Dragonfly v2.1

This release is important because starting from this version, it changes how teams can use our software in production.
Starting from v2.1.0 the project moves from BUSL-1.1 to the Dragonfly Source-Available License (DSAL).

For more details, please read https://www.dragonflydb.io/blog/introducing-dragonfly-enterprise

Besides this much of the work is hardening. ACL enforcement is stricter, credentials are redacted from logs, and many crashes and deadlocks are fixed across blocking commands, tiered storage, Lua and search. Search gains index aliases, multi-attribute fields and punctuation-aware queries. There is also an experimental append-only-file (AOF) persistence mode, and a number of throughput and memory improvements.

Highlights

Dragonfly's licence changes from BSL 1.1 to DSAL, starting with v2.1 (#8739).
The RESP IoLoopV2 is now enabled by default (#8576).
Search gains FT.ALIAS* commands, alias-aware queries and multiple attributes per field (#8556, #8649, #8604).

Commands

Without --bind, Dragonfly now listens on :: on dual-stack hosts, serving IPv4 and IPv6 from one listener (#8682).
Added CLIENT TRACKINGINFO (#8497).
Added the lua_max_stall_ms flag, which kills Lua scripts that block their thread before writing (#8426).
Added the --list_compress_policy flag. --list_compress_dict_threshold is deprecated (#8008).
DEBUG OBJHIST now covers JSON, streams and sketches (#8656).
Added the io_threads and max_connected_clients_per_thread Prometheus metrics (#8701).
INFO expired_keys and evicted_keys are now cumulative across FLUSHDB/FLUSHALL and reset only by CONFIG RESETSTAT (#8562).

Performance

During replica full sync, writes to buckets the snapshot has not yet reached skip forced early serialization. This now also works with a second replica and for EXPIRE-family commands (#8112).
DFLYCLUSTER GETSLOTINFO collects stats per shard round, with bounded memory (#8715).
The background sweep that flushes unowned slots after a migration is now throttled (#8641).
Inline single-shard transactions are faster, with [about 5% fewer cycles and about 8% fewer instructions] (#8609).
Added the opt-in --shard_sidekiq_queues flag so Sidekiq queues and their private queues share a shard (#8642).
Single-shard BLMOVE/BRPOPLPUSH completes in one hop when data is available (#8638).
Reduced the CPU overhead of cache-mode bumps (#8589).
Added edge_depth to --list_compress_policy (#8334).
Double formatting now uses dragonbox, [about 1.8–3.6x faster] (#8461).
OAHTable now shrinks its bucket array automatically (#8454).
V2 connections now flush replies right after a pipeline squash (#8431).
V2 parse-loop lookups are cached per parsing segment (#8230).
MGET and Memcache multi-get return large values zero-copy, and the borrow threshold is lowered to 8KB (#8420).
CLUSTER SLOTS and CLUSTER SHARDS batch their replies, [from about 7000 socket writes to fewer than 100 for 1024 ranges] (#8390).
Shard shutdown frees the whole heap in one operation (#8336).
SCAN now packs returned keys into a single buffer (#8314).
SCAN expiry checks and key extraction are faster (#8297).
The journal is turned off automatically on shards where nothing uses it (#8259).
Faster ASCII string decoding (#8295).
Tiered storage's external allocator frees pages in O(1) and [halves descriptor RAM from about 128MB to 64MB per TB] (#8527).

Replication

Added Prometheus metrics for snapshot and replica-disconnect state (#8740).
S3 snapshot upload sockets are now paced to snapshot_egress_limit_bytes. Added --s3_upload_traffic_mark (#8719).

Search

FT.CREATE now stores the INDEXMISSING, INDEXEMPTY and UNF flags. FT.INFO output is aligned with the reference (#8720).
FT.ALTER and FT.DROPINDEX accept index aliases (#8683).
Search commands resolve aliases created with FT.ALIASADD (#8649).
Added FT.ALIASADD, FT.ALIASUPDATE and FT.ALIASDEL (#8556).
Aliases are persisted in snapshots and sent to replicas on full sync (#8624).
The schema is keyed by alias, so a HASH field can have several attributes (#8604).
JSON indexes accept the same path under several aliases (#8651).
Queries accept punctuation inside words, such as @email:*example.com* (#8419).
FT.INFO percent_indexed reports real build progress (#8428).

