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