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