Transcript Cloud Storage Services: Amazon S3, App Engine Blobstore

Building Cloud Applications
Live Demo: Back-end based on NoSQL DB + REST
Services + HTML5 Client (JavaScript + AJAX)
Svetlin Nakov
Telerik Software Academy
academy.telerik.com
Table of Contents

The Photo Sharer: Idea

3-Tier Architecture in the Cloud

Building the Back-End
 Cloudant NoSQL DB
 DropBox File Storage

Building the Business Tier
 WCF REST Services
 PubNub Messaging

Building the Client
 HTML5 + JavaScript + AJAX
2
The Photo Sharer
Idea Behind the Application
Photo Sharer

We want to build a
photo sharing app

Similar to TweetPic

Display the shared
photos in real time

Share new photos
4
3-Tier Architecture
in the Cloud
Back-End, Middle Tier, Front-End
Typical 3-Tier
Architecture in the Cloud
Client (Front-End)
Computing
Node
Databases
Computing
Node
Storage
Services
…
Back-End
Services
Computing
Node
Other
Services
Administration
Monitoring
Load Balancer
6
Photo Sharer Architecture
Client (Front-End Application)
HTML5 + JavaScript + jQuery + AJAX
REST Services (REST + JSON)
PubNub
Windows Communication
Foundation (WCF) @ AppHarbor
Real-Time
Notifications
Cloudant (NoSQL DB)
DropBox
Managed CouchDB
Holds JSON objects
Cloud File Storage
and File Sharing
7
Building the Back-End
Cloudant NoSQL DB + DropBox File Storage
Live Demo
Building the Business Tier
WCF REST Services + PubNub Messaging
Live Demo
Building the Front-End
Client Application
HTML5 + JavaScript + AJAX
Live Demo
Building Cloud Applications
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Homework
1.
Re-implement the photo sharer at home
 You may use other platforms + technologies, e.g.
 GAE: Java + GAE Datastore + GAE Blobstore +
JAX-RS + HTML5 + JavaScript + AJAX
 PhpFog: PHP + Redis or MongoDB + Google
Drive + HTML5 + JavaScript + REST + JSON
 Use NoSQL database to hold your data
 Use cloud storage to hold the shared images
 Use HTML5 + JavaScript + AJAX + REST for the front-end
2.
Implement "file upload" feature for sharing images
from your local hard disk.
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