What's Changed

• [ENH] Add support for FE tolerations by @HammadB in https://github.com/chroma-core/chroma/pull/2560
• [ENH] Support FE replica count by @HammadB in https://github.com/chroma-core/chroma/pull/2561
• [ENH] fix types export for CJS consumers/NPM types badge by @codetheweb in https://github.com/chroma-core/chroma/pull/2563
• [ENH] CIP: Write-Ahead Log Pruning & Vacuuming by @codetheweb in https://github.com/chroma-core/chroma/pull/2498
• [BUG]: Pydantic 1.9+ compatibility by @tazarov in https://github.com/chroma-core/chroma/pull/2229
• [BUG] HNSW Rust params should have defaults by @HammadB in https://github.com/chroma-core/chroma/pull/2564
• [ENH] enable retries on all gRPC channels by @codetheweb in https://github.com/chroma-core/chroma/pull/2572
• [TST] add hypothesis collection id to logs by @sanketkedia in https://github.com/chroma-core/chroma/pull/2573
• [ENH] return chroma-trace-id header, include trace ID in thrown errors by @codetheweb in https://github.com/chroma-core/chroma/pull/2570
• [ENH] Connection pool FD leak v2 by @tazarov in https://github.com/chroma-core/chroma/pull/2014
• [ENH] Properly display memberlist in SysDB by @Ishiihara in https://github.com/chroma-core/chroma/pull/2565
• [CHORE] Add logs to memberlist by @HammadB in https://github.com/chroma-core/chroma/pull/2583
• [CHORE] Add more debugs to memberlist by @HammadB in https://github.com/chroma-core/chroma/pull/2584
• [PERF] Trace auth requests by @HammadB in https://github.com/chroma-core/chroma/pull/2589
• [ENH] simplify logic for when to persist index changes (re-apply with fix) by @codetheweb in https://github.com/chroma-core/chroma/pull/2545
• [ENH] add .clean_log() to Producers by @codetheweb in https://github.com/chroma-core/chroma/pull/2549
• [ENH] automatically clean WAL by @codetheweb in https://github.com/chroma-core/chroma/pull/2557
• [ENH] add vacuum CLI command by @codetheweb in https://github.com/chroma-core/chroma/pull/2519
• [BUG]: Pydantic 1.x Union Types by @tazarov in https://github.com/chroma-core/chroma/pull/2577
• [PERF] Add sysdb catalog traces by @HammadB in https://github.com/chroma-core/chroma/pull/2593
• [ENH] Add sysdb cpu/memory requests and limits to helm chart by @HammadB in https://github.com/chroma-core/chroma/pull/2596
• [BUG] Sysdb k8s resource typo by @HammadB in https://github.com/chroma-core/chroma/pull/2600
• [ENH] JS Client Refactor (Full Stack) by @AlabasterAxe in https://github.com/chroma-core/chroma/pull/2542
• [ENH] add tracing to gorm by @codetheweb in https://github.com/chroma-core/chroma/pull/2606
• [ENH] propogate nested error message by @codetheweb in https://github.com/chroma-core/chroma/pull/2608
• [BUG] fix nil dereference during error log by @codetheweb in https://github.com/chroma-core/chroma/pull/2609
• [ENH] prefetch APIs for Record segment and blockfile by @sanketkedia in https://github.com/chroma-core/chroma/pull/2547
• [ENH] Dispatch prefetch() as operator by @sanketkedia in https://github.com/chroma-core/chroma/pull/2562
• [ENH] Tag operators as IO or other + dispatcher schedules IO tasks on the main runtime by @sanketkedia in https://github.com/chroma-core/chroma/pull/2603
• [TST] Isolated Test Environments using testcontainers by @AlabasterAxe in https://github.com/chroma-core/chroma/pull/2607
• [ENH] multipart S3 file uploads by @codetheweb in https://github.com/chroma-core/chroma/pull/2590
• [CLN] Refactor rust codebase into many crates by @HammadB in https://github.com/chroma-core/chroma/pull/2618
