limit, especially Ext3, later moved to multi-layered structure. Recent improvements in kernel 2.6 may have allowed EXT3 to allow large directories, but it's not a good idea to store a large number of files in a file system.-A large number of requests per second, because Web pages may display 60 thumbnails on a page-Apache behaves badly under this high load-Squid is used in the front-end of Apache, which works for some time, but fails due to increased load. It makes 300 requests per second into
Few users buy directly without seeing a product. In general, the user must at least see the product picture before making a final decision. This is why the sale of products on the Internet, sellers to spend a huge amount of energy to display products, with clear photos and take the heart of the copy and other "routines" to complete the sales process. In the Internet product marketing, the picture plays a vital role. Pictures can help marketers get a pretty good conversion rate from
, especially the IO operation, the system energy consumption is also high, so we need to separate the image on the page, which is basically a large web site will take the strategy, They will use a separate image server, or even a number of image servers. Such a architecture can reduce the server system pressure of page access requests, and can ensure that the system does not collapse due to picture problems, the application server and image server can be dif
Today, we will talk about how to manually crawl Iqiyi and Youku and other video site video This method is suitable for many video sites. Because some websites do not support us to use some software such as the Wighi of the analysis of the download, so I found this method, originally Youku is possible, but now Youku or not support the analysis of the Wighi mouse. These two pages are the address of the original post, in fact, I know this method before,
Symfony supports multiple sites (applications). The standard release of Symfony only supports one site. although you can use different routing rules based on different domain names through Host configuration in the routing system, this can also implement features similar to multiple sites, but the disadvantages are als
easy to build distributed message queues, and if you are interested, you can also refer to my other blog post: using Redis as a Message Queuing service scenario case Third, the use of distributed services to create a reusable business platform If distributed Message Queuing decomposes the system coupling through the message object , the different subsystems process the same message, then the distributed service decomposes The system coupling thro
reviews, in addition to provide developers with some free source code for everyone to learn. The comparison of the main similar third-party services is very powerful, can be based on their own needs to identify the appropriate third-party services.Wikipedia WikipediaThis site is one of the best resources for querying or learning almost any concept. For example, as a senior Java developer, you might just want to understand some concepts and don't want to study in depth. Here is a good place to c
SQLite is a lightweight database system similar to access, but it is smaller, faster, with larger capacity and higher concurrency.
Why is SQLite most suitable for CMS? It doesn't mean that other databases are not good. Oracle, MySQL, and sqlserver are also excellent DBS, but they have different design objectives and features. Therefore, they are only applicable to a specific application scenario, there is no absolute difference between good and bad.
Download sites have become a popular form of websites on the Internet, which spring up like mushrooms. However, observing these many download sites gives people the feeling that they are visiting the same website. So how can we stand out from so many download sites? Let me talk about my views:1. Unique survivalIf your download site is
Several years ago, I complained that Apache was not running PHP securely. as long as one site was taken down, other sites on the server would suffer. At that time, I thought this was really bad compared with IIS, because in IIS, you can set an anonymous account used for site or even directory access in security, as long as the accounts used by different sites are
Search engine
A user asked: For a website, the search engine will retrieve its subdirectories under the page? For examplehttp://www.companyname.com/subWeb/pagename.htm, does the search engine index? A perfunctory answer is "yes". For a subdirectory contained in a site, all search engines provide traversal of subdirectories, provided that the link to the subdirectory of the layer provides a navigation configuration and URL structure that the search engine can follow up on.Network directo
Tags: editor need to set src wordpress Master Networking discuz! ContentXAMPP is a very convenient local Apache + php + MySQL debugging environment, in the local installation test WordPress and other various blogs, forum procedures very convenient. Today we are going to show you how to use XAMPP to install multiple websites locally. In general, we only need to put the website program into the Xampp/htdoc directory, and then enter the IP address in the browser HTTP://127.0.0.1/or enter the domain
they are based on the wide area of the network search and aggregation-that is, basically for all Chinese BBS; so I don't think of them as "vertical". And the third type of search mode, is the cool network for the representative, the real "vertical search"-they do not index a large number of sites, direct index related information on the host site can be. And according to the business scope of cool, I analysis, such as renting this piece, they index t
easy to build distributed message queues, and if you are interested, you can also refer to my other blog post: "Using Redis as a Message Queuing service scenario case"
Third, the use of distributed services to create a reusable business platformIf distributed Message Queuing decomposes the system coupling through the message object , the different subsystems process the same message, then the distributed service decomposes The system coupling th
Apache Virtual Hosting is a solution that allows more than one website to run on the same machine. There are two kinds of virtual hosts, one is called IP-based (ip-based) and the other is name-based (name-based). The existence of a virtual host is transparent to the user. IP-based virtual hosts:For IP-based virtual hosts, each virtual host must be equipped with a separate IP. This means that your server must have multiple IP addresses. In this way, we can do a local experiment to configure. Conf
addition to reading the files on this site.
Assuming that the site is in/data/wwwroot/site.cn, use the/tmp,/DEV/SHM,/proc directory at run time, you can set this in php.ini
Open_basedir =/data/wwwroot/site.cn:/tmp:/dev/shm:/proc
If PHP uses include, require, fopen, gzopen and other functions to load other directory files, you will get an error:
Require_once (): Open_basedir restriction in effect. File (file.php) is not within the allowed path (s): (path)
Warning:require_once (file.php): Fa
"Introduction" To some extent, E-commerce can be said to be the meaning of web analytics. This article explores one of the most common metrics for e-commerce sites: Abandonment Rate.
Direct E-commerce analysis is less involved in this blog area, because I have been "immature" that E-commerce site analysis and our usual site analysis is not fundamentally different. After all, even if it is not an e-commerce
This is not about how to solve the problem of path rewriting or how to configure, but rather to explain the concept and role of site, application (application) and virtual directory (VM), and the similarities and differences between these three things in IIS6 and IIS7. Because sites, applications, and virtual directories are sure to be encountered when we build websites on IIS, their concepts are so vague (at least for me). I found some information on
directories)Method: Right click on a website name/add virtual directory or applicationIn the Popup interface, write an easy-to-identify alias, select the path to the site you want to add, here is the F:/testClick OK, at this time we can see a haha site under the site, it appears in the directory of the site, in fact, are stored separately on different disks, just a virtual path in this showWhen you are done, open the haha/bbb.aspx in the browser and
First, case backgroundMy friend Helen has been using the online dating site to find the right date for her. Although dating sites recommend different candidates, she doesn't like everyone. After a summary, she found that there were three types of people who had intercourse:(1) A person who does not like;(2) A person of general charm;(3) A person of great charm;Despite discovering the rules, Helen is still u
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