# Package org.apache.lucene.codecs.lucene90.compressing

Lucene 9.0 compressing format.

- Class Summary
  Class | Description
  --- | ---
  FieldsIndexWriter | Efficient index format for block-based `Codec`s.
  Lucene90CompressingStoredFieldsFormat | A `StoredFieldsFormat` that compresses documents in chunks in order to improve the compression ratio.
  Lucene90CompressingStoredFieldsReader | `StoredFieldsReader` impl for `Lucene90CompressingStoredFieldsFormat`.
  Lucene90CompressingStoredFieldsWriter | `StoredFieldsWriter` impl for `Lucene90CompressingStoredFieldsFormat`.
  Lucene90CompressingTermVectorsFormat | A `TermVectorsFormat` that compresses chunks of documents together in order to improve the compression ratio.
  Lucene90CompressingTermVectorsReader | `TermVectorsReader` for `Lucene90CompressingTermVectorsFormat`.
  Lucene90CompressingTermVectorsWriter | `TermVectorsWriter` for `Lucene90CompressingTermVectorsFormat`.