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