If you plan to create high-speed traffic, a very secure site, which language would you use?
For example, if you were planning to build a site authorize.net, which was supposed to process tons of credit card transactions through the API, what would you use to create it from scratch? I would suggest that most sites handling similar traffic with similar security would use open source software (correct me if I am wrong). What open source software would you use and why? Python, Ruby, Erlang, PHP, custom C / C ++ or what? Also, would you use a traditional database, or is the NoSQL route more useful ?
Not trying to start a fiery war here, it's just interesting what good people from ... think
Update: As an explanation, this is all hypothetically. I fully understand the importance of knowing your language / platform, just looking for some opinions about the strengths / weaknesses of a given language / structure and where (and why) you can be more suitable for another. As for the data, I think the customer bought elements X, Y and Z from supplier B. So, quite simply, until someone wants to know if customer C is buying elements X and Y or X and Z or Y and Z together in one purchase. So, in terms of data, I think I look at it from a business intelligence perspective and wonder if NoSQL has any advantages / disadvantages in a traditional SQL database.
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