Tag：The server
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Time：2021-8-2
Redis learning replication and three deployment modes What is replication Single machine redis usually cannot meet the project requirements. It is generally recommended to use cluster deployment for multi machine backup and deployment of data, so as to ensure data security. At the same time, replication can also quickly repair the data when redis is […]
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Time：2021-8-1
catalogue What is mongodb?: Environmental specifications: To install mongodb Yum repository in CentOS 8: Set resource limits for mongodb in CentOS 8: To install the mongodb database on CentOS 8: Create SELinux policy for mongodb on CentOS 8: Create administrator user in mongodb: Enable access control in mongodb server: Configure mongodb service for network access: […]
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Time：2021-8-1
Vue plug-in Vue plug-ins are divided into two types: cli plug-ins and service plug-ins Service plug-in The service plug-in will be automatically loaded when a service instance is created — for example, every time vue-cli-service When a command is invoked in a project. The plug-in we want to complete next is executing the commandvue-cli-service publishWill […]
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Time：2021-8-1
preface Session: a session contains multiple requests and responsesNote: a session means that the browser sends a request to the server for the first time, and the session is established until one party disconnects Function: share data between multiple requests in a session Method:(1) Client session Technology: cookies(2) Server side session Technology: session Cookie Concept: […]
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Time：2021-8-1
1、 Warm up before reading What is keep alive 1. Keep alive is just a suggestion for the client We open Baidu home page to further view the header. As shown in the figure, we can see a line in the request header: Connection:keep-alive Keep alive is to notify the server that after the HTTP […]
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Time：2021-8-1
TCP / IP protocol stack is mainly divided into four layers: application layer, transmission layer, network layer and data link layer,Each layer has corresponding protocols, as shown in the figure below Conceptual understanding: IP: network layer protocol（ (Expressway) TCP and UDP: transport layer protocol（ Truck) TCP/IP: represents transmission control protocol / Internet protocol, which refers […]
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Time：2021-8-1
This article was first published in:Walker AI Rate limiting is usually implemented as a defense measure of the service. Services need to protect themselves from overuse, whether intentional or unintentional, to maintain service availability. In the development process of the flash project, when you encounter the need to restrict the interface and don’t want to […]
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Time：2021-8-1
#View hardware time hwclock -l #View the time and date of the system timedatectl status #View the available time zones of the system timedatectl list-timezones #Set system time zone timedatectl set-timezoe ZONE #Synchronize system time from the clock server (NTP) chronyc makestep
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Time：2021-7-31
For an online game, every service suspension will have a certain impact on player activity, user experience and operation data, so that most game service suspension upgrades are carried out in the early morning. The upgrade of tcallusdb can make the game run as usual without being affected at all. How does the upgrade of […]
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Time：2021-7-31
As the second son of the siege lion, in addition to working diligently, he also runs a personal blog in private. With the wonderful and rich articles in the blog, we have gained a lot of fans. Reading more articles and reading fan messages is the supreme happiness of Er Gouzi. On this day, er […]
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Time：2021-7-31
Summary:Recently, supply chain attacks occur frequently. Supply chain attacks and blackmail software attacks are becoming an important means for hackers to make profits, and Zhaocheng’s social harm is huge. How to effectively prevent supply chain attacks is becoming a problem that software suppliers need to think about. Google’s SLSA Supply Chain Integrity framework gives us […]
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Time：2021-7-31
1、 Basic concepts Socket.IOIt is a real-time application framework based on node.js. It is widely used in instant messaging, notification and message push, real-time analysis and other scenarios. Websocket comes from the growing demand for real-time communication in web development. Compared with the polling method based on HTTP, it not only greatly saves the network […]
