The document discusses PHP and platform independence in the cloud. It describes different definitions of the cloud and benefits like scalability. It notes that applications should be written for the cloud using cloud services. Moving applications between cloud providers is difficult due to API differences. The PHPilosophy is presented as using abstraction to create common interfaces for cloud services like storage, documents, and queues to provide platform independence when using different cloud providers.

1. PHP and Platform Independence in the Cloud ByWil Sinclair – Cloud Zealot

2. What is the Cloud? And why can’t we all move on to the next big thing already?

3. One Definition

4. Another Definition From http://www.burtongroup.com

5. Yet Another Definition

6. My Definition Cloud:Tools::Internet:Content

7. The Cloud is all around us. On your iPhone. Under your Facebook apps. All up in your twitter account.

8. The Cloud is the future. But, then again, you could say that about almost anything if you make its definition broad enough.

9. Select Benefits Elasticity Scalability High Availability Resilience Location Independence Development Best Practices Security

10. CAPex OPex Big Win for Startups

11. But it sounds too good to be true.

12. Making the most of it.

13. Secret Sauce Don’t just deploy your applications on the cloud, write them for the cloud.

14. Secret Sauce, cntd. Use best-fit cloud application services.

15. Cloud Application Services Unstructured Storage S3 Azure Blob Storage Rackspace Cloud Files

16. Cloud Application Services Document Storage SimpleDB Azure Table Storage Quickbase Google Datastore

17. Cloud Application Services Simple Queues SQS Azure Queue Storage OnlineMQ

18. Future Cloud Application Services Authentication and Authorization Session Management Messaging Scheduler Search Spam/Virus Detection Analytics And on. . . And on. . .

19. Applications written for the cloud are. . . More Performant More Scalable Better Designed More Secure Less Expensive

20. . . .assuming you chose the right cloud provider.

21. Now You’re Screwed Every API is different! I’m locked in! My cloud provider is bending me over! The sky is falling!

22. Or are you? After all, there’s lots of commonality across cloud application services.

23. Yes, you are. All that commonality is hidden behind uninteresting differences.

24. Porting an AWS Application to Azure Change your signature algorithm ‘buckets’ are now ‘containers’ ‘objects’ are now ‘blobs’ SQS RESTish query API needs to be changed to the RESTful Azure Queue Storage API SimpleDB to Azure Table Storage? Good luck with that.

25. Moving Your Applications is Hard And not for interesting reasons. :-/

26. Let's Open Up a Can of Standards on these APIs!

27. Let's Open Up a Can of Standards on these APIs!

28. Ummm. . .

29. Let’s not.

30. Open Source to the Rescue Is there anything it can’t do?

32. Survival of the smartest

33. Encourages innovation

34. Slow

35. Can be abortive

37. The PHPilosophy Build on What's Already There

38. The PHPilosophy Wave the magic wand of abstraction. . .

39. The PHPilosophy Until You Have Something That's Useful

40. The PHPilosophy Don’t Forget to Share http://framework.zend.com

41. The PHPilosophy Repeat until you have something that's taken on a life of its own.

42. You knew it was coming. . .

44. Respect Due

45. Storage Service interface Zend_Cloud_StorageService { public function fetchItem($path, $options = null); public function storeItem($data, $destinationPath, $options = null); public function deleteItem($path, $options = null); public function copyItem($sourcePath, $destinationPath, $options = null); public function moveItem($sourcePath, $destinationPath, $options = null); public function fetchMetadata($path, $options = null); public function storeMetadata($metadata, $destinationPath, $options = null); public function deleteMetadata($path); }

46. Document Service interface Zend_Cloud_DocumentService { public function createCollection($name, $options = null); public function deleteCollection($name, $options = null); public function listCollections($options = null); public function listDocuments($options = null); public function insertDocument($document, $options = null); public function updateDocument($document, $options = null); public function deleteDocument($document, $options = null); public function query($query, $options = null); }

47. Queue Service interface Zend_Cloud_QueueService { public function createQueue($name, $options = null); public function deleteQueue($name, $options = null); public functionlistQueues($options = null); public function fetchQueueMetadata($name, $options = null); public function storeQueueMetadata($metadata, $name, $options = null); public function sendMessage($message, $queueName, $options = null); public function recieveMessages($queueName, $max = 1, $options = null); public function deleteMessage($id, $queueName, $options = null); public function peekMessage($id, $queueName, $options = null); }

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