# Package org.apache.lucene.util.compress

Compression utilities.

- Class Summary
  Class | Description
  --- | ---
  LowercaseAsciiCompression | Utility class that can efficiently compress arrays that mostly contain characters in the [0x1F,0x3F) or [0x5F,0x7F) ranges, which notably include all digits, lowercase characters, '.', '-' and '_'.
  LZ4 | LZ4 compression and decompression routines.
  LZ4.FastCompressionHashTable | Simple lossy `LZ4.HashTable` that only stores the last ocurrence for each hash on `2^14` bytes of memory.
  LZ4.HighCompressionHashTable | A higher-precision `LZ4.HashTable`.