The session mechanism for login: HTTP is a stateless protocol, and every request a browser makes is independent of the others. But not every HTTP request is unrelated to state, so the browser and the server have to jointly maintain a state — this is the session mechanism. One approach: the first time the browser sends a request to the server, the server returns a sessionID to the browser, and every subsequent request from the browser carries that sessionID to verify the same user.

The platform currently includes multiple subsystems and multiple versions, and all versions use the same operations system. To make it easy for users to use multiple versions, we need to bind their QQ and WeChat accounts. In addition, to minimize the chance that a failure in some login system leaves

1. What Is DDoS Take the Spring Festival ticket rush: the moment high-speed rail tickets go on sale, people all over the country send connection requests to the 12306 servers. The 12306 servers then either stop responding or respond slowly to web requests. That constitutes a DDoS attack — through a large number of concurrent requests, the target service is forced to become degraded, or even to shut down.

1. Django Built-in Permission Management 1.1 Permission Categories Permission Used to define User A’s permission on Task. User If User A has permission on Model B, then User A has the corresponding permission on all instances in Model B. The user_permission field of the User object is used to manage

1. Introduction to BWAPP buggy web Application, abbreviated BWAPP, is an open-source web application that packs in all kinds of common and recent vulnerabilities, with the goal of helping security enthusiasts, developers, and students find and prevent web vulnerabilities. It contains more than 100 vulnerabilities, covering every major known web vulnerability, including the OWASP Top 10 security risks, and most importantly it already includes the OpenSSL and ShellShock vulnerabilities.