what is dns search

Title, how to design a subscription system, is the kind by keyword, such as the subscription "small three" news title contains "small three" are to get out, and then subscribe to the "Apple" and then the title contains Apple's give out ... So it might be designed to exclude certain words, If you use a database like words, resources must be very expensive, to ask how the maturity of the procedure is how to

In many cases, the "3B war" has come to a dead start, or has entered a stage of secretly rivalry. In this period, Google China was playing a dirty, embarrassed, and Sogou get profit, now has a good momentum of development. The latest search market in addition to these several protagonists in the opera, another different search engine has become more and more popular attention, that

also to save the corresponding relationship in the cache, in case the next time another user query, you can directly return the results, Speed up network access. Knowledge Expansion: 1) What is DNS. DNS (domain Name System), a distributed database of domain names and IP addresses that are mapped to each other on the

users' attention to the so-called "vertical search. Some viewers believe that, after Baidu, Google, and Yahoo connect share nearly of the internet search market, latencies in the search market may be able to share a portion of the vertical search. However, due to the fuzzy definition, vertical searches refer to differ

we'll take the Chrome browser as an example:1. Domain Name resolutionFirst, the Chrome browser will resolve the IP address of the www.linux178.com domain name (the exact name should be the hostname). how to resolve to the corresponding IP address ?①chrome Browser will first search the browser's own DNS cache (cache time is relatively short, about 1 minutes, and

address?①chrome Browser will first search the browser's own DNS cache (cache time is relatively short, about 1 minutes, and can only hold 1000 cache), to see if their own cache has www.linux178.com corresponding entries, and has not expired, Resolves to this end if there is no expiration.Note: How do we view Chrome's

Facebook Graph Search (FGS) is Zuckerberg's "first huge product release", so its importance cannot be ignored. He also said that this is not web search, so it is not competing with Google. We should trust Zuckerberg's First sentence, but we cannot fully trust him's second se

analysisFirst, the Chrome browser will resolve the IP address of the www.linux178.com domain name (the exact name should be the hostname). How to resolve to the corresponding IP address?1Chrome will first search the browser's own DNS cache (the cache time is relatively short, about 1 minutes, and can only hold 1000 cache), to see if their own cache has www.linux

（转自http://www.linux178.com/web/httprequest.html）写的太好了，转一个。For the HTTP protocol, refer to the following:HTTP协议漫谈 http://kb.cnblogs.com/page/140611/HTTP协议概览 http://www.cnblogs.com/vamei/archive/2013/05/11/3069788.html了解HTTP Headers的方方面面 http://kb.cnblogs.com/page/55442/When we enter www.linux178.com in the address bar of the browser, and then go to enter, enter this moment to see what happened to the page?Domain name resolution--Initiates a TCP 3 hand

The recent Internet listen to a lot of is the ecological chain of Alibaba, Beijing East also want to build the ecological chain of electric quotient, in fact, each industry do a good job to do their own growth of the ecological chain, a site of the ecological chain should be search + site + user's fusion body. Since the Baidu connection algorithm to update the various statements, to crack down on bad websi

chapter we will introduce the installation and management of the Pear Library Suite, this chapter is very important, before using pear, it is necessary to learn these basic kung fu, although a bit complex, but learn to benefit from the infinite, so that your PHP program development efficiency doubled, function with step-up. The 4th chapter is a simple example of

Since the Baidu connection algorithm to update the various statements, to crack down on bad websites, to crack down on links, to crack down on horse sites, in fact, White Horse hope that the Chinese search market better have a healthy search of the ecological chain, we all know that the nature of Baidu is a search comp