• [ENH]: only use multipart upload if object size > part size by @codetheweb in https://github.com/chroma-core/chroma/pull/2622
• [CLN] Move distance, and index into their own crates by @HammadB in https://github.com/chroma-core/chroma/pull/2624
• [BUG]: fix nightly test workflow by @codetheweb in https://github.com/chroma-core/chroma/pull/2635
• [BLD]: fix JS dev release workflow by @codetheweb in https://github.com/chroma-core/chroma/pull/2636
• [BUG] fix multi collection log purge by @codetheweb in https://github.com/chroma-core/chroma/pull/2617
• [ENH]: don't allow a null collection ID on segments by @codetheweb in https://github.com/chroma-core/chroma/pull/2626
• [CHORE] Move pull log trace record count to structured field by @HammadB in https://github.com/chroma-core/chroma/pull/2642
• [PERF] Make pull logs an I/O operator so it runs on main runtime by @HammadB in https://github.com/chroma-core/chroma/pull/2641
• [BUG] S3 client not respecting timeout by @HammadB in https://github.com/chroma-core/chroma/pull/2643
• [ENH] gRPC segment requests should include the collection ID by @codetheweb in https://github.com/chroma-core/chroma/pull/2613
• [PERF]: bump compaction partition size to 10k by @codetheweb in https://github.com/chroma-core/chroma/pull/2647
• [ENH]: allow configuring replica count of compaction service by @codetheweb in https://github.com/chroma-core/chroma/pull/2650
• [BUG]: fix tracing for IO tasks by @codetheweb in https://github.com/chroma-core/chroma/pull/2652
• [ENH]: fix compactor traces, add additional info to trace by @codetheweb in https://github.com/chroma-core/chroma/pull/2653
• [ENH]: add record count to span when submitting embeddings by @codetheweb in https://github.com/chroma-core/chroma/pull/2654
• [ENH] fix embedding validation span pollution by @codetheweb in https://github.com/chroma-core/chroma/pull/2658
• [ENH]: lift frontend gRPC retry to application & trace by @codetheweb in https://github.com/chroma-core/chroma/pull/2659
• [ENH] Fetch blocks in parallel and make load_blocks take a slice instead by @HammadB in https://github.com/chroma-core/chroma/pull/2662
• [CLN] Only use distance avx/neon/sse if enabled by @HammadB in https://github.com/chroma-core/chroma/pull/2664
• [BLD]: fix nightly tests pod log upload by @codetheweb in https://github.com/chroma-core/chroma/pull/2670
• [ENH] Make Rust/C++ FFI error handling robust by @HammadB in https://github.com/chroma-core/chroma/pull/2667
• [ENH] Add timeouts to FE grpc clients by @HammadB in https://github.com/chroma-core/chroma/pull/2671
• [ENH]: allow using node selectors for pods instead of tolerations by @codetheweb in https://github.com/chroma-core/chroma/pull/2672
• [ENH] [PERF] add indices to metadata columns by @levand in https://github.com/chroma-core/chroma/pull/2623
• [BLD]: bump time dependency by @codetheweb in https://github.com/chroma-core/chroma/pull/2679
• [ENH]: skip brute force search when log is empty by @codetheweb in https://github.com/chroma-core/chroma/pull/2666
• [ENH]: allow configuring replicaCount and nodeSelector on log service by @codetheweb in https://github.com/chroma-core/chroma/pull/2678
• [ENH]: improve compaction traces by @codetheweb in https://github.com/chroma-core/chroma/pull/2680
• [ENH] Network Admission Control APIs by @sanketkedia in https://github.com/chroma-core/chroma/pull/2628
• [ENH] Construct and pass NAC by @sanketkedia in https://github.com/chroma-core/chroma/pull/2630
• [ENH] Block manager and HNSW provider consume Network Admission Control by @sanketkedia in https://github.com/chroma-core/chroma/pull/2631
