CHANGELOG.md

   1 # Changelog
   2
   3 All notable changes to this project will be documented in this file.
   4
   5 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
   6 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   7
   8 ## [Unreleased]
   9
  10 ### Changed
  11
  12 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
  13
  14 ### Added
  15
  16 - Continuous internal benchmarking.
  17
  18 ## [2.6.44] - 2023-09-08
  19
  20 ### Fixed
  21
  22 - Use a dedicated PAT to publish on GitHub packages registry.
  23
  24 ### Added
  25
  26 - Publish on GitHub packages registry on release.
  27
  28 ### Changed
  29
  30 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
  31
  32 ## [2.6.43] - 2023-09-08
  33
  34 ### Added
  35
  36 - Publish on GitHub packages registry on release.
  37
  38 ### Changed
  39
  40 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
  41
  42 ## [2.6.42] - 2023-09-06
  43
  44 ### Changed
  45
  46 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
  47
  48 ## [2.6.41] - 2023-09-03
  49
  50 ### Changed
  51
  52 - Optimize worker choice strategies implementation.
  53
  54 ## [2.6.40] - 2023-09-01
  55
  56 ### Fixed
  57
  58 - Do not pre-choose in WRR worker choice strategy to avoid bias.
  59 - Avoid array out of bound in worker choice strategies after worker node removal.
  60
  61 ## [2.6.39] - 2023-08-30
  62
  63 ### Fixed
  64
  65 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
  66
  67 ## [2.6.38] - 2023-08-30
  68
  69 ### Added
  70
  71 - Bundle typescript types declaration into one file.
  72
  73 ### Changed
  74
  75 - Improve interleaved weighted round robin worker choice strategy implementation.
  76
  77 ## [2.6.37] - 2023-08-28
  78
  79 ### Fixed
  80
  81 - Ensure unused worker usage statistics are deleted at runtime.
  82
  83 ### Changed
  84
  85 - Rename worker choice strategy options `choiceRetries` to `retries`.
  86 - Avoid unnecessary branching in worker choice strategies.
  87
  88 ## [2.6.36] - 2023-08-27
  89
  90 ### Fixed
  91
  92 - Fix pool `execute()` arguments check.
  93
  94 ### Changed
  95
  96 - Make continuous tasks stealing algorithm less aggressive.
  97 - Fine tune tasks stealing algorithm under back pressure.
  98
  99 ## [2.6.35] - 2023-08-25
 100
 101 ### Fixed
 102
 103 - Don't account worker usage statistics for tasks that have failed.
 104 - Fix pool information runtime and wait time median computation.
 105
 106 ### Changed
 107
 108 - Update simple moving average implementation to use a circular buffer.
 109 - Update simple moving median implementation to use a circular buffer.
 110 - Account for stolen tasks in worker usage statistics and pool information.
 111
 112 ### Added
 113
 114 - Continuous tasks stealing algorithm.
 115
 116 ## [2.6.34] - 2023-08-24
 117
 118 ### Fixes
 119
 120 - Avoid cascading tasks stealing under back pressure.
 121
 122 ### Changed
 123
 124 - Add fastpath to queued tasks rescheduling.
 125
 126 ## [2.6.33] - 2023-08-24
 127
 128 ### Fixed
 129
 130 - Fix queued tasks rescheduling.
 131
 132 ### Changed
 133
 134 - Rename tasks queue options `queueMaxSize` to `size`.
 135
 136 ### Added
 137
 138 - Task stealing scheduling algorithm if tasks queueing is enabled.
 139
 140 ## [2.6.32] - 2023-08-23
 141
 142 ### Fixed
 143
 144 - Ensure no task can be executed when the pool is destroyed.
 145
 146 ### Added
 147
 148 - Add `queueMaxSize` option to tasks queue options.
 149 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
 150 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
 151
 152 ## [2.6.31] - 2023-08-20
 153
 154 ### Fixed
 155
 156 - Fix worker choice strategy retries mechanism in some edge cases.
 157
 158 ### Changed
 159
 160 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
 161 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
 162
 163 ## [2.6.30] - 2023-08-19
 164
 165 ### Fixed
 166
 167 - Ensure pool event `backPressure` is emitted.
 168 - Ensure pool event `full` is emitted only once.
 169 - Ensure worker node cannot be instantiated without proper arguments.
