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Earlier Versions

Changelogs for versions before 5.0 are kept here. For even earlier releases, check the GitHub releases.

4.3.0 (2025-05-12)​

  • Windows: msvc runtime is now embedded to avoid incompatible msvcp140.dll (e.g. those shipped with some JDKs)
  • External property types (via MongoDB connector): JsonToNative to support sub (embedded/nested) documents/arrays in MongoDB
  • External property types (via MongoDB connector): support ID mapping to UUIDs (v4 and v7)
  • Admin: add class and dependency diagrams to the schema page (view and download)
  • Admin: improved data view for large vectors by displaying only the first elements and the full vector in a dialog
  • Admin: detects images stored as bytes and shows them as such (PNG, GIF, JPEG, SVG, WEBP)

Sync​

  • Add "Log Events" for important server events, which can be viewed on new Admin page
  • Detect and ignore changes for objects that were put but were unchanged
  • The limit for message size was raised to 32 MB
  • Transactions above the message size limit will already fail on the client now (to better enforce the limit)
  • C++: add missing APIs for JWT token credentials

4.2.0 (2025-03-04)​

  • Extended the model by external names and types: allows defining a different name for an external database, which ObjectBox syncs with.

This prepares upcoming features for our MongoDB Sync Connector.

4.1.0 (2025-01-28)​

  • New query conditions for map properties (via flex properties): now supports key/value pairs for inequality conditions (e.g. greater than, less than) for string, integer and floating point values
  • Vector search: add "Geo" distance type for longitude/latitude pairs
  • Various internal improvements

Sync​

  • Add JWT authentication
  • Sync clients can now send multiple credentials for login

4.0 (2024-11-11)​

Note: 4.0.3 the first 4.0.x version working with ObjectBox Generator 4.0 and thus is the first full 4.0 release. For individual changes in the runtime library check the GitHub release notes: 4.0.0, 4.0.1 and 4.0.2.

  • CMake stubs to easily integrate with ObjectBox Generator 4.0
  • ObjectBox now supports vector search ("vector database") to enable efficient similarity searches.
    This is particularly useful for AI/ML/RAG applications, e.g. image, audio, or text similarity.
    Other use cases include semantic search or recommendation engines.
    See https://docs.objectbox.io/ann-vector-search for details.
  • Adjusting the version number to match the core version (4.0); we will be aligning on major versions from now on.
  • Made closing the store more robust; e.g. it waits for ongoing queries and transactions to finish
    (please still ensure to clean up properly on your side, this is an additional safety net)
  • Made Box API more robust when racing against store closing
  • Add "vectorsearch-cities" example

0.21.0 (2024-02-13)​

  • In-memory databases (simply provide a "memory:" prefixed "directory")

Sync:​

  • New client/server statistics API
  • New server API to enable authenticators
  • Sync server: support for sync permissions, blocks client updates with no write permission
  • Added sync-level login/write permissions for Admin Users DB and Web-UI
  • New authenticator "ObjectBox Admin" with support for authorization
  • New client API for username/password credentials
  • New client-side error listener API; initially reports "receive-only" downgrade due to no write permissions.

0.20.0 (2023-12-11)​

  • Added OBXFeature_Backup to query for the feature's availability
  • Internal: added a DB store abstraction layer (another announcement about this will follow)
  • Tree API: fix for meta IDs vs. IDs
  • Various internal improvements

Sync​

  • Sync clients may now supply multiple URLs; for each connection attempt a random one is chosen. This allows for client-side load balancing and failover with an ObjectBox Sync cluster.

0.19.0 (2023-09-04)​

  • New K/V validation option on opening the store
  • Additions cursor API: get current ID, ID-based seeks (seek to first ID, seek to next ID)
  • Support scalar vector types with basic queries (APIs only, no generator support)
  • Various tree API improvements, e.g. introspection
  • Minor API clean up: e.g. using int types for bit flags not enums
  • Fixes query link condition in combination with some "or" conditions
  • Fixes query "less" condition for case-sensitive strings with value indexes (default is hashed index)
  • Updated Linux toolchain; now requires glibc 2.28 or higher (and GLIBCXX_3.4.25); e.g. the following minium versions are fine: Debian Buster 10 (2019), Ubuntu 20.04, RHEL 8 (2019)
  • Various internal improvements
  • Sync: various additions and improvements (client and server)

0.18.1 (2023-01-30)​

Recommended bugfix release; please update.

