RESTfull Web API Applications
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RESTfull Web API Applications

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    RESTfull Web API Applications RESTfull Web API Applications Presentation Transcript

    • RESTful Web API Applications AppliGate Consultancy
    • Agenda● Need for Scaling Applications● Cloud Environment● RESTful Web Services
    • Need to scale and more...● At AppliGate we had the need for easy to build, to scale, and to maintain applications for the web ○ And... no adminstration burden● In the past: ○ Lotus Domino, then ○ Servlets + JSPs on Google App Engine● Nowadays: ○ RESTful Web API applications ○ Restlet framework + Java Data Objects (JDO) datastore on Google App Engine ○ JSON centric, Lotus Domino like but more
    • The CloudGoogle App Engine (GAE) is a platform as aservice (PaaS) cloud computing platform fordeveloping and hosting web applications inGoogle-managed data centers.● Scales as trafic and data storage grows● Up to 10 applications free ○ Quotas are resetted daily● Fees for additional storage, bandwidth, or instance hours ○ 99,95% SLA
    • GAE Java Runtime Environment● Java servlet standard● Sandboxed● Storing data ○ Java Data Objects and Java Persistence API● Blobstore● Memcache● CRON jobs● Googles Accounts authentication● Java Mail API● Full text search (experimental)
    • RESTful Web Services● Desertion Roy Fielding ○ Representational State Transfer (REST) ■ architectural principle of the world wide web ○ Easier to use than SOAP● RESTful Web applications ○ Use HTTP methods to create, update, read, and delete resources ○ Called RESTful Web Services or RESTful Web API● Stateless, and so very scalable
    • Example RESTful Web Service● event-scheduler.appspot.com ○ Application for recording event descriptions and scheduled events● Open Web API● REST principles using Restlet Framework ○ GET, POST, PUT, DELETE HTTP methods● JSON based representations● Multiple accounts● HTTPS● Documentation ○ http://event-scheduler.appspot.com/documentation.html
    • Another Example● AppliGates web site is based on the Restlet framework ○ Supports all web features with REST ○ Java based ○ HTML and JSON (internal) representations ○ Multilingual: Dutch and English ○ Supports iPhone, Anroid and Blackberry ○ Runs on Google App Engine● Uses event-scheduler.appspot.com for the actual course schedule● JSON centric approach
    • JSON Centric Approach● Like Domino, but deeper nested structures● Create and update with a REST client● Field labels can be included (multilingual)
    • Need help?● AppliGate assists to build RESTful Web API applications running on Google App Engine● JSON centric● Proof of concept● Workshop● rbontekoe@appligate.nl● http://www.appligate.nl