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 ...
&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; New graphical elements and JavaScript in HTML5 have sparked a revival of interactive data display technologies. Today's browser user interface is not only rich, pleasing, but also as a data visualization carrier, used to display columnar, bubble map and colorful maps. Interactive data can be ...
The intermediary transaction SEO diagnoses Taobao guest cloud host technology Hall still has one hours to 2012, that can also have a bit of time to write a bit of spit things, hehe ... December 2011 is definitely my work since the maximum pressure of one months, has been busy to sleep less time, part-time reading less time, the body began to alarm, shoulder responsibility pressure I really breathless ... As an ordinary north drift, in Beijing similar to me such a sea of humanity, especially in our industry. I love life very much, every minute is precious;
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 ...
The intermediary transaction SEO diagnoses Taobao guest cloud host technology Hall from the plan, to the front and rear end of the development, finally to the test and on-line, lasted 4 months, 5,173 first page front-end performance optimization project finally smoothly on-line, and achieved the expected performance optimization goal. This project is not a revision, but the original home page design and function unchanged, only to do refactoring and optimization. Although the project is called the front-end performance optimization, but it is not only the front-end unilateral work, to complete the optimization well, it requires the full complement of the front and back. Historical background ...
Part 1th of this series describes how to get started with coffeescript, and explains some of the additional features that are available for developers. The 2nd part describes how to use Coffeescript to solve some programming problems. This article describes how to use Coffeescript to create a complete application. Coffeescript is a new programming language built on JavaScript. Coffeescript offers the ability to attract Python ...
Backbone is a http://www.aliyun.com/zixun/aggregation/33906.html ">javascript framework that can be used to create model-view-controller ( Model-view-controller, MVC) class application and a Single-page interface. In this article, we'll see how backbone can be used to create Ajax applications or a single-page interface. Web applications are getting more and more off ...
Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall Openbiz Architecture openbiz Framework is designed to enable the design, development and maintenance of networks should Use the procedure to change quickly and conveniently. The main innovation of openbiz architecture is its metadata based design. This means that the Openbiz object is created based on the description in the metadata file ...
by ASP.net MVC's built-in extensibility, developers can use third party libraries, such as jquery. When using ASP.net webforms, it is more difficult to use jquery instead of asp.net AJAX. At the beginning of this article, the version of ASP.net mvc was preview 4, and some of the techniques used in preview 4 might not work in earlier versions. Preview 4 can be downloaded from the CodePlex. ...
"Editor's note" with support for the widely used JSON data interchange format, the emergence of a new version of the PostgreSQL open source database marks its goal of pointing to the growing NoSQL market for relational data storage, especially the mongodb of popularity. Now, Enterprisedb has launched a free turnkey development environment that will make it easy for programmers to build Web applications with PostgreSQL's new NoSQL features. The following is the original: Enterprise-class number of PostgreSQL ...
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