Merge dependabot/npm_and_yarn/examples/typescript/smtp-client-pool/types/node-20...
[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 ## [3.1.22] - 2024-03-15
11
12 ### Fixed
13
14 - Fix pool event emitter registered callbacks removal at `destroy()`.
15
16 ## [3.1.21] - 2024-02-22
17
18 ### Fixed
19
20 - Fix null exception regression: [#1496](https://github.com/poolifier/poolifier/issues/1496).
21
22 ## [3.1.20] - 2024-02-11
23
24 ### Fixed
25
26 - Ensure `worker_threads` workers are unreferenced at termination.
27
28 ## [3.1.19] - 2024-01-16
29
30 ### Fixed
31
32 - Fix possible null exception at task finishing handling.
33
34 ### Changed
35
36 - Optimize Deque implementation to improve tasks queueing performance.
37
38 ## [3.1.18] - 2024-01-06
39
40 ### Fixed
41
42 - Fix dynamic pool with minimum number of workers set to zero: [#1748](https://github.com/poolifier/poolifier/issues/1748).
43
44 ## [3.1.17] - 2024-01-05
45
46 ### Changed
47
48 - Improve performance by clean up unneeded condition checks on hot code paths.
49
50 ## [3.1.16] - 2024-01-03
51
52 ### Fixed
53
54 - Add missing type to TS type definitions.
55
56 ## [3.1.15] - 2024-01-02
57
58 ### Fixed
59
60 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
61
62 ## [3.1.15-0] - 2024-01-02
63
64 ### Fixed
65
66 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
67
68 ## [3.1.14] - 2024-01-01
69
70 ### Fixed
71
72 - Properly handle dynamic pool with zero minimum size.
73
74 ## [3.1.13] - 2023-12-30
75
76 ### Changed
77
78 - Reduce branching in several hot code paths.
79 - Use faster object cloning implementation.
80
81 ## [3.1.12] - 2023-12-27
82
83 ### Fixed
84
85 - Fix tasks redistribution triggers at pool destroying.
86
87 ### Changed
88
89 - Switch TypeScript module resolution to Node16.
90
91 ## [3.1.12-0] - 2023-12-27
92
93 ### Fixed
94
95 - Fix tasks redistribution triggers at pool destroying.
96
97 ## [3.1.11] - 2023-12-24
98
99 ### Fixed
100
101 - Avoid worker node cross tasks stealing.
102 - Ensure only half the pool worker nodes can steal tasks.
103
104 ## [3.1.10] - 2023-12-23
105
106 ### Changed
107
108 - Avoid useless branching on pool type.
109
110 ## [3.1.9] - 2023-12-22
111
112 ### Changed
113
114 - Readd ThreadPoolOptions and ClusterPoolOptions TS type aliases to PoolOptions.
115
116 ## [3.1.8] - 2023-12-21
117
118 ### Fixed
119
120 - Fix default worker weight computation.
121 - Fix possible null exception at pool destroying.
122
123 ## [3.1.7] - 2023-12-20
124
125 ### Fixed
126
127 - Ensure worker choice strategies implementation wait for worker node readiness: [#1748](https://github.com/poolifier/poolifier/issues/1748).
128
129 ## [3.1.6] - 2023-12-18
130
131 ### Fixed
132
133 - Fix pool destroying with tasks queuing enabled.
134
135 ## [3.1.5] - 2023-12-18
136
137 ### Added
138
139 - Add queued tasks end timeout support to worker node termination.
140
141 ## [3.1.4] - 2023-12-18
142
143 ### Fixed
144
145 - Make more robust the fix for possible null exception at handling task execution response.
146
147 ## [3.1.3] - 2023-12-17
148
149 ### Fixed
150
151 - Fix possible null exception at handling task execution response.
152
153 ## [3.1.2] - 2023-12-17
154
155 ### Fixed
156
157 - Wait for queued tasks to end at worker node termination.
158
159 ## [3.1.1] - 2023-12-16
160
161 ### Fixed
162
163 - Fix pool options TS type definition.
164
165 ## [3.1.0] - 2023-12-16
166
167 ### Changed
168
169 - TypeScript breaking change: merge ThreadPoolOptions and ClusterPoolOptions types into PoolOptions type.