 170
 171 ## [2.6.29] - 2023-08-18
 172
 173 ### Fixed
 174
 175 - Fix race condition between ready and task functions worker message handling at startup.
 176 - Fix duplicate task function worker usage statistics computation per task function.
 177 - Update task function worker usage statistics if and only if there's at least two different task functions.
 178 - Fix race condition at task function worker usage executing task computation leading to negative value.
 179
 180 ### Added
 181
 182 - Add back pressure detection on the worker node queue. Event `backPressure` is emitted when all worker node queues are full (worker node queue size >= poolMaxSize^2).
 183 - Use back pressure detection in worker choice strategies.
 184 - Add worker choice strategies retries mechanism if no worker is eligible.
 185
 186 ## [2.6.28] - 2023-08-16
 187
 188 ### Fixed
 189
 190 - Ensure pool workers are properly initialized.
 191
 192 ### Added
 193
 194 - HTTP server pool examples: express-cluster, express-hybrid.
 195
 196 ### Changed
 197
 198 - Remove now useless branching in worker hot code path.
 199
 200 ## [2.6.27] - 2023-08-15
 201
 202 ### Fixed
 203
 204 - Add `KillHandler` type definition to exported types.
 205
 206 ### Added
 207
 208 - Add `destroy` event to pool API.
 209
 210 ## [2.6.26] - 2023-08-15
 211
 212 ### Added
 213
 214 - Add kill handler to worker options allowing to execute custom code when worker is killed.
 215 - Add `listTaskFunctions()` method to pool API.
 216 - SMTP client pool example: nodemailer.
 217
 218 ## [2.6.25] - 2023-08-13
 219
 220 ### Added
 221
 222 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
 223 - WebSocket server pool examples: ws-cluster, ws-hybrid.
 224
 225 ## [2.6.24] - 2023-08-12
 226
 227 ### Added
 228
 229 - Add array of transferable objects to the `execute()` method arguments.
 230 - WebSocket server pool examples: ws-worker_threads.
 231
 232 ## [2.6.23] - 2023-08-11
 233
 234 ### Fixed
 235
 236 - Fix pool busyness semantic when tasks queueing is enabled: the pool is busy when the number of executing tasks on each worker has reached the maximum tasks concurrency per worker.
 237
 238 ### Added
 239
 240 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
 241 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
 242
 243 ## [2.6.22] - 2023-08-10
 244
 245 ### Fixed
 246
 247 - Add missing `types` field to package.json `exports`.
 248
 249 ### Changed
 250
 251 - Structure markdown documentation (PR #811).
 252
 253 ## [2.6.21] - 2023-08-03
 254
 255 ### Changed
 256
 257 - Improve code documentation.
 258 - Code refactoring and cleanup for better maintainability and readability.
 259
 260 ## [2.6.20] - 2023-07-21
 261
 262 ### Fixed
 263
 264 - Fix queued tasks redistribution on error task execution starvation.
 265 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
 266
 267 ### Changed
 268
 269 - Drastically reduce lookups by worker in the worker nodes.
 270
 271 ## [2.6.19] - 2023-07-20
 272
 273 ### Added
 274
 275 - Dedicated internal communication channel for worker_threads pools.
 276
 277 ## [2.6.18] - 2023-07-19
 278
 279 ### Changed
 280
 281 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
 282
 283 ## [2.6.17] - 2023-07-16
 284
 285 ### Added
 286
 287 - Add `listTaskFunctions()` method to worker API.
 288
 289 ## [2.6.16] - 2023-07-12
 290
 291 ### Fixed
 292
 293 - Fix pool startup detection.
 294 - Fix worker task functions handling.
 295
 296 ## [2.6.15] - 2023-07-11
 297
 298 ### Added
 299
 300 - Take into account worker node readiness in worker choice strategies.
 301
 302 ## [2.6.14] - 2023-07-10
 303
 304 ### Fixed
 305
 306 - Fix task function statistics tracking.
 307
 308 ## [2.6.13] - 2023-07-10
 309
 310 ### Added
 311
 312 - Add per task function statistics tracking.
 313 - Add public methods to manipulate the worker task functions at runtime.
 314
 315 ## [2.6.12] - 2023-07-09
 316
 317 ### Fixed
 318
 319 - Workaround import issue with `node:os` module in node 16.x.x.
 320
 321 ## [2.6.11] - 2023-07-09
 322
 323 ### Fixed
 324
 325 - Fix pool readiness semantic.
