(lucene-site) 02/02: Adding Lucene news for release 9.9.0

[ch...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

chegar pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/lucene-site.git

commit d32ad12709f509284aa3ab44f2214e2219e73bb9
Author: ChrisHegarty <ch...@gmail.com>
AuthorDate: Mon Dec 4 14:18:24 2023 +0000

    Adding Lucene news for release 9.9.0
---
 .../core/core_news/2023-12-04-9-9-0-available.md   | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)

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+Title: Apache Lucene™ 9.9.0 available
+category: core/news
+URL:
+save_as:
+
+The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.0.
+
+Apache Lucene is a high-performance, full-featured search engine library
+written entirely in Java. It is a technology suitable for nearly any
+application that requires structured search, full-text search, faceting,
+nearest-neighbor search across high-dimensionality vectors, spell
+correction or query suggestions.
+
+This release contains numerous bug fixes, optimizations, and
+improvements, some of which are highlighted below. The release is
+available for immediate download at:
+
+<https://lucene.apache.org/core/downloads.html>
+
+### Lucene 9.9.0 Release Highlights:
+
+#### New Features
+ * Add int8 scalar quantization to the HNSW vector format. This
+   optionally allows for more compact lossy storage for the vectors,
+   requiring approximately 4x less memory for fast HNSW search.
+ * HNSW graph now can be merged with multiple threads, leveraging the
+   same infrastructure that inter-segment concurrency utilizes.
+
+#### Improvements
+ * Speed up Panama vector support, use FMA, and test improvements. 
+ * FSTCompiler can now approximately limit how much RAM it uses to share 
+   suffixes during FST construction using the suffixRAMLimitMB method. 
+
+#### Optimizations
+ * Faster top-level conjunctions on term queries when sorting by
+   descending score.
+ * Change Postings back to using FOR in Lucene99PostingsFormat. Freqs,
+   positions and offset keep using PFOR.
+
+... plus a multitude of helpful bug fixes!
+
+Please read CHANGES.txt for a full list of new features and changes:
+
+<https://lucene.apache.org/core/9_9_0/changes/Changes.html>