Разработка параллельных распределенных систем трудна

Статьи на английском, но дико наглядные


http://aphyr.com/posts/281-call-me-maybe-carly-rae-jepsen-and-the-perils-of-network-partitions
http://aphyr.com/posts/282-call-me-maybe-postgres
http://aphyr.com/posts/283-call-me-maybe-redis
http://aphyr.com/posts/284-call-me-maybe-mongodb
http://aphyr.com/posts/285-call-me-maybe-riak
http://aphyr.com/posts/286-call-me-maybe-final-thoughts