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