170
171 ## [3.0.14] - 2023-12-13
172
173 ### Fixed
174
175 - Fix possible null exception with worker_threads pools.
176
177 ## [3.0.13] - 2023-12-12
178
179 ### Fixed
180
181 - Ensure worker choice strategy wait for worker nodes readiness.
182
183 ### Changed
184
185 - Remove infinite retries support in worker choice strategy to avoid configuration leading to possible infinite recursion or loop.
186
187 ## [3.0.12] - 2023-12-12
188
189 ### Changed
190
191 - Add infinite retries support in worker choice strategy.
192
193 ## [3.0.11] - 2023-12-11
194
195 ### Fixed
196
197 - Ensure pool asynchronous resource properly track tasks execution.
198
199 ## [3.0.10] - 2023-12-08
200
201 ### Changed
202
203 - Add a fastpath when tasks stealing or redistribution is impossible.
204
205 ## [3.0.9] - 2023-11-26
206
207 ### Fixed
208
209 - Remove all pool events listener at pool destroying.
210 - Remove all worker node events listener at worker node destroying.
211 - Fix worker node event emitter listeners handling memory leak at pool options runtime change.
212
213 ## [3.0.8] - 2023-11-25
214
215 ### Fixed
216
217 - Ensure continuous tasks stealing on idle start at worker node idling.
218
219 ## [3.0.7] - 2023-11-24
220
221 ### Changed
222
223 - Make continuous tasks stealing start at worker node idling.
224
225 ## [3.0.6] - 2023-11-24
226
227 ### Fixed
228
229 - Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
230 - Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.
231
232 ## [3.0.5] - 2023-10-27
233
234 ### Fixed
235
236 - Ensure pool `ready` event can be emitted only once.
237
238 ## [3.0.4] - 2023-10-20
239
240 ### Changed
241
242 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
243 - Use builtin retry mechanism in worker choice strategies instead of custom one.
244
245 ## [3.0.3] - 2023-10-19
246
247 ### Fixed
248
249 - Avoid null exception at sending message to worker.
250 - Avoid null exception at checking worker node readiness.
251
252 ## [3.0.2] - 2023-10-17
253
254 ### Fixed
255
256 - Fix race condition at dynamic worker node task assignment and scheduled removal. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468) and [#1496](https://github.com/poolifier/poolifier/issues/1496).
257
258 ## [3.0.1] - 2023-10-16
259
260 ### Fixed
261
262 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
263
264 ### Changed
265
266 - Switch the worker node eventing code to `EventTarget` API.
267
268 ## [3.0.0] - 2023-10-08
269
270 ### Changed
271
272 - Remove Node.js 16.x.x (EOL) support.
273
274 ## [2.7.5] - 2023-10-03
275
276 ### Changed
277
278 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
279
280 ## [2.7.4] - 2023-09-25
281
282 ### Fixed
283
284 - Fix source maps (bundler issue).
285
286 ## [2.7.3] - 2023-09-24
287
288 ### Changed
289
290 - Convert pool event emitter to event emitter async resource.
291
292 ## [2.7.2] - 2023-09-23
293
294 ### Changed
295
296 - Add source maps to npm package to ease debugging.
297
298 ### Added
299
300 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
301
302 ## [2.7.1] - 2023-09-20
303
304 ### Fixed
305
306 - Ensure worker message listener used one time are removed after usage.
307
308 ## [2.7.0] - 2023-09-19
309
310 ### Fixed
311
312 - Fix task stealing related tasks queue options handling at runtime.
313
314 ### Changed
315
316 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
317
318 ### Added
319
320 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
321 - Stricter worker constructor arguments validation.
322
323 ## [2.6.45] - 2023-09-17
324
325 ### Changed
326
327 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
328
329 ### Added
330
331 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
332 - Add `start()` method to pool API to start the minimum number of workers.
333 - Add `taskStealing` and `tasksStealingOnPressure` to tasks queue options to whether enable task stealing or not and whether enable tasks stealing under back pressure or not.
334 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
335
336 ## [2.6.44] - 2023-09-08
337
338 ### Fixed
339
340 - Use a dedicated PAT to publish on GitHub packages registry.
341
342 ### Added
343
344 - Publish on GitHub packages registry on release.