Security

CONFIG SET values and ACL SETUSER tokens are no longer exposed in logs, SLOWLOG or error replies (#8659).
Fixed ACL category mismatches with Redis (#8308).

Metrics & Observability

Prometheus dragonfly_rdb_serialize_total, dragonfly_save_in_progress and dragonfly_replica_disconnects_total{reason} are exported (#8740).
Added V2 RESP IO loop and pipeline squash counters (#8557).
pipeline_latency_seconds is split by a type label (read or other) (#8535).

AOF Persistence (Experimental)

Added manifest-driven startup for --aof, with adoption of an existing snapshot as the base (#8502).
Added AOF replay at startup, run in parallel per shard (#8484).
The AOF chain reader now reads in 128 KB buffered chunks (#8610).
The chain reader detects a torn or damaged tail and replays the valid prefix (#8570).
The segment writer fdatasyncs once per second, tracks a durable LSN and handles I/O errors (#8464).

Cloud & Storage

Added an opt-in background repack scan for tiered storage to reduce disk fragmentation (#8007).
DEBUG OBJHIST reports the data size of tiered values (#8655).
Large disk allocations are now counted in tiered storage accounting (#8377).

Bug Fixes

Cluster slot flush now covers every database (#8669).
Fixed tiered small-bin leaks and stash-failure handling (#8636).
Fixed ACL key-permission checks for read-write commands (#8721).
Refactored ACL family code. ACL LOG is now newest first, and duplicate users are no longer double-counted (#8687).
Saves are cancelled when the server enters LOADING, and blocked clients are unblocked (#8505).
Hardened ACL file handling (#8681).
Search index definitions with spaces or control bytes now persist correctly (#8696).
TIME replies with bulk strings (#8712).
Fixed a deadlock when XINFO or JSON.DEBUG ran in single-shard Lua scripts (#8648).
A search index dropped during an HNSW query now returns an error (#8702).
The per-index map for hash fields with a TTL now shrinks after removals (#8672).
Replicas keep FT.SYNUPDATE groups during full sync (#8671).
Fixed a crash in ACL SETUSER with an empty category (#8685).
A cloud storage init failure at runtime no longer kills the server (#8689).
WAIT honors its timeout (#8668).
Fixed ACL gaps in RM and CLIENT/MEMORY admin subcommands (#8627).
Expired TTL hash fields no longer leave stale postings in search indices (#8657).
FT.SEARCH SORTBY ties are now ordered deterministically (#8664).
Fixed a master crash when WAIT ran against a stalled replica (#8665).
Fixed HELLO AUTH credential leaks (#8612).
Rejected * and <ms>-* stream IDs outside XADD (#8634).
Internal synonym tokens no longer leak into search results (#8603).
Cache mode no longer lets MSET evict its own key (#8630).
Empty consumer and group names are accepted (#8631).
Fixed ACL category regressions (#8614).
Blocking XREAD/XREADGROUP now serves every ready stream (#8595).
Fixed transaction polls dropped while a transaction was running (#8538).
Fixed a crash in blocking commands when watched keys expire (#8593).
Fixed a crash in multi-shard MGET with tiered keys (#8539).
Fixed PFMERGE writing the destination on every shard (#8602).
The idle timeout now also closes connections that never sent a byte (#8368).
FT.ALTER keeps synonym groups (#8580).
FT.INFO lists fields in declaration order (#8569).
An expired key is now treated as missing regardless of its type (#8581).
BM25 scores no longer depend on the shard count (#8542).
Fixed a DENYOOM abort after hours of uptime (#8575).
Fixed ordering of control messages on V2 connections after a parser error (#8547).
Client tracking now invalidates keys on expiry or eviction (#8563).
Fixed replica epoll starvation in the stable-sync loop (#8559).
Fixed keyspace notifications sent from atomic sections (#8558).
Fixed tiered allocator segment queue corruption (#8528).
Fixed hangs when replaying an AOF in which a shard's log ends early (#8543).
V2 now handles protocol errors in order (#8541).
Fixed vector queries combined with SORTBY (#8540).
Fixed stale QList node indices (#8488).
Fixed a stuck-queue hang with tiering and SAVE/BGSAVE (#8520).
Fixed Lua result serialization with wrapper fields (#8517).
Fixed QList ZSTD handling of dont_compress nodes (#8487).
Fixed a stack overflow on deeply nested search queries (#8492).
Fixed a crash after a failed load of a snapshot with search indices (#8500).
Fixed a slot migration cancel race (#8473).
Partial sends now refresh progress, so --send_timeout no longer closes healthy connections (#7536).
Fixed missing keys in snapshots with tiering (#8457).
Fixed INFO rdb_bgsave_in_progress staying at 1 (#8459).
SORT BY/GET handles offloaded strings (#8436).
Zero-padded MONITOR microseconds (#8437).
The ACL file parser accepts 3-token rules (#8399).
CONFIG SET requirepass now replaces existing passwords (#8403).
Fixed possible use-after-free in SUNION, SDIFF, SINTER and ZRANDMEMBER (#8393).
FT.PROFILE reports shard errors (#8391).
SCAN and KEYS hide expired keys during CLIENT PAUSE (#8362).
Fixed an SCRIPT FLUSH deadlock (#8110).
Glob matching is now iterative and no longer overflows the stack (#8350).
Expired keys are hidden during a write pause (#8323).
Fixed QList recompression (#8333).
The cluster config parser rejects invalid health values (#8306).
Fixed RESPParser heap lifetime (#8307).
TopK uses the data heap (#8312).
Corrected ACL categories (#8311).
Parked commands are released when the connection closes during CLIENT PAUSE (#8296).
QList tiering metadata uses the data heap (#8313).
Fixed connection close-path bugs (#8316).
Fixed a mimalloc mi_heap_destroy crash (#8285).
Fixed ACL checks for source/destination commands (#8249).
Fixed SORT STORE replication (#8298).
Replicas advertise the master's announced address in emulated cluster mode (#8241).
DFLYMIGRATE no longer crashes without cluster mode (#8290).

