[woan]

It's amazing how many of these so called CS topics that fell out of favor in the 90s have come back in the web world in major ways.

Consistency, concurrency, parallelism, persistence. Yup we're back to basic distributed systems over larger networks.

The vast majority of developers don't need to know all of those things of course, i.e. forms enterprise or some level of RoR applications, but it is kind of interesting to see the resurgence in systems level skills needed in the industry. At one point OS and high transaction developers were down to a negligible percentage of practicing developers and we thought everyone would move to certification type education and high level abstractions.