what is dns cache

1. Install the deployment DNSYum Install Bind-ySystemctl Start namedSystemctl Enable namedSystemctl Stop FirewalldSystemctl Disable FIREWALLDMaster configuration file:/etc/named.confChild configuration files:/etc/name.rfc1912.xonesData

In the process of finding a domain name through DNS, it is possible to go through multiple intermediate DNS servers to find the specified domain name, so finding the domain name on the DNS server is a very expensive operation. In Java, the DNS cache

DNS servers -- An Internet Achilles 'heel DNS server-a critical weakness of the Internet (Endurer Note: An/one's Achilles heel fatal injuryAchilles is one of the Greek gods, "Achilles ". It is said that Achilles's ankle seems very small, but it is a

The 1.ping command returns a public network IP address, but this IP address is inconsistent with the current public network IP of the machine where the peanut shell client is located For example Ping ping-is-no-good.gicp.net, the IP returned is 59.3

1th website front-end performance optimizationThe front-end has changed a lot in recent years, various tools, libraries, frameworks concurrency. Nevertheless, the idea of optimizing the front-end performance of the website has been largely unchanged.

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

How to clear DNS query cache in Linux/Unix/Mac In Linux, I use a dial-up connection to access the Internet. Frequent dial-up disconnections cause DNS problems. How can I clear the DNS Cache using shell commands in Linux/Unix distributions? In

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

With IE Kernel browser friends, may inadvertently encounter such a problem:When you open a webpage, the browser "bang" jumps out of a prompt box "Internet Explorer cannot open Internet sites ... The operation was terminated. In most cases, the page

Analysis on DNS caching in Nodejs and nodejsdns Cache I accidentally saw an article about sending http requests under nodejs without caching dns results. This means that if you write an http collection program based on nodejs and do not provide dns

I. ARP spoofing-based data stream redirection1.1 ARP and Its workflow ARP is short for Address Resolution Protocol (Address Resolution Protocol). RFC826 describes its functions as follows: resolve the network layer protocol address of the computer

This is a very interesting thing, through which we can better understand the HTTP request.Entering a URL in the browser's address bar goes through the following steps:　　The first step: Domain name resolution---Browser search its own DNS cache, if

basic processes and principles of user access to the site (most of all, none)Original: http://blog.csdn.net/yonggeit/article/details/72857630Directory (?) [-] User access to the site process framework DNS parsing principle TCPIP

I use dial-up connection to the Internet under Linux, frequent dialing disconnection causes the problem of DNS. How do I use shell commands to clear the DNS cache under the Linux/unix release? Under Ms-windows, you can use the ipconfig command to