What's Changed

refactor: use ascii_unpack_fast to improve GetString performance by @BorysTheDev in #8295
fix(cluster): reject DFLYMIGRATE without cluster mode by @foobar in #8290
fix(tests): download the S3 fixture server from silo instead of dl.min.io by @vyavdoshenko in #8301
fix(cluster): advertise the master's announced address on replicas in emulated mode by @vyavdoshenko in #8241
fix(server): Fix sort .. store replication by @abhijat in #8298
tools: Add scripts and UI for ci dashboard by @abhijat in #7930
feat(server): Turn off journal after a bound by @abhijat in #8259
refactor: use RESPParser for Redis replication by @BorysTheDev in #8211
refactor: improve SCAN iterator/expiration performance by @BorysTheDev in #8297
fix(acl): per key permission check for read-write commands by @kostasrim in #8249
fix: crash in mimalloc mi_heap_destroy by @kostasrim in #8285
chore: move watchdog after shard destruction by @kostasrim in #8286
refactor: FuncSHA1 for interpreter by @BorysTheDev in #8310
fix(facade): two connection close-path fixes by @romange in #8316
fix: macos build missing header by @vyavdoshenko in #8320
refactor: prepare the CLIENT PAUSE release path by @romange in #8317
chore(deps): bump actions/checkout from 6 to 7 in the actions group by @dependabot[bot] in #8315
fix: reduce script load contention by @BorysTheDev in #8321
chore: qlist should use data heap only for all allocations by @kostasrim in #8313
fix: missmatch in acl categories by @kostasrim in #8308
fix(server): release commands parked by CLIENT PAUSE when the connection closes by @vyavdoshenko in #8296
feat(ci): verify acl categories match valkey by @kostasrim in #8311
fix(server): Fix blocking crash on wrongtype by @dranikpg in #8305
feat: pack scan result to get better performance by @BorysTheDev in #8314
fix: topk should use data heap for all allocations by @kostasrim in #8312
fix: RESPParser should use backing heap by @kostasrim in #8307
chore(helm-chart): update to v2.0.0 by @github-actions[bot] in #8332
test: synchronize BLMPopBlocking lock assertion by @romange in #8330
fix(cluster): reject invalid cluster node health values in config parser by @Tyagiquamar in #8306
refactor(server): migrate StartMultiLockedAhead chain to ParsedArgs by @romange in #7803
fix: seeder hash compare for CF by @kostasrim in #8339
fix(tls): Allow JWT authentication with TLS by @tjovicic in #8322
Remove compact object Huffman encoding by @romange in #8338
refactor: inline lua reply stack by @BorysTheDev in #8341
fix: macos and fedora build by @kostasrim in #8342
fix(qlist): guard ZSTD dictionary recompression by @romange in #8333
fix: jwt auth default without password should be rejected by @kostasrim in #8291
fix(rdb): validate hash/zset listpacks deeply on load, surface load errors by @vyavdoshenko in #8328
test(ci): enable more Valkey TCL suites in the external-mode gate by @vyavdoshenko in #8343
server: Expired keys should hide even on write pause by @abhijat in #8323
fix: hash field expiration accuracy by @BorysTheDev in #8340
refactor: use ScanResult for SCAN cmd family by @BorysTheDev in #8352
refactor: improve lua performance by @BorysTheDev in #8335
docs(readme): refresh README by @szepeviktor in #8358
perf: one-shot data heap destruct by @kostasrim in #8336
chore: update mimalloc to v2.5.2 by @kostasrim in #8349
refactor: reuse expiration code for set and hset by @BorysTheDev in #8363
fix(core): match globs iteratively so a pattern cannot overflow the fiber stack by @vyavdoshenko in #8350
fix(ci): demultiplex mangled output stream by @kostasrim in #8351
fix: non-blocking interpreter pool so SCRIPT FLUSH can't deadlock by @vyavdoshenko in #8110
server: hide expired keys during client pause by @abhijat in #8362
ci: revert V2 regression test by @glevkovich in #8371
