Google 웹 툴킷 ( Google Web Toolkit )
오늘날 웹 응용프로그램을 작성하는 일은 지루하고 오류가 많이 발생하는 과정입니다. 개발자는 브라우저 문제를 해결하는 데 개발 시간의 90%를 소비할 수도 있습니다. 또한 대형 자바스크립트 코드 베이스와 AJAX 구성요소를 만들고, 다시 사용하고, 관리하는 일은 어려울 뿐 아니라 문제가 생기기 쉽습니다. Google Web Toolkit(GWT)을 사용하면 개발자가 Java 프로그래밍 언어로, 복잡하지만 성능이 우수한 자바스크립트 프런트엔드 응용프로그램을 빨리 작성하고 관리할 수 있으므로 이런 부담이 줄어듭니다.Developing and deploying an application on Google App Engine
What Is Google App Engine?
Google App Engine lets you run your web applications on Google's infrastructure. App Engine applications are easy to build, easy to maintain, and easy to scale as your traffic and data storage needs grow. With App Engine, there are no servers to maintain: You just upload your application, and it's ready to serve your users.
You can serve your app from your own domain name (such as http://www.example.com/) using Google Apps. Or, you can serve your app using a free name on the appspot.com domain. You can share your application with the world, or limit access to members of your organization.
Google App Engine supports apps written in several programming languages. With App Engine's Java runtime environment, you can build your app using standard Java technologies, including the JVM, Java servlets, and the Java programming language—or any other language using a JVM-based interpreter or compiler, such as JavaScript or Ruby. App Engine also features a dedicated Python runtime environment, which includes a fast Python interpreter and the Python standard library, and a Go runtime environment that runs natively compiled Go code. These runtime environments are built to ensure that your application runs quickly, securely, and without interference from other apps on the system.
With App Engine, you only pay for what you use. There are no set-up costs and no recurring fees. The resources your application uses, such as storage and bandwidth, are measured by the gigabyte, and billed at competitive rates. You control the maximum amounts of resources your app can consume, so it always stays within your budget.
App Engine costs nothing to get started. All applications can use up to 500 MB of storage and enough CPU and bandwidth to support an efficient app serving around 5 million page views a month, absolutely free. When you enable billing for your application, your free limits are raised, and you only pay for resources you use above the free levels.
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