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Concurrent Ruby
Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.
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Scout Monitoring
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Let’s say we need to traverse through thousands of files in our S3 Storage in a Ruby app. Let’s say we have a bunch of logs there that we need to read every day and process. If we just use a straightforward approach, like opening, reading, and processing every file one by one, our solution will work, but It will take a lot of time to process. So we need to improve the speed. Here ruby-concurrent gem is our helper https://github.com/ruby-concurrency/concurrent-ruby. Why do we need this gem? Because It’s simpler to use than Threads and this gem has a lot more features in It. In this article, we will use Concurrent::Promises.future as the most common use of concurrent code. Because reading a file from S3 is an IO operation, we can get a huge benefit in speed if we gonna use concurrent code doing HTTP requests. Remember that concurrency will not give you speed improvements if in every Promise or Thread you will do any calculations. Because of Ruby GIL, every thread will be blocked until calculations are finished.