feat(qlist): add --list_compress_policy for list compression by @romange in #8008
CI: status dashboard workflow improvments by @abhijat in #8347
fix(tests): add replication barrier to test by @abhijat in #8369
feat(ci): upload core dumps on reg-test failures by @kostasrim in #8364
chore: remove committed_golden validation metric by @romange in #8373
fix(tiering): Account for large disk allocations by @romange in #8377
CI: compress JSON files for dashboard in parallel by @abhijat in #8375
Revert "ci: revert V2 regression test" by @glevkovich in #8376
refactor: remove RedisParser from dflybench by @BorysTheDev in #8381
refactor: remove RedisParser for resp-validator by @BorysTheDev in #8379
fix: reject empty field names and consume SETID parse errors by @vyavdoshenko in #8385
fix(search): make FT.PROFILE report shard errors like FT.SEARCH by @vyavdoshenko in #8391
docs(replication): describe current backlog retention flags by @ZainnQureshii in #8383
perf: batch reply for cluster slots/shards by @kostasrim in #8390
fuzz: make crash replay find the input that actually crashed the server by @vyavdoshenko in #8396
chore(server): Remove unused OpDel, minor cleanups by @abhijat in #8397
fix(set): set OAHset implementation instead of StringSet by @vyavdoshenko in #8398
fix: enforce launder iterators for preemptive commands by @kostasrim in #8393
feat: use valkey hash expiry format by default by @BorysTheDev in #8370
refactor(journal): split JournalStreamer into BufferedSocketWriter + consumers by @romange in #8395
ci: add stale workflow for inactive issues and PRs by @romange in #8416
CI: persist test summaries over time and reuse them by @abhijat in #8353
refactor(server): share bucket traversal loop between snapshot and migration by @romange in #8417
feat(server): make scoped-memory metric account for deletes by @abhijat in #8387
perf(facade): cache V2 parse-loop lookups by @glevkovich in #8230
fix: test_network_disconnect_during_migration by @BorysTheDev in #8423
refactor: migrate outgoing migration to RESPParser by @BorysTheDev in #8389
refactor(server): share SerializeBucketLocked between snapshot and migration by @romange in #8422
chore: retire JSON flags and remove flat JSON storage by @romange in #8382
feat(server): Track memory drop in async deletes by @abhijat in #8401
chore: jwt authentication should be static by @kostasrim in #8415
fix: match config set requirepass to valkey by @kostasrim in #8403
chore(server): Use ranges::find and set::contains by @abhijat in #8425
feat(server): extend get_zero_copy to MGET and retire mget_dedup_keys by @romange in #8420
docs: add sharded AOF design proposal by @romange in #8394
fix(acl): accept 3-token user rules in aclfile parser (#8299) by @Tyagiquamar in #8399
fix(facade): reply after V2 pipeline squash by @glevkovich in #8431
fix(server): zero-pad the microseconds in MONITOR timestamps by @vyavdoshenko in #8437
chore(build): link helio/build-dbg to the build dir for clangd by @romange in #8438
feat(search): support punctuation inside query words (e.g. @email:example.com) by @vyavdoshenko in #8419
fix(server): read offloaded strings in SORT BY/GET instead of aborting by @vyavdoshenko in #8436
feat(search): report real index build progress in FT.INFO percent_indexed by @vyavdoshenko in #8428
chore(tiering): Expose external alloc metrics/stats by @dranikpg in #8384
fix(tiering): Disable cooling during load by @dranikpg in #8144
feat: add error processing for unsupported rdb by @BorysTheDev in #8421
fix(tests): pin redis-py below 8 by @kostasrim in #8453
refactor: remove RedisParser from replica by @BorysTheDev in #8452
fix(server): clear rdb_bgsave_in_progress when BGSAVE finishes by @vyavdoshenko in #8459
feat: add auto shrink for OAHTable by @BorysTheDev in #8454
Update compatible external dependencies by @romange in #8460
