# Lucene 8.1.1 codecs API

Collection of useful codec, postings format and terms dictionary implementations.

See: Description

Packages
Package | Description
--- | ---
org.apache.lucene.codecs.blockterms | Pluggable term index / block terms dictionary implementations.
org.apache.lucene.codecs.blocktreeords | Same postings format as Lucene50, except the terms dictionary also supports ords, i.e.
org.apache.lucene.codecs.bloom | Codec PostingsFormat for fast access to low-frequency terms such as primary key fields.
org.apache.lucene.codecs.memory | Term dictionary, DocValues or Postings formats that are read entirely into memory.
org.apache.lucene.codecs.simpletext | Simpletext Codec: writes human readable postings.

Collection of useful codec, postings format and terms dictionary implementations.

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