 326
 327 ## [2.6.10] - 2023-07-08
 328
 329 ### Fixed
 330
 331 - Ensure workers are not recreated on error at pool startup.
 332
 333 ### Added
 334
 335 - Add `ready` and `strategy` fields to pool information.
 336 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
 337 - Add dynamic pool sizing checks.
 338
 339 ## [2.6.9] - 2023-07-07
 340
 341 ### Fixed
 342
 343 - Recreate the right worker type on uncaught exception.
 344
 345 ### Added
 346
 347 - Add minimum and maximum to internal measurement statistics.
 348 - Add `runTime` and `waitTime` to pool information.
 349 - Check worker inactive time only on dynamic worker.
 350
 351 ## [2.6.8] - 2023-07-03
 352
 353 ### Fixed
 354
 355 - Brown paper bag release to fix version handling in pool information.
 356
 357 ## [2.6.7] - 2023-07-03
 358
 359 ### Fixed
 360
 361 - Ensure worker queued tasks at error are reassigned to other pool workers.
 362
 363 ### Added
 364
 365 - Add pool `utilization` ratio to pool information.
 366 - Add `version` to pool information.
 367 - Add worker information to worker nodes.
 368
 369 ## [2.6.6] - 2023-07-01
 370
 371 ### Added
 372
 373 - Add safe helper `availableParallelism()` to help sizing the pool.
 374
 375 ### Fixed
 376
 377 - Ensure message handler is only registered in worker.
 378
 379 ## [2.6.5] - 2023-06-27
 380
 381 ### Known issues
 382
 383 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
 384
 385 ### Fixed
 386
 387 - Artificial version bump to 2.6.5 to workaround publication issue.
 388 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
 389 - Ensure pool event is emitted before task error promise rejection.
 390 - Fix queued tasks count computation.
 391
 392 ### Removed
 393
 394 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
 395
 396 ## [2.6.4] - 2023-06-27
 397
 398 ### Known issues
 399
 400 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
 401
 402 ### Fixed
 403
 404 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
 405 - Ensure pool event is emitted before task error promise rejection.
 406 - Fix queued tasks count computation.
 407
 408 ### Removed
 409
 410 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
 411
 412 ## [2.6.3] - 2023-06-19
 413
 414 ### Fixed
 415
 416 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
 417 - Update strategies internals after statistics computation.
 418
 419 ### Changed
 420
 421 - Optimize O(1) queue implementation.
 422
 423 ## [2.6.2] - 2023-06-12
 424
 425 ### Fixed
 426
 427 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
 428
 429 ## [2.6.1] - 2023-06-10
 430
 431 ### Added
 432
 433 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
 434
 435 ### Fixed
 436
 437 - Fix average statistics computation: ensure failed tasks are not accounted.
 438
 439 ## [2.6.0] - 2023-06-09
 440
 441 ### Added
 442
 443 - Add `LEAST_ELU` worker choice strategy (experimental).
 444 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
 445
 446 ### Changed
 447
 448 - Refactor pool worker node usage internals.
 449 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
 450 - Breaking change: pool information `info` property object fields have been renamed.
 451
 452 ### Fixed
 453
 454 - Fix wait time accounting.
 455 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
 456 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
 457
 458 ## [2.5.4] - 2023-06-07
 459
 460 ### Added
 461
 462 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
 463
 464 ### Changed
 465
 466 - Compute statistics at the worker level only if needed.
 467 - Add `worker_threads` options to thread pool options.
 468
 469 ### Fixed
 470
 471 - Make the `LEAST_BUSY` strategy only relies on task runtime.
 472
 473 ## [2.5.3] - 2023-06-04
 474
 475 ### Changed
 476
 477 - Refine pool information content.
 478 - Limit pool internals public exposure.
 479
 480 ## [2.5.2] - 2023-06-02
 481
 482 ### Added
 483
 484 - Add `taskError` pool event for task execution error.
 485 - Add pool information `info` property to pool.
 486 - Emit pool information on `busy` and `full` pool events.
 487
 488 ## [2.5.1] - 2023-06-01
 489
 490 ### Added
 491
 492 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
 493 - Add `error` pool event for uncaught worker error.
 494
 495 ## [2.5.0] - 2023-05-31
 496
 497 ### Added
 498
 499 - Switch pool event emitter to `EventEmitterAsyncResource`.