Replace double-conversion with dragonbox for double formatting by @romange in #8461
refactor: complete remove RedisParser by @BorysTheDev in #8465
fuzz: pair a crash with its RECORD set by content, not by number by @vyavdoshenko in #8467
core(lua): allow script which has not written to exit on time budget elapse by @abhijat in #8426
fix(snapshot): wait for delayed entries taken over by writers before the final flush by @vyavdoshenko in #8457
chore(deps-dev): bump urllib3 from 2.7.0 to 2.8.0 by @dependabot[bot] in #8455
fix: HSNW index restoration crash by @BorysTheDev in #8466
fix(facade): track partial-send progress in SinkReplyBuilder by @romange in #7536
Report anonymous deployment info with the version check by @romange in #8469
fix: SlotMigrationStreamer::Cancel() waits for Run finish by @BorysTheDev in #8473
feat(aof): add aof on-disk format and block builder by @kostasrim in #8439
feat(aof): add segment writer by @kostasrim in #8456
fix: WaitUntilLocked should not poll IsLocked on success by @kostasrim in #8480
refactor: test_replicate_old_master, detach the replica before shutti… by @BorysTheDev in #8481
feat: Print fiber stacks before pytest timeout teardown by @BorysTheDev in #8482
server: Add metric for type mem delta by @abhijat in #8434
feat(aof): durability and basic error handling by @kostasrim in #8464
server: remove shutdown watchdog by @abhijat in #8490
chore(helm-chart): update to v2.0.2 by @github-actions[bot] in #8496
feat(aof): aof streamer, flags, init and simple test by @kostasrim in #8470
server: Log warning on cancelled snapshot, not error by @abhijat in #8499
fix(search): drop search indices left unbuilt by a failed load by @vyavdoshenko in #8500
fix(search): prevent stack overflow on deeply nested queries by @vyavdoshenko in #8492
fix(test): DeleteExpiredStep should run in fiber context by @kostasrim in #8503
tests: Make setex task run until after replica connection finishes by @abhijat in #8504
refactor: improve stream performance by @BorysTheDev in #8507
refactor: DflyShardReplica::ExecuteTx into JournalApplier by @kostasrim in #8471
fix(facade): build against OpenSSL 4 by @vyavdoshenko in #8509
refactor: store tag affixes as plain values by @BorysTheDev in #8511
refactor: search, add ast access helpers by @BorysTheDev in #8514
refactor: transfer AST ownership through expression by @BorysTheDev in #8515
refactor: dispatch AST visits throught virtual nodes by @BorysTheDev in #8518
Report deployment env, role and finer cloud in version check by @romange in #8498
fix(qlist): skip dont_compress and rejected nodes in ZSTD dict compression by @romange in #8487
refactor: move global cmd rendezvous from JournalApplier to MultiShardExecution by @kostasrim in #8526
chore(ci): allow repeating selected large tests in Heavy Tests by @romange in #8524
refactor: add lua bench and fix bug by @BorysTheDev in #8517
perf(tiering): O(1) free page removal in ExternalAllocator by @romange in #8527
fix(transaction): drain deferred poll after optimistic SingleHopAsync by @miledxz in #8520
refactor(search): resolve projected fields once per query by @vyavdoshenko in #8519
chore: remove deprecated ParsedCommand::ReplyWith by @romange in #8534
feat(metrics): split pipeline_latency_seconds by read/other command type by @romange in #8535
fix(qlist): keep node indices accurate across merges and erase by @romange in #8488
fix(search): index a multi-group synonym term under every group token by @vyavdoshenko in #8516
fix: test_replicate_old_master by @BorysTheDev in #8513
refactor: simplify MultiShardExecution rendezvous by @kostasrim in #8529
refactor: raw field access, bounded recursive lua reply conversion by @BorysTheDev in #8536
fix(search): load the SORTBY value of vector queries apart from the reply fields by @vyavdoshenko in #8540