• [ENH] NAC rate limits requests by @sanketkedia in https://github.com/chroma-core/chroma/pull/2632
• [ENH]: use follows_from() standard instead of manually adding parent attribute by @codetheweb in https://github.com/chroma-core/chroma/pull/2691
• [ENH]: cleanup HNSW temporary files after registering result by @codetheweb in https://github.com/chroma-core/chroma/pull/2646
• [PERF] Multipart s3 downloads passing through NAC by @sanketkedia in https://github.com/chroma-core/chroma/pull/2698
• [CLN] Reorganize delta module into seperate module and split out impls and [PERF] Refactor bf get_size to avoid nested loops by @HammadB in https://github.com/chroma-core/chroma/pull/2674
• [ENH] Evict other versions of hnsw index of the collection when another version is fetched by @sanketkedia in https://github.com/chroma-core/chroma/pull/2707
• [ENH]: add metric for total # of uncompacted log records by @codetheweb in https://github.com/chroma-core/chroma/pull/2696
• [ENH] Add gc for log service by @Ishiihara in https://github.com/chroma-core/chroma/pull/2634
• [BUG]: fix log service metrics service name by @codetheweb in https://github.com/chroma-core/chroma/pull/2713
• [PERF] Binary search get_prefix() calls in blockfile by @sanketkedia in https://github.com/chroma-core/chroma/pull/2717
• [ENH]: update JS CloudClient to accept tenant parameter by @codetheweb in https://github.com/chroma-core/chroma/pull/2726
• [ENH]: add config fields for max partition size & max compaction size in compactor by @codetheweb in https://github.com/chroma-core/chroma/pull/2732
• [PERF] Decrease compaction RAM usage and increase speed by @sanketkedia in https://github.com/chroma-core/chroma/pull/2729
• [PERF]: remove mutex around tokenizer by @codetheweb in https://github.com/chroma-core/chroma/pull/2735
• [PERF]: better locking of uncommitted tracking maps (decrease compaction time by 3x) by @codetheweb in https://github.com/chroma-core/chroma/pull/2736
• [ENH]: purge block cache after compaction by @codetheweb in https://github.com/chroma-core/chroma/pull/2741
• [PERF] Move write to blockfiles off main runtime by @sanketkedia in https://github.com/chroma-core/chroma/pull/2740
• [ENH] Synchronize post s3.get() operations in providers by @sanketkedia in https://github.com/chroma-core/chroma/pull/2712
• [ENH]: make test_sanity recall based by @codetheweb in https://github.com/chroma-core/chroma/pull/2742
• [PERF] Add include metadata to MetadataReader to avoid unncessary payload size by @HammadB in https://github.com/chroma-core/chroma/pull/2750
• [PERF]: speed up get_target_block_id() by @codetheweb in https://github.com/chroma-core/chroma/pull/2743
• [ENH]: skip querying MetadataSegmentReader for empty where clause by @codetheweb in https://github.com/chroma-core/chroma/pull/2711
• [ENH] reset back to previous JS api, keeping other improvements by @jeffchuber in https://github.com/chroma-core/chroma/pull/2714
• [BLD]: add debug info to Rust release binaries by @codetheweb in https://github.com/chroma-core/chroma/pull/2773
• [ENH] Weighted LRU for HNSW provider cache by @Ishiihara in https://github.com/chroma-core/chroma/pull/2697
• [ENH]: use jemalloc for compactor service by @codetheweb in https://github.com/chroma-core/chroma/pull/2777
• [BUG] Smaller batch size by @HammadB in https://github.com/chroma-core/chroma/pull/2781
• [BLD]: bump version of upload-artifact actions by @codetheweb in https://github.com/chroma-core/chroma/pull/2782
• [DOC] fix meta tags by @jeffchuber in https://github.com/chroma-core/chroma/pull/2786
