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