refactor: search performance improvement by @BorysTheDev in #8544
fix(resp): drain V2 parser errors by @glevkovich in #8541
feat(aof): remove torned aof flows from MultiShardExecution by @kostasrim in #8543
test(facade): replace the timing-dependent v1 protocol-error test by @vyavdoshenko in #8550
refactor: added CRTP-generated callbacks for AST nodes by @BorysTheDev in #8546
settings: Fix claude settings warnings by @abhijat in #8554
fix(tiering): fix segment queue corruption and release empty segments by @romange in #8528
refactor: remove IsResultSafe by @BorysTheDev in #8545
chore(ci): limit loopback MTU to 9000 in regression test workflows by @romange in #8525
refactor(db_slice): collapse expiry entry points into TryExpire by @romange in #8558
fix(replica): yield in the stable-sync flow loop so a lagging flow cannot starve its thread by @vyavdoshenko in #8559
fix(db_slice): queue the tracking invalidation before erasing the entry by @romange in #8563
fix(resp): preserve V2 control ordering by @glevkovich in #8547
search: Add alias support by @abhijat in #8556
refactor(server): keep expired/evicted key counters only per db by @romange in #8562
refactor(resp): simplify V2 parser drain code by @glevkovich in #8566
refactor(journal): make DisableFlushGuard restore the flush mode it found by @romange in #8565
feat(aof): chain reader skeleton by @kostasrim in #8568
refactor(db_slice): make Del take a PrimeIterator by @romange in #8564
tests: use v1.25.3 instead of v1.19.2 in the replication compatibility tests by @vyavdoshenko in #8574
feat: reuse wrapper keys in interpeter by @BorysTheDev in #8561
fix(server): drop the usec-keyed memory cache from ShouldDenyOnOOM by @vyavdoshenko in #8575
fix(search): make BM25 scores independent of the shard count by @vyavdoshenko in #8542
fix(db_slice): treat an expired key as missing regardless of its type by @romange in #8581
chore(engine_shard): drop redundant continuation reset after a concluding hop by @romange in #8587
refactor(db_slice): queue expired events in TryExpire instead of returning them by @romange in #8588
refactor(qlist): rename compression policy setters by @romange in #8537
chore(server): New error logs for loader by @dranikpg in #8501
refactor: improve search queries performance by @BorysTheDev in #8592
refactor(search): order schema fields by declaration, feed indices from one list by @vyavdoshenko in #8569
fix(search): keep synonyms over FT.ALTER by @vyavdoshenko in #8580
feat: avoid key slot recalculation by @BorysTheDev in #8597
fix(server): apply idle timeout to connections that never sent a byte by @shahyash2609 in #8368
fix(server): write PFMERGE destination only on its own shard by @vyavdoshenko in #8602
refactor: improve search union op performance by @BorysTheDev in #8600
feat(facade): enable RESP IoLoopV2 by default by @glevkovich in #8576
feat(metrics): export V2 pipeline counters by @glevkovich in #8557
feat(server): implement CLIENT TRACKINGINFO by @miledxz in #8497
feat(qlist): make the uncompressed edge zone depth configurable by @romange in #8334
test: Make test_pubsub_slow_subscriber_closed more reliable. by @glevkovich in #8605
feat(aof): detect torn tail in chain reader by @kostasrim in #8570
fix(server): Ensure storage for TS read lives long enough by @abhijat in #8539
chore(server): add single-key transaction micro-benchmark by @romange in #8601
refactor(transaction): keep blocking wake reservations only in BlockingController by @romange in #8596
feat: use lua internals to get better performance by @BorysTheDev in #8599
chore(server): fix compiler and clang-tidy warnings by @romange in #8611
refactor: remove unused C++ code by @vyavdoshenko in #8613
fix(blocking): do not suspend while NotifyPending iterates watch tables by @romange in #8593
perf(db_slice): reduce the overhead of cache-mode bumps by @romange in #8589
