A Rust implementation of Consistent hashing algorithm.
Currently this crate only provides statically built, virtual node based hash rings.
```sh $ cat /proc/cpuinfo | grep 'model name' | head -1 model name : Intel(R) Core(TM) i7-6600U CPU @ 2.60GHz
$ uname -a Linux ubuntu 4.8.0-34-generic #36-Ubuntu SMP Wed Dec 21 17:24:18 UTC 2016 x8664 x8664 x86_64 GNU/Linux
$ cargo run --release --example bench -- /usr/share/dict/words --vnode_count 1000 --nodes Rust Alef C++ Camlp4 CommonLisp Erlang Haskell Hermes Limbo Napier Napier88 Newsqueak NIL Sather StandardML
WORD COUNT: 99156 REAL NODE COUNT: 15 VIRTUAL NODE COUNT: 15000 (1000 per node)
SELECTED COUNT PER NODE: - Rust: 6265 - NIL: 6642 - Sather: 7165 - Erlang: 6545 - Camlp4: 6912 - Napier88: 6287 - CommonLisp: 6901 - C++: 6504 - StandardML: 6937 - Hermes: 6166 - Newsqueak: 6725 - Alef: 6586 - Haskell: 6240 - Limbo: 6754 - Napier: 6527
ELAPSED: 18 ms WORDS PER SECOND: 5342456 ```