In the past Client-server, RPC framework hierarchies such as CORBA and RMI did not seek because such technologies could extend a stand-alone IPC (inter-process communication, interprocess communication) to communication between multiple computers, This is very helpful for extensibility, but for a variety of reasons these RPC frameworks have not been adopted by the industry on a large scale. In the era of cloud computing, more and more machines are needed for distributed communications, although they can be easily communicated by using the HTTP protocol.
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 ...
This article also demonstrates how to use the above three methods in your project and the scenarios that are appropriate for each method. Web Services is a http://www.aliyun.com/zixun/aggregation/14107.html "> Service-Oriented architecture that provides services through standard WEB protocols to ensure that application services on different platforms can interoperate. Web Services (Web service) is a service based on XML and HTTP communication ...
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 ...
1. This document describes some of the most important and commonly used Hadoop on Demand (HOD) configuration items. These configuration items can be specified in two ways: the INI-style configuration file, the command-line options for the Hod shell specified by the--section.option[=value] format. If the same option is specified in two places, the values in the command line override the values in the configuration file. You can get a brief description of all the configuration items by using the following command: $ hod--verbose-he ...
Building a secure API design in a cloud computing environment is a challenging task. In this article, security research expert Dejan Lukan describes a number of things businesses need to remember when developing security APIs. An application Programming interface (API) is a simple extension of a normally running application to help users interact with it programmatically. The APIs are used for a variety of reasons, including extracting data from a database, sending and saving data to a database, and pushing tasks into queues, but ...
Xins is an open-source http://www.aliyun.com/zixun/aggregation/13729.html ">web Service framework that supports HTTP protocols such as rest, SOAP, XML-RPC, JSON, and Json-rpc. Xins is a technical specification for defining, creating, and invoking remote APIs. Xins is a specification-oriented API specification that is written in XML and translates to html-based documents and to clients/...
SOA and SaaS must be separated. The combination of SOA and SaaS can be a trend. SOA is not yet SaaS in China. When it comes to SOA, the ESB cannot be said. An ESB is a new software object that is added to the framework of the SOA architecture. There is a need to provide SOA services over the Internet. Dana Gardner, the boss of Cape Clear, an American ESB provider, spoke to the media about the possibility of providing SOA, an ESB as an integrated service. Soon after, his public ...
Nifty has been operating the site for a long time, and after the launch of the WYSIWYG web platform based on HTML5, users have built more than 54 million sites in the company, and most of them have less than 100 solar PV. Since the PV of each page is low, the traditional caching strategy does not apply. Even so, however, the company has done so with only 4 Web servers. Recently, Wix chief back-end engineer Aviran Mordo in "Wix architecture ...
Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall when Baidu launched Pomegranate algorithm, the original things have been on the internet has been hyped, But when a lot of owners in their brains to think of the original content, but found their own hard work for others to do the wedding clothes, Baidu in the original judgment still exist a certain defect, when a small website published original content, in very ...
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