feat(aof): read once and buffer by @kostasrim in #8610
fix(stream): serve every ready stream to a woken multi-stream read by @romange in #8595
CI: add tests for CI dashboard generation by @abhijat in #8435
feat(ci-test-dashboard): add GitHub issues, PRs, assignees by @glevkovich in #8608
fix(acl): restore ACL categories regressed by #8308 and #8311 by @vyavdoshenko in #8614
fix(stream): accept empty consumer and group names by @vyavdoshenko in #8631
fix(server): register key locks of optimistic transactions in cache mode by @vyavdoshenko in #8630
fix(search): keep synonym group tokens out of user queries by @vyavdoshenko in #8603
fix(server): Fix omits cause inconsistencies during migrations by @dranikpg in #8619
fix(stream): reject "" and "-" as explicit stream IDs outside XADD by @vyavdoshenko in #8634
fix(server): hide HELLO AUTH credentials in logs, MONITOR and SLOWLOG by @vyavdoshenko in #8612
feat(search): key the schema by alias, allow several attributes on one HASH field by @vyavdoshenko in #8604
fix(server): Conclude single shard BLMOVE in one hop when data is ava… by @dranikpg in #8638
fix(tests): make Proxy own accepted sockets so close() cannot leak one by @vyavdoshenko in #8637
refactor: improve search negate operation by @BorysTheDev in #8639
perf(sidekiq): map private and public queue to same shard by @kostasrim in #8642
tests: Adjust time to wait for cooldown by @abhijat in #8590
feat: add slot stats for several databases by @BorysTheDev in #8643
chore(server): remove WITH_AWS build branches from snapshot storage by @miledxz in #8626
feat(aof): error codes in replay chain reader by @kostasrim in #8616
chore(search): persist and load alias definitions in snapshot by @abhijat in #8624
feat(search): allow several attributes on one JSON path by @vyavdoshenko in #8651
fix: SADD return value by @BorysTheDev in #8652
fix: migration SYNC timeout by @BorysTheDev in #8491
chore(server): split the transaction benchmark and add an async batched variant by @romange in #8615
chore(deps-dev): bump aiohttp from 3.14.3 to 3.14.4 by @dependabot[bot] in #8620
feat(aof): replay and e2e test by @kostasrim in #8484
fix(transaction): replay dropped polls of blocked transactions by @vyavdoshenko in #8538
perf(server): speed up inline single-shard transactions by @romange in #8609
chore(server): hold running_tx_ in DEBUG POPULATE instead of RunSquashedMultiCb by @romange in #8658
fix(server): hide CONFIG SET values and ACL SETUSER tokens in logs and errors by @vyavdoshenko in #8659
fix: wait command preempts in atomic section by @kostasrim in #8665
fix(search): order SORTBY ties by key and rank missing values last by @vyavdoshenko in #8664
fix(search): remove expired hash field values from search indices by @vyavdoshenko in #8657
fix(acl): give CLIENT/MEMORY admin subcommands their own ACL categories, check RM keys by @vyavdoshenko in #8627
Report data size of tiered values in DEBUG OBJHIST by @romange in #8655
fix(search): build sort_indices.cc against libc++. (macOS fix) by @vyavdoshenko in #8675
chore(deps): bump certifi from 2026.7.22 to 2026.10.19 by @dependabot[bot] in #8650
test: replace hard-coded shard keys with named constants by @avy252004 in #8618
chore(deps): bump setuptools from 84.0.0 to 84.1.0 by @dependabot[bot] in #8676
feat(search): Make search commands aware of aliases by @abhijat in #8649
feat(aof): chain reader Repair by @kostasrim in #8666
refactor(server): simplify WAIT acknowledgement tracking by @romange in #8668
refactor(acl): expose a pure CheckCommand over an AclRulesView by @romange in #8684
Cover JSON, streams and sketches in DEBUG OBJHIST by @romange in #8656
fix(server): don't exit on cloud snapshot storage init failure at runtime by @dranikpg in #8689
chore(search): Simplify tx concluding by @abhijat in #8691
