v1.1.0

Added

• Add links to the version headings in the CHANGELOG.

Changed

• Update hnswlib code to release v0.5.2.
• Use Go version 1.17.
• Upgrade dependencies.
• Regenerate pb/grpc files with protoc-gen-go v1.27.1 and protoc v3.17.3.

v1.0.0

Added

• Significantly increased data durability with the introduction of
  Write-Ahead Logging (WAL).

  A record of all operations performed on an index is appended to a Write-Ahead
  Log (WAL) file (see pkg/wal package). The log is emptied only after each
  successful saving operation, that is, once the in-memory content of the index
  is "securely" persisted on disk.
  If a log file is present, any recorded operation is re-applied while loading
  an existing index.

Changed

• Breaking: HNSW internal state structure changed in a back-incompatible way.

  The internal state (i.e. type hnswState), which is persisted to disk when
  saving an index, now contains all the index configuration parameters.
  This might be convenient for indices inspection and recovery.

• Refactor and improve test cases.

Removed

• File hnsw_wrapper.o, which is part of the building process.

Fixed

• Fix bug causing re-loaded indices to break when inserting new vectors.

v0.2.0

Added

• Tests.
• GitHub Workflow CI.
• This CHANGELOG file.

Changed

• Improved indices saving and loading implementation.
• Improved logging.
• Significant code refactoring.

v0.1.1

Added

• Methods InsertVectorWithId and InsertVectorsWithIds.

v0.1.0

Added

• First release.