# Package org.apache.lucene.util.compress

package org.apache.lucene.util.compress
Compression utilities.

- Related Packages
  Package
  Description
  org.apache.lucene.util
  Some utility classes.
- Classes
  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`.