I like to think of forking as the underdog of the concurrency world. In fact, at this point, many programmers have probably never even heard of it. The term âmultithreadedâ has almost become synonymous with âconcurrentâ or âparallel.â The fork() system call creates a âcopyâ of the current process. For our purposes in Ruby, it enables arbitrary code to run asynchronously. Since that code will be sc
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