345
346 ### Changed
347
348 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
349
350 ## [2.6.43] - 2023-09-08
351
352 ### Added
353
354 - Publish on GitHub packages registry on release.
355
356 ### Changed
357
358 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
359
360 ## [2.6.42] - 2023-09-06
361
362 ### Changed
363
364 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
365
366 ## [2.6.41] - 2023-09-03
367
368 ### Changed
369
370 - Optimize worker choice strategies implementation.
371
372 ## [2.6.40] - 2023-09-01
373
374 ### Fixed
375
376 - Do not pre-choose in WRR worker choice strategy to avoid bias.
377 - Avoid array out of bound in worker choice strategies after worker node removal.
378
379 ## [2.6.39] - 2023-08-30
380
381 ### Fixed
382
383 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
384
385 ## [2.6.38] - 2023-08-30
386
387 ### Added
388
389 - Bundle typescript types declaration into one file.
390
391 ### Changed
392
393 - Improve interleaved weighted round robin worker choice strategy implementation.
394
395 ## [2.6.37] - 2023-08-28
396
397 ### Fixed
398
399 - Ensure unused worker usage statistics are deleted at runtime.
400
401 ### Changed
402
403 - Rename worker choice strategy options `choiceRetries` to `retries`.
404 - Avoid unnecessary branching in worker choice strategies.
405
406 ## [2.6.36] - 2023-08-27
407
408 ### Fixed
409
410 - Fix pool `execute()` arguments check.
411
412 ### Changed
413
414 - Make continuous tasks stealing algorithm less aggressive.
415 - Fine tune tasks stealing algorithm under back pressure.
416
417 ## [2.6.35] - 2023-08-25
418
419 ### Fixed
420
421 - Don't account worker usage statistics for tasks that have failed.
422 - Fix pool information runtime and wait time median computation.
423
424 ### Changed
425
426 - Update simple moving average implementation to use a circular buffer.
427 - Update simple moving median implementation to use a circular buffer.
428 - Account for stolen tasks in worker usage statistics and pool information.
429
430 ### Added
431
432 - Continuous tasks stealing algorithm.
433
434 ## [2.6.34] - 2023-08-24
435
436 ### Fixes
437
438 - Avoid cascading tasks stealing under back pressure.
439
440 ### Changed
441
442 - Add fastpath to queued tasks rescheduling.
443
444 ## [2.6.33] - 2023-08-24
445
446 ### Fixed
447
448 - Fix queued tasks rescheduling.
449
450 ### Changed
451
452 - Rename tasks queue options `queueMaxSize` to `size`.
453
454 ### Added
455
456 - Task stealing scheduling algorithm if tasks queueing is enabled.
457
458 ## [2.6.32] - 2023-08-23
459
460 ### Fixed
461
462 - Ensure no task can be executed when the pool is destroyed.
463
464 ### Added
465
466 - Add `queueMaxSize` option to tasks queue options.
467 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
468 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
469
470 ## [2.6.31] - 2023-08-20
471
472 ### Fixed
473
474 - Fix worker choice strategy retries mechanism in some edge cases.
475
476 ### Changed
477
478 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
479 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
480
481 ## [2.6.30] - 2023-08-19
482
483 ### Fixed
484
485 - Ensure pool event `backPressure` is emitted.
486 - Ensure pool event `full` is emitted only once.
487 - Ensure worker node cannot be instantiated without proper arguments.
488
489 ## [2.6.29] - 2023-08-18
490
491 ### Fixed
492
493 - Fix race condition between readiness and task functions worker message handling at startup.
494 - Fix duplicate task function worker usage statistics computation per task function.
495 - Update task function worker usage statistics if and only if there's at least two different task functions.
496 - Fix race condition at task function worker usage executing task computation leading to negative value.
497
498 ### Added
499
500 - 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).
501 - Use back pressure detection in worker choice strategies.
502 - Add worker choice strategies retries mechanism if no worker is eligible.
503
504 ## [2.6.28] - 2023-08-16
505
506 ### Fixed
507
508 - Ensure pool workers are properly initialized.
509
510 ### Added
511
512 - HTTP server pool examples: express-cluster, express-hybrid.
513
514 ### Changed
515
516 - Remove now useless branching in worker hot code path.
