Tag：system
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Springboot custom exception handling
Global exception handling @ControllerAdvice @RestController public class GlobalExceptionInterceptor { //Exception exception @ExceptionHandler(value = Exception.class) @ResponseBody public Result exceptionHandler(Exception e){ e.printStackTrace(); LogUtil.writeLog(“error”,”log”,e.getMessage()+e.getStackTrace()); Result result = Result.errorResult(); if (e.getClass().equals(HttpMediaTypeNotSupportedException.class)){ result.setCode(-981); result. Setmsg (“request parameter format error”); }else{ result.setCode(-998); result. Setmsg (“system execution error”); } return result; } //Runtime exception @ExceptionHandler(value = RuntimeException.class) @ResponseBody public Result exceptionHandler(RuntimeException e){ […]
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Configuring Apache virtual host instance for Linux system
installapache,php: yum install httpd php Suppose the IP address of the VPS is 58.130.17.168, and there are two domain names pointing to the IP address, domain1.1 com, domain2. com, Modify / etc / httpd / conf / httpd Conf, add at the end of the file: ServerName 58.130.17.168 NameVirtualHost 58.130.17.168 <VirtualHost 58.130.17.168> ServerName domain1.com […]
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What is the best programming language for algorithmic trading?
The application of programming language must consider many factors, such as strategic parameters, performance, modularity, development, flexibility and cost. Once you want to implement a trading strategy, you need to build the whole algorithm trading system. This includes hardware selection, operating system and system resilience to rare and potentially catastrophic events. Algorithmic trading system is […]
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Introduction to Linux basic commands 13: startup process
firmware(Firmware) refers to the program code at the bottom of the device that allows the device to run. The simple understanding is: software fixed on hardware. Many devices in the computer have firmware (such as hard disk, mouse, optical drive, U disk, etc.), and the first thing to read is the firmware on the motherboard […]
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Detailed explanation of Linux system configuration network
IinstallAnd configurationnetworkequipment IninstallIn Linux, if you have a network card,installThe program will prompt you to give the configuration parameters of TCP / IP network, such as local IP address, default gateway IP address, DNS IP address, etc According to these configuration parameters,installThe program will automatically compile the driver of the network card (first supported by […]
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Some experience of building high concurrency system
Some experience summary on how to build high concurrency system is for reference only. Welcome to exchange. preface infrastructure database framework application standard summary preface It has been a while since I left hungry. During the period of hungry, I began to take over the development and maintenance of Waybill system in 2017, from the […]
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[basic] performance test, from 0 to actual combat (hands-on teaching, very practical)
1、 Performance basis What is the essence of performance testing — >? Simulate the request sent by the user based on the protocol (service simulation),To serverForm a certain load.Focus:Time performance、Spatial performanceInterface independent Performance test classification Performance test (narrow sense) The performance test method is to test whether the system performance meets the production performance requirements […]
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System recall too slow? Upper Milvus × Padderec double sword combination method!
Introduction to the authorLi Yunmei, zilliz Data Engineer, graduated from the computer department of Huazhong University of science and technology. Since joining zilliz, he has been committed to exploring solutions for the open source vector database Milvus and helping users create scenario applications. I like to search for books and recommend natural language processing system. […]
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How to build a single sign on system in a distributed environment | Part 2: Based on oauth2 0 develop SSO core code
What is SSO Single sign on system mainly solves the problem of unified authentication and authorization. In multiple application systems, you only need to log in once to access other mutually trusted application systems.If you want to achieve the effect of single sign on, you must first uniformly manage user information, and other application systems […]
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Wan Da #19, can MySQL disable the MyISAM engine?
The original content of greatsql community cannot be used without authorization. Please contact Xiaobian and indicate the source for reprint. MyISAM has fewer and fewer applicable scenarios. With the launch of MySQL 8.0, InnoDB engine has been fully adopted for system tables, and MyISAM engine is no longer required. In addition, MyISAM engine is not […]
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Uninstall and reinstall the most complete method of windows 10 built-in applications, and give you a clean and refreshing system
Presumably, now the computers of my friends have been upgraded to windows 10. However, do you find that there are many applications in your system that you never use. These applications don’t take up much space. Some are just a launch link. For example, the system comes with a “Disney dream kingdom” game. By default, […]