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Google app engine BCA cloud computing subject
- 1. www.oeclib.in Submitted By: Odisha Electronics Control Library Seminar On Google App Engine
- 2. Content Google App Engine •What Is App Engine? •Google App Engine •Why App Engine? •Components •Architectures •Computing Environment •Comparative Study with Other Service •Advantages of Google App Engine •Disadvantages of Google App Engine •What Next? •Conclusion •References
- 3. What IS App Engine? Google App Engine •Google’s Platform to Bulid Web Application on Cloud •Dynamic Web server with full support for common web techonologies •Automatic Scaling & Load balancing •Transctional Datastore model
- 4. Google App Engine Google App Engine Google App Engine (often referred to as GAE or simply App Engine) is a platform as a service (PaaS) cloud computing platform for developing and hosting web applications in Google-managed data centers. Applications are sandboxed and run across multiple servers. App Engine offers automatic scaling for web applications—as the number of requests increases for an application, App Engine automatically allocates more resources for the web application to handle the additional demand. Google App Engine is free up to a certain level of consumed resources. Fees are charged for additional storage, bandwidth, or instance hours required by the application. It was first released as a preview version in April 2008, and came out of preview in September 2011.
- 5. Why App Engine? Google App Engine •Lower total cost of ownership •Rich set of APIs •Fully featured SDK for Local development •Ease of Deployment
- 6. Components SDK Google App Engine Languag e Runtime Web Based Admin Console Scalable Infrastructu re
- 9. Architecture of Google App Engine Google App Engine
- 10. Google Data Store Architecture Google App Engine
- 13. Google App Engine Amazon Web Services Cloud Services PaaS PaaS, IaaS Platforms Supported Linux,Windows Server 2008 Linux,Open Solaris, Windows Server 2003 Virtualization Platform Application Container OS level running on a Xen Hypervisor Storage bigTable and megaStore Amazon Simple Storage and SimpleDB Control Interface API API Command Line Languages Supported Java Python Java,PHP,PythonRuby Load balancing Auto Round Robin Data after termination Google will not take any action for 90 days after the effective date of termination Amazon will not take any action for a period of 30 days after the effective date of termination Google App Engine
- 14. Advantages of Google App Engine Google App Engine ⚫Infrastructure for Security ⚫Scalability ⚫Performance and Reliability ⚫Cost Savings ⚫Platform Independence
- 15. Disadvantages of Google App Engine Google App Engine ⚫You Are At Google’s Mercy ⚫Violation of Policies ⚫Forget Porting ⚫It isn’t Free
- 16. What’s Next? •More Languages on App Engine •Scheduted jobs •Large download/upload support •Purchasing additional capacity Google App Engine
- 17. Conclusion •Flexibility: Java or Python APIs, no 'lock-in‘ •Security: sandbox environment, rich APIs •Easy to Start: generous free quota •Easy to Scale: uses Google infrastructure •FUTURE: better performance, new features Google App Engine