517
518 ## [2.6.27] - 2023-08-15
519
520 ### Fixed
521
522 - Add `KillHandler` type definition to exported types.
523
524 ### Added
525
526 - Add `destroy` event to pool API.
527
528 ## [2.6.26] - 2023-08-15
529
530 ### Added
531
532 - Add kill handler to worker options allowing to execute custom code when worker is killed.
533 - Add `listTaskFunctions()` method to pool API.
534 - SMTP client pool example: nodemailer.
535
536 ## [2.6.25] - 2023-08-13
537
538 ### Added
539
540 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
541 - WebSocket server pool examples: ws-cluster, ws-hybrid.
542
543 ## [2.6.24] - 2023-08-12
544
545 ### Added
546
547 - Add array of transferable objects to the `execute()` method arguments.
548 - WebSocket server pool examples: ws-worker_threads.
549
550 ## [2.6.23] - 2023-08-11
551
552 ### Fixed
553
554 - 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.
555
556 ### Added
557
558 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
559 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
560
561 ## [2.6.22] - 2023-08-10
562
563 ### Fixed
564
565 - Add missing `types` field to package.json `exports`.
566
567 ### Changed
568
569 - Structure markdown documentation (PR #811).
570
571 ## [2.6.21] - 2023-08-03
572
573 ### Changed
574
575 - Improve code documentation.
576 - Code refactoring and cleanup for better maintainability and readability.
577
578 ## [2.6.20] - 2023-07-21
579
580 ### Fixed
581
582 - Fix queued tasks redistribution on error task execution starvation.
583 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
584
585 ### Changed
586
587 - Drastically reduce lookups by worker in the worker nodes.
588
589 ## [2.6.19] - 2023-07-20
590
591 ### Added
592
593 - Dedicated internal communication channel for worker_threads pools.
594
595 ## [2.6.18] - 2023-07-19
596
597 ### Changed
598
599 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
600
601 ## [2.6.17] - 2023-07-16
602
603 ### Added
604
605 - Add `listTaskFunctions()` method to worker API.
606
607 ## [2.6.16] - 2023-07-12
608
609 ### Fixed
610
611 - Fix pool startup detection.
612 - Fix worker task functions handling.
613
614 ## [2.6.15] - 2023-07-11
615
616 ### Added
617
618 - Take into account worker node readiness in worker choice strategies.
619
620 ## [2.6.14] - 2023-07-10
621
622 ### Fixed
623
624 - Fix task function statistics tracking.
625
626 ## [2.6.13] - 2023-07-10
627
628 ### Added
629
630 - Add per task function statistics tracking.
631 - Add public methods to manipulate the worker task functions at runtime.
632
633 ## [2.6.12] - 2023-07-09
634
635 ### Fixed
636
637 - Workaround import issue with `node:os` module in node 16.x.x.
638
639 ## [2.6.11] - 2023-07-09
640
641 ### Fixed
642
643 - Fix pool readiness semantic.
644
645 ## [2.6.10] - 2023-07-08
646
647 ### Fixed
648
649 - Ensure workers are not recreated on error at pool startup.
650
651 ### Added
652
653 - Add `ready` and `strategy` fields to pool information.
654 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
655 - Add dynamic pool sizing checks.
656
657 ## [2.6.9] - 2023-07-07
658
659 ### Fixed
660
661 - Recreate the right worker type on uncaught exception.
662
663 ### Added
664
665 - Add minimum and maximum to internal measurement statistics.
666 - Add `runTime` and `waitTime` to pool information.
667 - Check worker inactive time only on dynamic worker.
668
669 ## [2.6.8] - 2023-07-03
670
671 ### Fixed
672
673 - Brown paper bag release to fix version handling in pool information.
674
675 ## [2.6.7] - 2023-07-03
676
677 ### Fixed
678
679 - Ensure worker queued tasks at error are reassigned to other pool workers.
680
681 ### Added
682
683 - Add pool `utilization` ratio to pool information.
684 - Add `version` to pool information.
685 - Add worker information to worker nodes.
686
687 ## [2.6.6] - 2023-07-01
688
689 ### Added
690
691 - Add safe helper `availableParallelism()` to help sizing the pool.
692
693 ### Fixed
694
695 - Ensure message handler is only registered in worker.
