Concurrent JavaScript: It can work!

  • This post considers a wild thought experiment: what would it take to extend concurrency to the entire JavaScript heap? In this world, any object can be shared with other threads. This would be no small change. Existing JavaScript VM optimizations exploit the fact that there is only one thread of execution, so concurrency is sure to introduce some performance problems. This post is concerned with whether this is even technically feasible, and if it is, what the cost might be.

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