  • Fixes "Could not put (-30786)", which may occur in some corner cases on some platforms.

0.18.0 (2022-10-31)​

  • Date properties can now be tagged as expiration time; which can be then be easily evicted
  • Tree API: various additions and improvements, e.g. OBXTreeOptionFlags to configure the tree behavior
  • New query condition to match objects that have a given number of relations
  • New "max data size" store setting
  • Enabled stricter compiler settings
  • Added stacktraces on errors (Linux only; very lightweight as it uses external addr2line or llvm-symbolizer)
  • Added log callback for most important logs
  • Consolidated "user data" passing as the last parameter
  • Various internal improvements

C++​

  • Added BoxTypeless, QueryBuilderBase and QueryBase: these can be used without generated code and template types.
  • New APIs to get the schema IDs for entity types and properties
  • Added two methods to Store to await asynchronous processing
  • Added "internal" namespace so that internal members do not spill into the obx namespace
  • Move more implementations to OBX_CPP_FILE

Sync​

  • Custom protocols for Sync: plugin your own messaging protocol, which ObjectBox Sync will run on
  • Improvements to run Sync Server with limited disk space (e.g. on small devices)
  • Tree Sync improvements; e.g. consolidate conflicts
  • WebSockets (sync protocol) is now a feature, which can be turned off (special build version)
  • Performance optimizations

0.17.0 (2022-06-15)​

  • Added a "weak store" API providing weak reference for stores (typically used by background threads)
  • Added Store ID API, e.g. getting a store by its ID
  • Various internal improvements including minor optimizations for binary size and performance

C++​

  • New "OBX_CPP_FILE" define to place declarations in a single .cpp/.cc file: improves compilation time and results
  • New "Exception" base class for all thrown exceptions
  • Various internal improvements, e.g. a "internal" namespace to better distinguish from userland API

0.16.0 (2022-05-06)​

  • Allow UTF-8 for database directories on Windows (available for other platforms before)
  • Various internal improvements

C++​

  • Promoted Options to a top level class, as nested classes cannot be declared forward
  • New #define to disable FlatBuffers includes to simplify new project setup
  • Rename Exception to DbException
  • Minor improvements

V0.15.2 (2022-02-15)​

  • Add store cloning
  • Fix attaching to a reopened store

V0.15.1 (2022-01-26)​

  • Fix non-unique indexes triggering unique constraint violations in corner cases (requires at least two unique constraints in an entity and a specific order; introduced in 0.15.0)
  • Admin UI now supports multiple sessions to the same host using different ports (session ID via HTTP request)
  • Minor performance improvements with hashed indexes

Sync​

  • Performance improvements for compression and decompression

V0.15.0 (2021-12-09)​

  • New "Flex" data type that can contain data of various types like integers, floating points, strings, lists and maps
  • New query conditions for Flex lists to find a specific element
  • New query conditions for Flex maps to find elements with a specific key or key/value pair
  • New unique on-conflict strategy: replace conflicting objects (OBXPropertyFlags_UNIQUE_ON_CONFLICT_REPLACE)
  • New functions to attach to existing stores using only the file path (in the same process)
  • New APIs for ObjectBox Admin, the web based UI (formerly known as Object Browser): obx_admin_*
  • Minor performance improvements for indexed access
  • Major performance improvements for tree/GraphQL queries
  • ARM binaries are now built for minimal size reducing the library size significantly
  • New "no_reader_thread_locals" store option
  • Enable debug logging (requires a special build)
  • API: Type for query offsets and limits was changed from uint64_t to size_t
  • API: rarely used obx_txn_mark_success() was removed; use obx_txn_success()
  • API: feature checks consolidated to only use obx_has_feature()
  • Many internal improvements
  • Core version 3.0.1-2021-12-09

Sync​

  • New API for embedded server mode: obx_sync_server_* (implementation available on request)