Update src/DataCacheBehaviorQueryBuilderModifier.php

since you don't need the cryptographic aspects of sha1, I suggest to use md4 instead which is nearly 2x faster in hashing.

see the benchmarks inside the comments section of...
http://php.net/manual/de/function.hash.php
Merge pull request #3 from staabm/patch-2

Update src/DataCacheBehaviorQueryBuilderModifier.php