall framework myself, so I built and implemented the MVVM architecture myself this time.The components used by MVVM architecture include ViewModel, LiveData, ViewBinding/DataBinding, etc. these ...

preface This paper briefly introduces a kind of design pattern, observer pattern         (previous article) design pattern - Decorator Pattern_ Autumn rain - CSDN blog catalogue 1, Definition and characteristics of observer model 2, Structure of observer model 3, Code example 1, Definition and characteristics of observer model Definit ...

[source code analysis] PyTorch distributed elastic training (4) - Rendezvous architecture and logic 0x00 summary In the previous article, we have learned the basic modules of PyTorch distribution and introduced several official examples. Next, we will introduce the flexibility training of PyTorch. This is the fourth article to see the str ...

Feign declarative remote call 1. Introduction Feign is a declarative HTTP client. Its purpose is to make remote calls easier. Feign provides the template of HTTP request. By writing a simple interface and inserting annotations, you can define the parameters, format, address and other information of HTTP request. Feign integrates Ribbon (l ...

With the continuous upgrading of the business structure of vivo mall, the more complex and changeable marketing methods of the whole mall have been split into an independent promotion system. In the initial stage, the split promotion system is only responsible for the maintenance of the playing method of marketing activities. The most import ...

Last week, I finally finished reading the beauty of design patterns. I always wanted to write something to practice. It happened that I wanted to reconstruct the company's upload library recently, so I had this article. (it's just for learning and practicing. If you have any suggestions, the architecture boss can spray it gently) 0x1. Miscella ...

1, Thread safety is embodied in three aspects 1. Atomicity: provides mutually exclusive access. Only one thread can operate on data at a time (atomic,synchronized); 2. Visibility: a thread's modification of main memory can be seen by other threads in time (synchronized,volatile); 3. Orderliness: one thread observes the execution order of ...

background The company has a channel system, which is specially connected with three-party channels. There is no business logic. It mainly works on message conversion and parameter verification, which plays a connecting role. Recently, after optimizing the response time of the interface and the code, the time still can not meet the requiremen ...

Spring Boot starter We know that Spring Boot greatly simplifies the initial construction and development process of the project, which are completed through the starter provided by Spring Boot. Pinda general permission system is developed based on Spring Boot, and some basic modules are starters in essence, so we need to have a comprehensive a ...