What like Twitter? You could win the lottery 10 times before having a chance at starting a company that has scaling problems like Twitter. Besides Rails still exists in there stack.
Don't even mention LinkedIn, they don't even know what they doing. They were using like Mongrel version -2 and Rails -0.3, when they decided they had issues with there mobile platform and moved it to NodeJS.
Don't even mention LinkedIn, they don't even know what they doing. They were using like Mongrel version -2 and Rails -0.3, when they decided they had issues with there mobile platform and moved it to NodeJS.