chore(server): Use lookup mode enum instead of one named after stats by @abhijat in #8688
chore(search): Allow alter, drop via index alias by @abhijat in #8683
refactor(acl): decouple User and UserRegistry from AclFamily's category tables by @romange in #8685
fix(search): keep FT.SYNUPDATE replayed during a replica full sync by @vyavdoshenko in #8671
fix(search): shrink the map of kept field values after removals by @vyavdoshenko in #8672
chore(search): Propagate error if index dropped during search by @abhijat in #8702
fix(server): make XINFO and JSON.DEBUG keyed so scripts read them through the transaction by @vyavdoshenko in #8648
fix(server): reply to TIME with bulk strings by @vyavdoshenko in #8712
feat(aof): manifest file by @kostasrim in #8493
chore(server): Refactor duplicate code by @abhijat in #8690
fix(search): keep index definitions with spaces or wide schemas across reloads by @vyavdoshenko in #8696
fix(acl): fail closed on a broken aclfile, validate hashes, save atomically by @vyavdoshenko in #8681
feat: add throttling to slot flushes after migration by @BorysTheDev in #8641
Expose io thread count and max connections per io thread by @romange in #8701
refactor(acl): simplify ACL rule parsing and serialization by @romange in #8686
feat(aof): manifest bootstrap, startup and gc by @kostasrim in #8502
test: disable tiered_storage_test by @BorysTheDev in #8716
refactor: improve GetSlotInfo performance by @BorysTheDev in #8715
feat: cancel save op if loading starts by @BorysTheDev in #8505
refactor(acl): simplify AclFamily connection, ACL file and log handling by @romange in #8687
feat(ci-dashboard): publish private GCS copy by @glevkovich in #8725
chore(ci): remove public ci-tests-dashboard publishing by @glevkovich in #8726
refactor(test): share JSON legacy and modern conformance scenarios by @kostasrim in #8692
feat(server): listen on :: by default on dual-stack hosts by @oleg-milanov in #8682
feat: getslotinfo don't print unowned slots by @BorysTheDev in #8722
fix(tiering): Avoid double counting list node memory in AutoUpdater by @dranikpg in #8732
fix(s3): Socket pacing + socket marks by @dranikpg in #8719
fix(acl): rw commands permission check by @kostasrim in #8721
chore(server): Better name,description for typed memory metric by @abhijat in #8730
fix(tiering): fix small-bins leak and stash-cancellation on failure by @dranikpg in #8636
fix(server): Skip forced snapshot serialization for redundant writes with second replica, add support for expire by @dranikpg in #8112
feat(tiering): Tiered bin-bucket defragmentation by @dranikpg in #8007
fix(ci-dashboard): add private repo links by @glevkovich in #8640
feat(aof): segment rotation and spare by @kostasrim in #8508
chore(tests): Apply more checks in test multi pubsub by @abhijat in #8728
feat: allow listpack usage during borrow mode for HNSW by @BorysTheDev in #8733
chore(search): Only collect vector range nodes once by @abhijat in #8736
feat: flush slots for all databases by @BorysTheDev in #8669
refactor: MRMW mutex for HNSW index by @BorysTheDev in #8737
chore: Switch license to Dragonfly Source Available License (DSAL) by @romange in #8739
fix(tiering): Better tracking of device usage by @dranikpg in #8122
feat(search): store INDEXMISSING, INDEXEMPTY and UNF, align FT.INFO by @vyavdoshenko in #8720
feat(metrics): export snapshot and replica disconnect counters by @romange in #8740

Huge thanks to all the contributors! ❤️

New Contributors

@Tyagiquamar made their first contribution in #8306
@szepeviktor made their first contribution in #8358
@ZainnQureshii made their first contribution in #8383
@miledxz made their first contribution in #8520
@oleg-milanov made their first contribution in #8682

Full Changelog: v2.0.0...v2.1

dragonflydb/dragonfly v2.1 on GitHub