Check Disk Capacity Linux

This paper is an excerpt from the book "The Authoritative Guide to Hadoop", published by Tsinghua University Press, which is the author of Tom White, the School of Data Science and engineering, East China Normal University. This book begins with the origins of Hadoop, and integrates theory and practice to introduce Hadoop as an ideal tool for high-performance processing of massive datasets. The book consists of 16 chapters, 3 appendices, covering topics including: Haddoop;mapreduce;hadoop Distributed file system; Hadoop I/O, MapReduce application Open ...

Intermediary transaction SEO diagnose Taobao guest Cloud host technology Lobby database optimization is a very complex task, because it ultimately requires a good understanding of system optimization. 　　Even though the system or application system does not know much about the optimization effect is good, but if you want to optimize the effect of better, then you need to know more about it. 1, the optimization of the system to run faster the most important factor is the basic design of the database. 　　And you have to be aware of what your system is going to do, and the bottlenecks that exist. The most common system bottlenecks are as follows: ...

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; The installation version described in this article is a previous version of 6.10, please note to the reader. At the same time, there are some English wiki readers in the text of the comments and questions and answers, such as item 1.6, and no translation, interested readers can read, or can skip reading.    Thank you! &...

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This article is the MongoDB Production notes section of the translation http://www.aliyun.com/zixun/aggregation/13461.html ">mongodb Manuel. This section focuses on the various considerations that affect performance and reliability in the production environment, and is worth the attention of workers who are deploying MongoDB. This article describes in detail the key system configurations that affect MongoDB, especially the production environment. The following are ...

This paper mainly introduces the ISAS5710 system for Data mart and ODS application, and takes ISAS5710 Medium system as an example, it focuses on how to install and configure the ISAS5710 system, how to design and deploy the database of User data mart and relevant analysis and application, To help you quickly learn the basics of using ISAS5710 Rapid Deployment Data mart applications. With the continuous improvement of user's business system and the increasingly fierce market competition, more and more enterprises are building data Warehouse, Data mart ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host Technology Hall website completes, the maintenance and the management becomes the work which needs to carry on continuously. 　　In this chapter, the site will be optimized for internal links, efficient maintenance, PR upgrade way to introduce. First, optimize the internal links of the site two, the site efficient maintenance of three common sense three, improve the site PageRank have a coup four, site exchange links to beware of counterfeit five, against the vulgar ban on the site's illegal content six, simple configuration let Web server impregnable ...

The idea of using the Internet to provide IT capabilities as a service is relatively new, but recently people have reached a climax in their attention. Infoq has also published several articles, such as "Introduction to Virtualization" and an article on virtualization security, but there is still a lack of comparisons between different cloud providers. This article compares three cloud computing providers, which provide a server-centric solution, starting with a description of how to start three cloud computing services and then comparing the performance, price, and availability of services to three service providers. ...

Server security is crucial to the enterprise. In recent years, servers have been at increased risk of "black hands." Recently, news of servers and viruses has been heard and hacked. First of all, these malicious attacks are designed to consume server resources, affect the normal operation of the server, and even attack the network where the server is paralyzed. On the other hand, they are acts of aggression, which are mostly related to certain interests. Some involve sensitive information of enterprises, and some of them are peers. No matter what, we have to protect the server security, and now, by the famous ...

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