• [BLD]: use cache mount in Rust Dockerfile by @codetheweb in https://github.com/chroma-core/chroma/pull/2779
• [ENH]: GET /databases should return 404 instead of 500 for not found by @codetheweb in https://github.com/chroma-core/chroma/pull/2788
• [BLD]: run Rust integration tests in CI by @codetheweb in https://github.com/chroma-core/chroma/pull/2787
• [CLN] Propagate errors for block get/fork by @HammadB in https://github.com/chroma-core/chroma/pull/2778
• [DOC] fix docs build by @jeffchuber in https://github.com/chroma-core/chroma/pull/2794
• [DOC] Add description for query_uris parameter in collection query method by @ragul-kachiappan-dev in https://github.com/chroma-core/chroma/pull/2656
• [DOC] add levands clojure client to docs by @jeffchuber in https://github.com/chroma-core/chroma/pull/2802
• [DOC] Update JS client documentation by @david1542 in https://github.com/chroma-core/chroma/pull/2233
• [DOC]: use pnpm add <pkg> instead of pnpm install <pkg> by @jferrettiboke in https://github.com/chroma-core/chroma/pull/2629
• [DOC] Update the add function in the guide, which is currently using the old version with text instead of documents. by @sonnhfit in https://github.com/chroma-core/chroma/pull/2550
• [CHORE] DeprecationWarning in httpx_content.py:202: by @LukasWestholt in https://github.com/chroma-core/chroma/pull/2509
• [ENH] add docs for vacuum CLI command by @codetheweb in https://github.com/chroma-core/chroma/pull/2595
• [DOC]: remove docs for reverted JS refactor by @codetheweb in https://github.com/chroma-core/chroma/pull/2805
• [DOC]: Update Langchain integration example and fix broken link by @ishaksebsib in https://github.com/chroma-core/chroma/pull/2771
• [DOC]: Yarn package install in getting-started.md by @DuYongLee in https://github.com/chroma-core/chroma/pull/2566
• [BUG] - Fix tailwind themes in docs by @itaismith in https://github.com/chroma-core/chroma/pull/2808
• [CLN] Support numpy >=2.0 by @HammadB in https://github.com/chroma-core/chroma/pull/2811
• [BUG] Test that query result shapes are correct in invariants by @drewkim in https://github.com/chroma-core/chroma/pull/2807
• [CLN] Add batch size errors by @HammadB in https://github.com/chroma-core/chroma/pull/2812
• [BUG] Fix CVP tests by forcing numpy reimport by @HammadB in https://github.com/chroma-core/chroma/pull/2814
• [BUG] Fix I32Array BW compat by @HammadB in https://github.com/chroma-core/chroma/pull/2815
• [ENH] Update client telemetry for developer cloud by @itaismith in https://github.com/chroma-core/chroma/pull/2785
• [RELEASE] 0.5.6 by @itaismith in https://github.com/chroma-core/chroma/pull/2817

New Contributors

• @ragul-kachiappan-dev made their first contribution in https://github.com/chroma-core/chroma/pull/2656
• @david1542 made their first contribution in https://github.com/chroma-core/chroma/pull/2233
• @jferrettiboke made their first contribution in https://github.com/chroma-core/chroma/pull/2629
• @sonnhfit made their first contribution in https://github.com/chroma-core/chroma/pull/2550
• @LukasWestholt made their first contribution in https://github.com/chroma-core/chroma/pull/2509
• @ishaksebsib made their first contribution in https://github.com/chroma-core/chroma/pull/2771
• @DuYongLee made their first contribution in https://github.com/chroma-core/chroma/pull/2566
• @itaismith made their first contribution in https://github.com/chroma-core/chroma/pull/2808
• @drewkim made their first contribution in https://github.com/chroma-core/chroma/pull/2807

Full Changelog: https://github.com/chroma-core/chroma/compare/0.5.5...0.5.6