696
697 ## [2.6.5] - 2023-06-27
698
699 ### Known issues
700
701 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
702
703 ### Fixed
704
705 - Artificial version bump to 2.6.5 to workaround publication issue.
706 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
707 - Ensure pool event is emitted before task error promise rejection.
708 - Fix queued tasks count computation.
709
710 ### Removed
711
712 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
713
714 ## [2.6.4] - 2023-06-27
715
716 ### Known issues
717
718 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
719
720 ### Fixed
721
722 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
723 - Ensure pool event is emitted before task error promise rejection.
724 - Fix queued tasks count computation.
725
726 ### Removed
727
728 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
729
730 ## [2.6.3] - 2023-06-19
731
732 ### Fixed
733
734 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
735 - Update strategies internals after statistics computation.
736
737 ### Changed
738
739 - Optimize O(1) queue implementation.
740
741 ## [2.6.2] - 2023-06-12
742
743 ### Fixed
744
745 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
746
747 ## [2.6.1] - 2023-06-10
748
749 ### Added
750
751 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
752
753 ### Fixed
754
755 - Fix average statistics computation: ensure failed tasks are not accounted.
756
757 ## [2.6.0] - 2023-06-09
758
759 ### Added
760
761 - Add `LEAST_ELU` worker choice strategy (experimental).
762 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
763
764 ### Changed
765
766 - Refactor pool worker node usage internals.
767 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
768 - Breaking change: pool information `info` property object fields have been renamed.
769
770 ### Fixed
771
772 - Fix wait time accounting.
773 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
774 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
775
776 ## [2.5.4] - 2023-06-07
777
778 ### Added
779
780 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
781
782 ### Changed
783
784 - Compute statistics at the worker level only if needed.
785 - Add `worker_threads` options to thread pool options.
786
787 ### Fixed
788
789 - Make the `LEAST_BUSY` strategy only relies on task runtime.
790
791 ## [2.5.3] - 2023-06-04
792
793 ### Changed
794
795 - Refine pool information content.
796 - Limit pool internals public exposure.
797
798 ## [2.5.2] - 2023-06-02
799
800 ### Added
801
802 - Add `taskError` pool event for task execution error.
803 - Add pool information `info` property to pool.
804 - Emit pool information on `busy` and `full` pool events.
805
806 ## [2.5.1] - 2023-06-01
807
808 ### Added
809
810 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
811 - Add `error` pool event for uncaught worker error.
812
813 ## [2.5.0] - 2023-05-31
814
815 ### Added
816
817 - Switch pool event emitter to `EventEmitterAsyncResource`.
818 - Add tasks wait time accounting in per worker tasks usage.
819 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
820
821 ### Changed
822
823 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
824
825 ## [2.4.14] - 2023-05-09
826
827 ### Fixed
828
829 - Ensure no undefined task runtime can land in the tasks history.
830 - Fix median computation implementation once again.
831
832 ### Added
833
834 - Unit tests for median and queue implementations.
835
836 ## [2.4.13] - 2023-05-08
837
838 ### Fixed
839
840 - Fix worker choice strategy options validation.
841 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
842
843 ## [2.4.12] - 2023-05-06
844
845 ### Added
846
847 - Support multiple task functions per worker.
848 - Add custom worker weights support to worker choice strategies options.
849
850 ### Changed
851
852 - Use O(1) queue implementation for tasks queueing.
853
854 ### Fixed
855
856 - Fix median computation implementation.
857 - Fix fair share worker choice strategy internals update.
858
859 ## [2.4.11] - 2023-04-23
860
861 ### Changed
862
863 - Optimize free worker finding in worker choice strategies.
864
865 ## [2.4.10] - 2023-04-15
866
867 ### Fixed
868
869 - Fix typescript type definition for task function: ensure the input data is optional.
870 - Fix typescript type definition for pool execute(): ensure the input data is optional.
871
872 ## [2.4.9] - 2023-04-15
873
874 ### Added
875
876 - Add tasks queue enablement runtime setter to pool.
877 - Add tasks queue options runtime setter to pool.
878 - Add worker choice strategy options runtime setter to pool.
879
880 ### Changed
881
882 - Remove the tasks queuing experimental status.
883
884 ### Fixed
885
886 - Fix task function type definition and validation.
