September 2017
Intermediate to advanced
466 pages
9h 33m
English
Content preview from Go Systems Programming
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Concurrency and parallelism
A very common misconception is that concurrency and parallelism refer to the same thing, which is far from true! Parallelism is the simultaneous execution of multiple things, whereas concurrency is a way of structuring your components so that they can be independently executed when possible.
Only when you build things concurrently you can safely execute them in parallel: when and if your operating system and your hardware permit it. The Erlang programming language did this a long time ago, long before CPUs had multiple cores and computers had lots of RAM.
In a valid concurrent design, adding concurrent entities makes the whole system run faster because more things can run in parallel. So, the desired parallelism ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.