Yesterday at the Virtual Machine Meetup, I was giving a talk about why I think concurrent programming is hard, and what we can do about it.
Jul 15, 2014: Why is Concurrent Programming hard?
In short, I think, it is hard because on the one hand there is not a single concurrency abstraction that fits all problems, and on the other hand the various different abstractions are rarely designed to be used in combination with each other.
Feb 17, 2014: Towards Composable Concurrency Abstractions
One of the big questions that came up during my PhD was: ok, now you got your fancy ownership-based metaobject protocol, and you can implement actors, agents, communicating sequential processes, software transactional memory, and many others, but now what? How are you going to use all of these in concert in one application? Finding a satisfying answer is unfortunately far from trivial.