github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/blog/content/concurrency-is-not-parallelism.article (about) 1 Concurrency is not parallelism 2 16 Jan 2013 3 Tags: concurrency, talk, video 4 5 Andrew Gerrand 6 7 * Introduction 8 9 If there's one thing most people know about Go, is that it is designed for concurrency. No introduction to Go is complete without a demonstration of its goroutines and channels. 10 11 But when people hear the word _concurrency_ they often think of _parallelism_, a related but quite distinct concept. In programming, concurrency is the _composition_ of independently executing processes, while parallelism is the simultaneous _execution_ of (possibly related) computations. Concurrency is about _dealing_with_ lots of things at once. Parallelism is about _doing_ lots of things at once. 12 13 To clear up this conflation, Rob Pike gave a talk at [[http://heroku.com/][Heroku]]'s [[http://waza.heroku.com/][Waza]] conference entitled _Concurrency_is_not_parallelism_, and a video recording of the talk was released a few months ago. 14 15 .iframe http://player.vimeo.com/video/49718712?badge=0 281 500 16 17 The slides are available at [[http://talks.golang.org/2012/waza.slide][talks.golang.org]] (use the left and right arrow keys to navigate). 18 19 To learn about Go's concurrency primitives, watch [[http://www.youtube.com/watch?v=f6kdp27TYZs][Go concurrency patterns]] ([[http://talks.golang.org/2012/concurrency.slide][slides]]).