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Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host Technology Hall I server suffered hackers long-term attack, special to do these days to do some useful security aspects summed up, 　　To facilitate access later, I hope this thorough understanding hacker attack, special thanks to "cold rainy Night" some tips. Windows 2003 server security settings method 0. Get rid of weak password, increase ...

When designing a module, the module should be extended without modification, so that the module's behavior can be changed without modifying the source code. Statement: Software entities (classes, modules, functions, etc.) should be extensible, and it can be done without modification, or rather, function entities should: (1) The extension is open when the requirements of the application change, we can extend the module so that it has the new behavior to meet the change. That is, we can change the function of the module (2) When the change is closed to the module to extend ...

Java EE and http://www.aliyun.com/zixun/aggregation/13480.html "". NET platform, figure 2 shows all the similarities between the Java EE and the platform. As you can see, many. NET platform features no corresponding function in Java EE. In some cases, as to whether or not to support these features, if supported, what is considered to be a clear decision, note: To understand unfamiliar abbreviations, check the glossary ...

This article is my second time reading Hadoop 0.20.2 notes, encountered many problems in the reading process, and ultimately through a variety of ways to solve most of the. 　　Hadoop the whole system is well designed, the source code is worth learning distributed students read, will be all notes one by one post, hope to facilitate reading Hadoop source code, less detours. 1 serialization core Technology The objectwritable in 0.20.2 version Hadoop supports the following types of data format serialization: Data type examples say ...

One, the mail system installs 1, the package installs Postfix+courier-imap+cyrus-sasl+pam_mysql+mysql this kind of installation method is simple and easy, installs under the Debian more convenient: # apt Install Courier-pop postfix-mysql postfix-tls courier-authdaemon\courier-authmysql libpam-mysql l ...