Re:No More Callbacks: 10,000 Actors, 10,000 Threads, 10,000 ...
by hp on Thursday October 17, 2013 @07:49AM
(#6564740)
https://github.com/scala/async is the syntactic sugar to write sequential nonblocking code in Scala (no callbacks).
Though functional-style code works well also if you know it.
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Re:No More Callbacks: 10,000 Actors, 10,000 Threads, 10,000 ...
by pron on Thursday October 17, 2013 @08:05AM
(#6564788)
[cloned comment]
Essentially, Quasar provides async and await for all JVM languages. async is called `Fiber.start()`, and await is called `Fiber.park`. Other than working for all JVM languages, Quasar fibers are more general in that they can spawn many functions (they have a stack), while async is limited to a single expression block. Because of this, we can hide the "await" deep inside the JDBC call stack.
Under the hood, they are similar: both instrument your code. Only async does this at the language level (it's a Scala macro), while fibers do it at the bytecode level.