A computer-readable, non-transitory medium stores a program that manages compressed file groups on a plurality of slave servers. The file groups include compressed files that are to be searched and have character strings. Each of the compressed file groups is expanded, using a Huffman tree that was used...http://www.google.com/patents/US8037035?utm_source=gb-gplus-sharePatent US8037035 - Apparatus for searching and managing compressed files
