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1 Why do I need WebSocket WebSocket is produced to meet the growing demand of real-time communication based on Web. In the traditional Web, in order to realize real-time communication, the general way is to send requests continuously by using HTTP protocol, that is, Polling. However, this method not only wastes bandwidth (HTTP HEAD is relativel ...

1. The longest chain that a number pair can form 646. Longest number pair chain (Medium) Method 1: greedy algorithm Sort all pairs according to the size of the second number. The first step is to select the pair with the smallest ending number. Then, each step selects the number that does not conflict with the last selected number pair and ...

Project scenario: Recently, the requirement of the project is to obtain a new token if the token fails when requesting the interface, and finally use the new token to request the original requested interface. So here we will use the response Interceptor, which is used in my project EasyHttp , is the encapsulation of okhttp. You can have a look ...

When Python needs to match the name of a module, it can be brought into Python through the regular expression. The approximate matching process of regular expressions is: 1. Compare the characters in the expression and text in turn, 2. If each character can be matched, the matching is successful; Once there are characters that fail to match, t ...

Recently, major vulnerabilities have been revealed in log4j2. The company also urgently requires all projects to check themselves and upgrade the version of log4j to a safe version At present, we are using springboot version 1.5.9, and the built-in log4j2 is version 2.7. Although mybatis is integrated, the built-in version of log4i is still b ...

User login authentication is a very common business in Web applications. The general process is as follows: The client sends the user name and password to the serverAfter the server-side verification is passed, save relevant data in the current session, such as login time, login IP, etc.The server returns a session to the client_ ID, which the ...

SpringCloudAlibaba+Nacos integration Gateway Spring cloud gateway combined with Sentienl to implement gateway current limiting mechanism Spring Cloud Gateway filter factory Spring Cloud Gateway contains many built-in routing assertion factories. All of these assertions match different attributes of the HTTP request. You can combine multipl ...

The words written in the front HTTP/1.1 has gone through a long development process from 1991 to 2014: HTTP/0.9– 1991HTTP/1.0– 1996HTTP/1.1RFC 2068– 1997RFC 2616- 1999RFC 7230- 2014 This means that various servers and clients in the Internet may have many security problems, which will also create opportunities for HTTP smuggling attack (HTTP ...

1. Gateway overview The so-called API gateway refers to the unified entrance of the system. It encapsulates the internal structure of the application and provides unified services for the client. Some public logic independent of the function of the business itself can be realized here, such as authentication, authentication, monitoring, ro ...

Recommended in this article“ Free DDNS ”For free DDNS service at home, if you have wired commercial bandwidth and have no home bandwidth, you don't need to consider DDNS, unless it is business width, which is DHCP public network IP. Such business width is generally used for illegal trading. There are many people, such as business wi ...