Download Beginning Java Google App Engine by Kyle Roche, Jeff Douglas PDF

By Kyle Roche, Jeff Douglas

I used to be very pissed off with my buy and that i was once considering to write down a evaluate out of frustration. even if, after i have noticeable the 5-star reports from different clients, i could not think my eyes. One evaluation was once raving in regards to the code samples (absolutely ridiculous) after which I observed another reader leaving a remark for the evaluate asserting that he is been engaged on the pattern code for weeks and nonetheless could not make it paintings and that i can relate to that.

I pre-order this booklet from Amazon and whilst I begin interpreting it, it used to be a complete unhappiness. i have been engaged on GAE/J for your time now and that i obtained this publication particularly to profit extra approximately Google bills. the instance initiatives aren't entire and it calls for you to fill within the blanks to lead them to paintings. i have additionally checked out the opposite chapters and so they lack in content material. The publication attempts to provide you total, breadth-first view of the know-how (as you are going to count on from a newbie point book), yet whereas doing so it mentions approximately bunch of GAE subject matters, yet fails on giving reliable assurance for that subject. specially in bankruptcy four, whilst the author(s) speak about frameworks, they do not point out approximately gotchas on how you can make those frameworks paintings on the first position, simply because if you are utilizing Spring, BlazeDS and GraniteDS (or the other frameworks, you must do definite tweaks to make those frameworks/technologies/APIs paintings with GAE, simply because the various Java APIs are "black-listed" by means of the App Engine for the most obvious reasons.

If you are a newbie, this isn't a e-book for you. in case you are complicated, in spite of this this ebook does not provide you with adequate in-depth info of the GAE/J subject matters. In end, it is unhappy to claim, yet this publication is dead! it can save you funds simply by going to Google's App Engine site and locate extra up to date and whole details, simply because they preserve changing/upgrading the SDKs for GWT and the App Engine nearly each month.

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You can see how quickly and easily you can leverage the power of Google Web Toolkit to build a pretty impressive application. Local Development Server The App Engine SDK comes with a local development server for App Engine testing and debugging. This is required because the Java Runtime on App Engine is slightly different from the standard distribution. For example, you can’t open ports or sockets in App Engine. To make a remote HTTP request you need to implement App Engine’s URL Fetch service (covered in Chapter 8).

Remember, App Engine is designed to address your concerns about scalability and reliability. It is built on the concept of horizontal scaling, which, in essence, means that instead of running your application on more powerful hardware, you would run your application on more instances of less powerful hardware. In Figure 2-1 you can see your App Engine application running as an isolated entity within the structure of the multitenant environment. As we discussed in Chapter 1, App Engine shares resources among multiple applications but isolates the data and security between each tenant as well.

Launching the Demo Application The App Engine Java SDK includes a few demo applications to help you get up and running. These might be a bit hard to locate. If you’re new to Eclipse, it’s important to note that all the SDKs and add-ons you install to your Eclipse environment get bundled in the plug-ins directory where you extracted the Eclipse distribution. sdk. [sdkbundle_VERSION/ directory, where VERSION is the version identifier of the SDK. There should be a demo directory under the subdirectory called “appengine-javasdk-version”.

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