In the past few years, the innovative development of the open source world has elevated the productivity of Java™ developers to one level. Free tools, frameworks and solutions make up for once-scarce vacancies. The Apache CouchDB, which some people think is a WEB 2.0 database, is very promising. It's not difficult to master CouchDB, it's as simple as using a Web browser. This issue of Java open ...
Intermediary transaction SEO troubleshooting Taobao guest Cloud host technology Hall based on the forum system Juteforum well-known, BBS is in the Internet as a necessary to do the site, I am afraid that each of the Internet friends have been on the BBS, to other people's Forum irrigation water or communication technology, at the same time perhaps because you have a special The characteristics of the industry, I hope to set up a professional forum for your friends, peers, as well as the national staff to participate in technical exchanges. &n ...
This article series consists of two parts, and in part 1th of this series you will learn how to use the Tiyatien Center API and how to monitor deadlocks in a running Java application. Part 2nd uses the deadlock detection application developed in this article and adds a method to analyze the view to show where the application spends most of its CPU cycles. Have you ever encountered an application server hang without a clear cause or a Java application has become unresponsive? Is your application memory ...
Take the XX data file from the FTP host. Tens not just a concept, represents data that is equal to tens of millions or more than tens of millions of data sharing does not involve distributed collection and storage and so on. Is the processing of data on a machine, if the amount of data is very large, you can consider distributed processing, if I have this experience, will be in time to share. 1, the application of the FTP tool, 2, tens the core of the FTP key parts-the list directory to the file, as long as this piece is done, basically the performance is not too big problem. You can pass a ...
We have released a storage client Java version that supports Windows http://www.aliyun.com/zixun/aggregation/13357.html ">azure blobs, queue, and table." Our goal is to continue to improve the development experience when writing cloud computing applications that use Windows Azure storage. This is the release of Microsoft's supported Community Technology Preview (CTP). Therefore, we combine the customer ...
While the term cloud computing is not new (Amazon started providing its cloud services in 2006), it has been a real buzzword since 2008, when cloud services from Google and Amazon gained public attention. Google's app engine enables users to build and host Web applications on Google's infrastructure. Together with S3,amazonweb services also includes elastic Cloud Compute (EC2) calculation ...
Konakart is a affordable Java based shopping cart software http://www.aliyun.com/zixun/aggregation/34003.html "> Solution for online retailers. Let Konakart help could your ecommerce sale ...
Usually the development of the thread is a thing, such as Tomcat is a servlet in the threads, there is no thread how do we provide multi-user access? But many developers who have just started to touch threads have suffered a lot. How to do a set of simple threading Development Mode framework for everyone from the single thread development into multithreaded development, this is really a relatively difficult project. What is the specific thread? First look at what the process is, the process is a system executed a program, this program can use memory, processor, file system and other related resources ...
Http://www.aliyun.com/zixun/aggregation/14223.html "> Application system, the log is an indispensable important part of all the application of error information should be able to find in the log file, Some application system log may be very small, some large application system log is quite large, while the log file must be user-friendly and search, to have a high performance, otherwise it will affect the performance of the application system. Because the log usually involves I.
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 ...
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