887 - Fix worker choice strategy options handling.
888
889 ## [2.4.8] - 2023-04-12
890
891 ### Fixed
892
893 - Fix message between main worker and worker type definition for tasks.
894 - Fix code documentation.
895
896 ## [2.4.7] - 2023-04-11
897
898 ### Added
899
900 - Add worker tasks queue options to pool options.
901
902 ### Fixed
903
904 - Fix missing documentation.
905
906 ## [2.4.6] - 2023-04-10
907
908 ### Fixed
909
910 - Ensure one task at a time is executed per worker with tasks queueing enabled.
911 - Properly count worker executing tasks with tasks queueing enabled.
912
913 ## [2.4.5] - 2023-04-09
914
915 ### Added
916
917 - Use monotonic high resolution timer for worker tasks runtime.
918 - Add worker tasks median runtime to statistics.
919 - Add worker tasks queue (experimental).
920
921 ## [2.4.4] - 2023-04-07
922
923 ### Added
924
925 - Add `PoolEvents` enumeration and `PoolEvent` type.
926
927 ### Fixed
928
929 - Destroy worker only on alive check.
930
931 ## [2.4.3] - 2023-04-07
932
933 ### Fixed
934
935 - Fix typedoc generation with inheritance.
936
937 ## [2.4.2] - 2023-04-06
938
939 ### Added
940
941 - Add `full` event to dynamic pool.
942 - Keep worker choice strategy in memory for conditional reuse.
943
944 ### Fixed
945
946 - Fix possible negative worker key at worker removal in worker choice strategies.
947
948 ## [2.4.1] - 2023-04-05
949
950 ### Changed
951
952 - Optimize worker choice strategy for dynamic pool.
953
954 ### Fixed
955
956 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
957
958 ## [2.4.0] - 2023-04-04
959
960 ### Added
961
962 - Add `LESS_BUSY` worker choice strategy.
963
964 ### Changed
965
966 - Optimize worker storage in pool.
967 - Optimize worker alive status check.
968 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
969 - Optimize `LESS_USED` worker choice strategy.
970 - Update benchmark versus external threads pools.
971 - Optimize tasks usage statistics requirements for worker choice strategy.
972
973 ### Fixed
974
975 - Ensure trimmable characters are checked at pool initialization.
976 - Fix message id integer overflow.
977 - Fix pool worker removal in worker choice strategy internals.
978 - Fix package publication with pnpm.
979
980 ## [2.4.0-3] - 2023-04-04
981
982 ### Added
983
984 - Add `LESS_BUSY` worker choice strategy.
985
986 ### Changed
987
988 - Optimize worker storage in pool.
989 - Optimize worker alive status check.
990 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
991 - Optimize `LESS_USED` worker choice strategy.
992 - Update benchmark versus external threads pools.
993
994 ### Fixed
995
996 - Ensure trimmable characters are checked at pool initialization.
997 - Fix message id integer overflow.
998 - Fix pool worker removal in worker choice strategy internals.
999 - Fix package publication with pnpm.
1000
1001 ## [2.4.0-2] - 2023-04-03
1002
1003 ### Added
1004
1005 - Add `LESS_BUSY` worker choice strategy.
1006
1007 ### Changed
1008
1009 - Optimize worker storage in pool.
1010 - Optimize worker alive status check.
1011 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1012 - Optimize `LESS_USED` worker choice strategy.
1013
1014 ### Fixed
1015
1016 - Ensure trimmable characters are checked at pool initialization.
1017 - Fix message id integer overflow.
1018 - Fix pool worker removal in worker choice strategy internals.
1019 - Fix package publication with pnpm.
1020
1021 ## [2.4.0-1] - 2023-04-03
1022
1023 ### Added
1024
1025 - Add `LESS_BUSY` worker choice strategy.
1026
1027 ### Changed
1028
1029 - Optimize worker storage in pool.
1030 - Optimize worker alive status check.
1031 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1032 - Optimize `LESS_USED` worker choice strategy.
1033
1034 ### Fixed
1035
1036 - Ensure trimmable characters are checked at pool initialization.
1037 - Fix message id integer overflow.
1038 - Fix pool worker removal in worker choice strategy internals.