 500 - Add tasks wait time accounting in per worker tasks usage.
 501 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
 502
 503 ### Changed
 504
 505 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
 506
 507 ## [2.4.14] - 2023-05-09
 508
 509 ### Fixed
 510
 511 - Ensure no undefined task runtime can land in the tasks history.
 512 - Fix median computation implementation once again.
 513
 514 ### Added
 515
 516 - Unit tests for median and queue implementations.
 517
 518 ## [2.4.13] - 2023-05-08
 519
 520 ### Fixed
 521
 522 - Fix worker choice strategy options validation.
 523 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
 524
 525 ## [2.4.12] - 2023-05-06
 526
 527 ### Added
 528
 529 - Support multiple task functions per worker.
 530 - Add custom worker weights support to worker choice strategies options.
 531
 532 ### Changed
 533
 534 - Use O(1) queue implementation for tasks queueing.
 535
 536 ### Fixed
 537
 538 - Fix median computation implementation.
 539 - Fix fair share worker choice strategy internals update.
 540
 541 ## [2.4.11] - 2023-04-23
 542
 543 ### Changed
 544
 545 - Optimize free worker finding in worker choice strategies.
 546
 547 ## [2.4.10] - 2023-04-15
 548
 549 ### Fixed
 550
 551 - Fix typescript type definition for task function: ensure the input data is optional.
 552 - Fix typescript type definition for pool execute(): ensure the input data is optional.
 553
 554 ## [2.4.9] - 2023-04-15
 555
 556 ### Added
 557
 558 - Add tasks queue enablement runtime setter to pool.
 559 - Add tasks queue options runtime setter to pool.
 560 - Add worker choice strategy options runtime setter to pool.
 561
 562 ### Changed
 563
 564 - Remove the tasks queuing experimental status.
 565
 566 ### Fixed
 567
 568 - Fix task function type definition and validation.
 569 - Fix worker choice strategy options handling.
 570
 571 ## [2.4.8] - 2023-04-12
 572
 573 ### Fixed
 574
 575 - Fix message between main worker and worker type definition for tasks.
 576 - Fix code documentation.
 577
 578 ## [2.4.7] - 2023-04-11
 579
 580 ### Added
 581
 582 - Add worker tasks queue options to pool options.
 583
 584 ### Fixed
 585
 586 - Fix missing documentation.
 587
 588 ## [2.4.6] - 2023-04-10
 589
 590 ### Fixed
 591
 592 - Ensure one task at a time is executed per worker with tasks queueing enabled.
 593 - Properly count worker executing tasks with tasks queueing enabled.
 594
 595 ## [2.4.5] - 2023-04-09
 596
 597 ### Added
 598
 599 - Use monotonic high resolution timer for worker tasks runtime.
 600 - Add worker tasks median runtime to statistics.
 601 - Add worker tasks queue (experimental).
 602
 603 ## [2.4.4] - 2023-04-07
 604
 605 ### Added
 606
 607 - Add `PoolEvents` enumeration and `PoolEvent` type.
 608
 609 ### Fixed
 610
 611 - Destroy worker only on alive check.
 612
 613 ## [2.4.3] - 2023-04-07
 614
 615 ### Fixed
 616
 617 - Fix typedoc generation with inheritance.
 618
 619 ## [2.4.2] - 2023-04-06
 620
 621 ### Added
 622
 623 - Add `full` event to dynamic pool.
 624 - Keep worker choice strategy in memory for conditional reuse.
 625
 626 ### Fixed
 627
 628 - Fix possible negative worker key at worker removal in worker choice strategies.
 629
 630 ## [2.4.1] - 2023-04-05
 631
 632 ### Changed
 633
 634 - Optimize worker choice strategy for dynamic pool.
 635
 636 ### Fixed
 637
 638 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
 639
 640 ## [2.4.0] - 2023-04-04
 641
 642 ### Added
 643
 644 - Add `LESS_BUSY` worker choice strategy.
 645
 646 ### Changed
 647
 648 - Optimize worker storage in pool.
 649 - Optimize worker alive status check.
 650 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 651 - Optimize `LESS_USED` worker choice strategy.
 652 - Update benchmarks versus external threads pools.
 653 - Optimize tasks usage statistics requirements for worker choice strategy.
 654
 655 ### Fixed
 656
 657 - Ensure trimmable characters are checked at pool initialization.
