Do SEO people generally know that the SEO is divided into white caps, Black Caps, and even a gray hat. Simply put, if you have read the Google Webmaster Guide, you can understand, in line with the search engine quality specifications and in line with the user experience of the SEO method known as white hat, violating the search
With 360 search to join the domestic search engine, no doubt to the domestic tepid search engine war added a fire. In 360 before the search engine, we can see that domestic has a certai
use the database LIKE, the resources will definitely consume a lot. Would you LIKE to ask how the mature practices are achieved? How do I publish different results to different subscribers?
Please give a detailed description of the problem.
What are the sources of these news? UGC? Capture?
How many of these news? Millions? Tens of millions?
Taking capturing information, news, and tens of millions of data records as an example, the data can be divided into the following parts:1. the captu
the news? Million? Million?
To crawl information, news, tens of thousands of levels for example, roughly divided into a few parts:1. The captured news will have a classification module for each item labeled after the storage2. In order to access the speed, maintain a label in memory-news unique ID array data structure, you can use Redis can also write a single service3. There will be a table to maintain user and subscription topics4. When the user sends a request to obtain a message, go to
by 1 time times.
If a Web page is updated 5 times in a row, the crawl time of the setting is shortened to the original 1/2.
Note that efficiency is one of the keys to winning.
4 "What is the depth of the climb?"
Look at the situation. If you compare cows, have tens of thousands of servers to do web crawler, I advise you to skip this.
If you're like me with only one server doing web crawler, then such a statistic you should know:
Page Depth: Number of pages: how important the page is
0:1:: 10
Search Engine | optimization
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Preface
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Search Engine
I do not know you do not notice when the Internet: some content-rich sites, the total built a content search engine; some large commercial websites or integrated websites are equipped with powerful web search engines, such as Sohu, Sina, Yahoo and so on. Its c
I do not know you do not notice when the Internet: some content-rich sites, the total built a content search engine; some large commercial websites or integrated websites are equipped with powerful web search engines, such as Sohu, Sina, Yahoo and so on. Its convenient search query function so far left people with inde
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First of all, the Internet's d
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[Core Tip] At present, all the search engine surface differences are basically reflected in the sidebar, then in this can be called strategically important sidebar how to win this battle?
Search engine has become a vast number of Internet users indispensable network tools, even if the computer does not understand user
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