Modern web applications actively use real-time features. Unfortunately, nowadays Ruby is rarely considered as a technology to implement yet another chat – Ruby performance leaves much to be desired when dealing with concurrency and high-loads.

Does this mean that we should betray our favorite language, which brings us happiness, in favor of others?

My answer is NO, and I want to show you, how we can combine the elegance of Ruby with the power of other languages to improve the performance of real-time applications.