 658 - Fix message id integer overflow.
 659 - Fix pool worker removal in worker choice strategy internals.
 660 - Fix package publication with pnpm.
 661
 662 ## [2.4.0-3] - 2023-04-04
 663
 664 ### Added
 665
 666 - Add `LESS_BUSY` worker choice strategy.
 667
 668 ### Changed
 669
 670 - Optimize worker storage in pool.
 671 - Optimize worker alive status check.
 672 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 673 - Optimize `LESS_USED` worker choice strategy.
 674 - Update benchmarks versus external threads pools.
 675
 676 ### Fixed
 677
 678 - Ensure trimmable characters are checked at pool initialization.
 679 - Fix message id integer overflow.
 680 - Fix pool worker removal in worker choice strategy internals.
 681 - Fix package publication with pnpm.
 682
 683 ## [2.4.0-2] - 2023-04-03
 684
 685 ### Added
 686
 687 - Add `LESS_BUSY` worker choice strategy.
 688
 689 ### Changed
 690
 691 - Optimize worker storage in pool.
 692 - Optimize worker alive status check.
 693 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 694 - Optimize `LESS_USED` worker choice strategy.
 695
 696 ### Fixed
 697
 698 - Ensure trimmable characters are checked at pool initialization.
 699 - Fix message id integer overflow.
 700 - Fix pool worker removal in worker choice strategy internals.
 701 - Fix package publication with pnpm.
 702
 703 ## [2.4.0-1] - 2023-04-03
 704
 705 ### Added
 706
 707 - Add `LESS_BUSY` worker choice strategy.
 708
 709 ### Changed
 710
 711 - Optimize worker storage in pool.
 712 - Optimize worker alive status check.
 713 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 714 - Optimize `LESS_USED` worker choice strategy.
 715
 716 ### Fixed
 717
 718 - Ensure trimmable characters are checked at pool initialization.
 719 - Fix message id integer overflow.
 720 - Fix pool worker removal in worker choice strategy internals.
 721
 722 ## [2.4.0-0] - 2023-04-03
 723
 724 ### Added
 725
 726 - Add `LESS_BUSY` worker choice strategy.
 727
 728 ### Changed
 729
 730 - Optimize worker storage in pool.
 731 - Optimize worker alive status check.
 732 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 733 - Optimize `LESS_USED` worker choice strategy.
 734
 735 ### Fixed
 736
 737 - Ensure trimmable characters are checked at pool initialization.
 738 - Fix message id integer overflow.
 739 - Fix pool worker removal in worker choice strategy internals.
 740
 741 ## [2.3.10] - 2023-03-18
 742
 743 ### Fixed
 744
 745 - Fix package.json `exports` syntax for ESM and CommonJS.
 746
 747 ### Changed
 748
 749 - Permit SemVer pre-release publication.
 750
 751 ## [2.3.10-2] - 2023-03-18
 752
 753 ### Fixed
 754
 755 - Fix package.json `exports` syntax for ESM and CommonJS.
 756
 757 ## [2.3.10-1] - 2023-03-18
 758
 759 ### Changed
 760
 761 - Permit SemVer pre-release publication.
 762
 763 ## [2.3.10-0] - 2023-03-18
 764
 765 ### Fixed
 766
 767 - Fix package.json `exports` syntax for ESM and CommonJS.
 768
 769 ## [2.3.9] - 2023-03-18
 770
 771 ### Changed
 772
 773 - Introduce ESM module support along with CommonJS one.
 774
 775 ### Fixed
 776
 777 - Fix brown paper bag bug referencing the same object literal.
 778
 779 ## [2.3.8] - 2023-03-18
 780
 781 ### Changed
 782
 783 - Switch internal benchmarking code to benny.
 784 - Switch to TypeScript 5.x.x.
 785 - Switch rollup bundler plugins to core ones.
 786 - Switch to TSDoc syntax.
 787 - Enforce conventional commits.
 788
 789 ### Fixed
 790
 791 - Fix random integer generator.
 792 - Fix worker choice strategy pool type identification at initialization.
 793
 794 ## [2.3.7] - 2022-10-23
 795
 796 ### Changed
 797
 798 - Switch to open collective FOSS project funding platform.
 799 - Switch to ts-standard linter configuration on TypeScript code.
 800
 801 ### Fixed
 802
 803 - Fixed missing async on pool execute method.
