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[TOC] Stateful VS Stateless Almost all applications need to be authenticated and authorized. For example, user login with account password is an authentication process. After successful login, the system will allow users to access related resources under their account, which is called authorization.The complication is that users have the conc ...

Today I encountered a Received fatal alert: handshake_failure problem in my project. The direct translation just failed. To be honest, this is the first time I have encountered this problem.In forums, in the sea of technical blogs, I still haven' ...

Middleware and Context Processor Django Middleware It is a lightweight, low-level "plug-in" system that can intervene in Django's request and response processing and modify Django's input or output. Activating Middleware It needs to b ...

Reference resources: http://www.redis.cn/commands/eval.html https://www.runoob.com/redis/redis-scripting.html Redis has supported Lua scripting since version 2.6.0. By embedding the Lua environment in the server, Redis clients can use Lua scripts t ...

1. Introducing dependencies #Introducing sql-dependent Akmi import sqlalchemy #Introducing various data types from sqlalchemy import Column, Integer, String, ForeignKey, UniqueConstraint, Index,CHAR,VARCHAR,Date #Create a database connection from sql ...

I. Basic concepts 1. Unicast: point-to-point, private chat 2. Multicast, also known as Multicast (Special Crowds): Multi-person chat, publish and subscribe 3. Broadcast (everyone): Game announcements, publishing and subscribing 2. Springboot Inte ...

Functions of logs Used to record all kinds of events occurring in the running of system and program Reading logs helps to diagnose and solve system failures Classification of log files Kernel and System Log:It is managed by syslog system service, and the log format is basically similar. User logs:Record system user login and exit informa ...

[tcp] nginx seven-tier load balancing Overview of nginx load balancing When our Web servers are directly user-oriented, they often carry a large number of concurrent requests. It is difficult for a single server to load. I use multiple Web servers to form a cluster. The front-end uses Nginx load balancing to distribute requests to our back-end ...

1,Cookie HTTP is a stateless protocol. Example: Open the home page of a domain name, and then open other pages of the domain name, the server can not identify visitors. That is, the same browser visits the same website, each visit has nothing to do with it. Cookie's principle is that after the client browser first accesses the server, the ser ...

truth_or_dare Gif HD source address: https://user-images.githubusercontent.com/15868458/63646763-8ab2ed00-c74a-11e9-81e8-e224a0ef375c.gif Truth Adventure Online Address: https://zhaoolee.com/ProgrammingWithChrome/zhaoolee_true_or_dare/ True Talk Big Adventure is a simple and easy game, the specific rules are usually 2 peop ...