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PaaS (Platform-as-a-service) is a kind of cloud service, the service provider not only provides on-demand hardware and operating system services, but also provides the application platform and solution stack. For developers, PAAs greatly reduces the cost and pain of it deployments, providing resources for applications to scale more easily as needed. JVMs, application servers, and deployment packages (for example, war and ear) provide natural isolation for Java applications, allowing different developers to deploy applications in the same infrastructure, so JAV ...

Oracle Global Congress, October 2, 2012--At the JavaOne conference, Oracle showed the Java Platform Enterprise Edition (Java Platform, Enterprise http://www.aliyun.com/zixun/ The latest developments in aggregation/29806.html ">edition,java ee" are discussed in the upcoming Java EE 7 release. ...

Last year in the investigation of a lot of java applications, see some of the phenomenon is the programmer to run on their own environment to read the program rarely lead to troubleshooting problems will be more frustrating, so think of writing this series of articles, procedures To provide functionality to end-users, the code is only one part of it, and it needs to be relied on for jvm, os, server hardware, networking, load balancing, etc. In this series of articles, Several parts, more is only a science role, because os I use are linux, this series ...

As we all know, Java in the processing of data is relatively large, loading into memory will inevitably lead to memory overflow, while in some http://www.aliyun.com/zixun/aggregation/14345.html "> 　　Data processing we have to deal with massive data, in doing data processing, our common means is decomposition, compression, parallel, temporary files and other methods; For example, we want to export data from a database, no matter what the database, to a file, usually Excel or ...

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 ...

This article takes a practical project as an example, describes how to use Java multithreaded programming to simulate the random or regular behavior of multiple users. Using Java multithreaded programming, can better test products, earlier exposure to potential problems. With the increasing complexity and scale of http://www.aliyun.com/zixun/aggregation/32730.html > Information System, the application of transaction middleware in complex systems is more and more extensive. Transaction middleware as a medium ...

This article combines GWT Designer with a small web http://www.aliyun.com/zixun/aggregation/14223.html "> Application System" for a complete introduction to GWT based Web application development. Including development environment, data communication and application deployment. Ajax and Ajax-based WEB application Development Brief Introduction Ajax is "Asynchronous Jav ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall Note: This guidance applies to the following types of servers: Apache Tomcat Java Web Servers When requesting a server certificate, the user needs to provide a certificate signing request file (CSR). The CSR file is a from ...

Multithreading is the problem that programmers often face in the interview, the level of mastery and understanding of multithreading concept is often used to measure a person's programming strength. Yes, ordinary multithreading is not easy, then when multithreading encounter "elephants" will produce what kind of sparks? 　　Here we share the Java thread Pool management and distributed Hadoop scheduling framework with 严澜, the Shanghai Creative Technology director. Usually the development of the thread is a thing, such as Tomcat in the servlet is the threads, no thread how we provide more ...

The Apache Jackrabbit is an implementation of a content Storage specification (JCR) that complies fully with the Java API version. is an open source implementation of JSR-170 provided by http://www.aliyun.com/zixun/aggregation/14417.html ">apache Foundation". Update Description: BUG fixes [JCR-2888] Namespace Co ...