1.12.0

Change log

Features :tropical_drink:

• #milestone-4 - Facets API - adds ability to retrieve unique payload values with counts for a given index field under the given filter. [Docs]
• #milestone-11 - Distance Matrix API - adds ability to calculate many-to-many distances between stored vectors. This feature is useful for clustering, dimensionality reduction, visualization, and other data exploration tasks. [Docs]

Improvements :roller_coaster:

• https://github.com/qdrant/qdrant/pull/5188 - Use mmap vector storage by default. This change have several important implications:
  • We avoid using expensive rocksdb to make upload significantly faster, especially for large datasets.
  • Vectors are stored in memory-mapped files, which means that the OS will manage the memory for us. Qdrant process will consume less RSS Anon memory, but will use disk cache instead. That means that in case of high memory usage qdrant will slow down instead of crashing with OOM.
• #milestone-14 - Enable sparse snapshots, which means that allocated but empty files in the vector storage no longer occupy extra disk space in the snapshot. See Sparse files. This change rely on the upstream changes in tar-rs crate - https://github.com/alexcrichton/tar-rs/pull/375
• #milestone-12 - Ability to offload text-index on disk
• https://github.com/qdrant/qdrant/pull/4841 - Ability to offload geo-index on disk
• https://github.com/qdrant/qdrant/pull/5140 - Trigger optimizers when uploading snapshots.
• https://github.com/qdrant/qdrant/pull/5173 - Instantly self-elect Raft leader, when cluster contains single peer

Bug fixes :performing_arts:

• https://github.com/qdrant/qdrant/pull/5176 - Make shards removal atomic, prevents partial shard recovery on restart.

Web-UI Dashboard :bento:

• Improved graph visualization, which allows to sample large chunk of data from the collection
• Improvements in visualization panned UX
• More interactive tutorials and examples
• Full list - https://github.com/qdrant/qdrant-web-ui/releases/tag/v0.1.32