 804 - Fixed typing in TypeScript example.
 805 - Fixed types in unit tests.
 806
 807 ## [2.3.6] - 2022-10-22
 808
 809 ### Changed
 810
 811 - Cleanup pool attributes and methods.
 812 - Refine error types thrown.
 813
 814 ### Fixed
 815
 816 - Fix continuous integration build on windows.
 817 - Fix code coverage reporting by using c8 instead of nyc.
 818
 819 ## [2.3.5] - 2022-10-21
 820
 821 ### Changed
 822
 823 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
 824 - Optimize tasks usage lookup implementation.
 825
 826 ### Fixed
 827
 828 - Fix missed pool event emitter type export.
 829 - Fix typedoc documentation generation.
 830
 831 ## [2.3.4] - 2022-10-17
 832
 833 ### Added
 834
 835 - Fully automate release process with release-it.
 836
 837 ### Changed
 838
 839 - Optimize fair share task scheduling algorithm implementation.
 840 - Update benchmarks versus external pools results with latest version.
 841
 842 ## [2.3.3] - 2022-10-15
 843
 844 ### Added
 845
 846 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
 847
 848 ## [2.3.2] - 2022-10-14
 849
 850 ### Changed
 851
 852 - Optimize fair share worker selection strategy implementation.
 853
 854 ### Fixed
 855
 856 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
 857
 858 ## [2.3.1] - 2022-10-13
 859
 860 ### Added
 861
 862 - Pool worker choice strategies:
 863   - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
 864   - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
 865
 866 ## [2.2.2] - 2022-10-09
 867
 868 ### Fixed
 869
 870 - Fixed `README.md` file.
 871
 872 ## [2.2.1] - 2022-10-08
 873
 874 ### Added
 875
 876 - Dynamic worker choice strategy change at runtime.
 877
 878 ## [2.2.0] - 2022-01-05
 879
 880 ### Breaking Changes
 881
 882 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
 883
 884 ## [2.1.0] - 2021-08-29
 885
 886 ### Added
 887
 888 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
 889
 890 ### Breaking Changes
 891
 892 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
 893 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
 894 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
 895 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
 896
 897 ## [2.0.2] - 2021-05-12
 898
 899 ### Bug fixes
 900
 901 - Fix `busy` event emission on fixed pool type
 902
 903 ## [2.0.1] - 2021-03-16
 904
 905 ### Bug fixes
 906
 907 - Check if pool options are properly set.
 908 - `busy` event is emitted on all pool types.
 909
 910 ## [2.0.0] - 2021-03-01
 911
 912 ### Bug fixes
 913
 914 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
 915
 916 ### Breaking Changes
 917
 918 - `FullPool` event is now renamed to `busy`.
 919 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
 920   _Find more details on our JSDoc._
 921
 922 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
 923
 924 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
 925
 926 ### Pool options types declaration merge
 927
 928 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
 929
 930 #### New `export` strategy
 931
 932 ```js
 933 // Before
 934 const DynamicThreadPool = require('poolifier/lib/dynamic')
 935 // After
 936 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
 937 ```
 938
 939 But you should always prefer just using
 940
 941 ```js
 942 const { DynamicThreadPool } = require('poolifier')
 943 ```
 944
 945 #### New type definitions for input data and response
 946
 947 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
 948 _This is not a limitation by poolifier but Node.js._
 949
 950 #### Public property replacements
 951
 952 `numWorkers` property is now `numberOfWorkers`
 953
 954 #### Internal (protected) properties and methods renaming
 955
 956 These properties are not intended for end users
 957
 958 - `id` => `nextMessageId`
 959
 960 These methods are not intended for end users
 961
 962 - `_chooseWorker` => `chooseWorker`
 963 - `_newWorker` => `createWorker`
 964 - `_execute` => `internalExecute`
 965 - `_chooseWorker` => `chooseWorker`
 966 - `_checkAlive` => `checkAlive`
 967 - `_run` => `run`
 968 - `_runAsync` => `runAsync`
 969
 970 ## [1.1.0] - 2020-05-21
 971
 972 ### Added
 973
 974 - ThreadWorker support async functions as option
 975 - Various external library patches
 976
 977 ## [1.0.0] - 2020-01-24
 978
 979 ### Added
 980
 981 - FixedThreadPool implementation
 982 - DynamicThreadPool implementation
 983 - WorkerThread implementation to improve developer experience