Cloud Discussion
Hadoop is a big data management and massive storage solution Any social networking requires tow things a) a powerfull search engine and Masshive storage popular seach engines are Lucine is appache product, and solar(solar has licence, solar enterprice and solar community eddition), Elastic(is open source there is no commercial eddition) There are many usecaces wher ppl are using Hadoop as a storage and elastic search as a processing engine Default storage in Azure is called Table sotrage and in amazon we have Dynmo DB for no sql. Apart from that there different cloud for no sql like Mango cloud, we hace casendra, Amazon has native support for elastic, you can create vm of elastic, MySQL is free right, yes, there is IBM product called websphere commerce server, it is ecom product, at the backend they uses solar, Its commercial virsion they have customized solar and developed WebSphere. Even you are goaing for opensource ...you have to pay for support anywhere. Salesforce(CR