1039
1040 ## [2.4.0-0] - 2023-04-03
1041
1042 ### Added
1043
1044 - Add `LESS_BUSY` worker choice strategy.
1045
1046 ### Changed
1047
1048 - Optimize worker storage in pool.
1049 - Optimize worker alive status check.
1050 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1051 - Optimize `LESS_USED` worker choice strategy.
1052
1053 ### Fixed
1054
1055 - Ensure trimmable characters are checked at pool initialization.
1056 - Fix message id integer overflow.
1057 - Fix pool worker removal in worker choice strategy internals.
1058
1059 ## [2.3.10] - 2023-03-18
1060
1061 ### Fixed
1062
1063 - Fix package.json `exports` syntax for ESM and CommonJS.
1064
1065 ### Changed
1066
1067 - Permit SemVer pre-release publication.
1068
1069 ## [2.3.10-2] - 2023-03-18
1070
1071 ### Fixed
1072
1073 - Fix package.json `exports` syntax for ESM and CommonJS.
1074
1075 ## [2.3.10-1] - 2023-03-18
1076
1077 ### Changed
1078
1079 - Permit SemVer pre-release publication.
1080
1081 ## [2.3.10-0] - 2023-03-18
1082
1083 ### Fixed
1084
1085 - Fix package.json `exports` syntax for ESM and CommonJS.
1086
1087 ## [2.3.9] - 2023-03-18
1088
1089 ### Changed
1090
1091 - Introduce ESM module support along with CommonJS one.
1092
1093 ### Fixed
1094
1095 - Fix brown paper bag bug referencing the same object literal.
1096
1097 ## [2.3.8] - 2023-03-18
1098
1099 ### Changed
1100
1101 - Switch internal benchmarking code to benny.
1102 - Switch to TypeScript 5.x.x.
1103 - Switch rollup bundler plugins to core ones.
1104 - Switch to TSDoc syntax.
1105 - Enforce conventional commits.
1106
1107 ### Fixed
1108
1109 - Fix random integer generator.
1110 - Fix worker choice strategy pool type identification at initialization.
1111
1112 ## [2.3.7] - 2022-10-23
1113
1114 ### Changed
1115
1116 - Switch to open collective FOSS project funding platform.
1117 - Switch to ts-standard linter configuration on TypeScript code.
1118
1119 ### Fixed
1120
1121 - Fixed missing async on pool execute method.
1122 - Fixed typing in TypeScript example.
1123 - Fixed types in unit tests.
1124
1125 ## [2.3.6] - 2022-10-22
1126
1127 ### Changed
1128
1129 - Cleanup pool attributes and methods.
1130 - Refine error types thrown.
1131
1132 ### Fixed
1133
1134 - Fix continuous integration build on windows.
1135 - Fix code coverage reporting by using c8 instead of nyc.
1136
1137 ## [2.3.5] - 2022-10-21
1138
1139 ### Changed
1140
1141 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
1142 - Optimize tasks usage lookup implementation.
1143
1144 ### Fixed
1145
1146 - Fix missed pool event emitter type export.
1147 - Fix typedoc documentation generation.
1148
1149 ## [2.3.4] - 2022-10-17
1150
1151 ### Added
1152
1153 - Fully automate release process with release-it.
1154
1155 ### Changed
1156
1157 - Optimize fair share task scheduling algorithm implementation.
1158 - Update benchmark versus external pools results with latest version.
1159
1160 ## [2.3.3] - 2022-10-15
1161
1162 ### Added
1163
1164 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
1165
1166 ## [2.3.2] - 2022-10-14
1167
1168 ### Changed
1169
1170 - Optimize fair share worker selection strategy implementation.
1171
1172 ### Fixed
1173
1174 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
1175
1176 ## [2.3.1] - 2022-10-13
1177
1178 ### Added
1179
1180 - Pool worker choice strategies:
1181 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
1182 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
1183
1184 ## [2.2.2] - 2022-10-09
1185
1186 ### Fixed
1187
1188 - Fixed `README.md` file.
1189
1190 ## [2.2.1] - 2022-10-08
1191
1192 ### Added
1193
1194 - Dynamic worker choice strategy change at runtime.
1195
1196 ## [2.2.0] - 2022-01-05
1197
1198 ### Breaking Changes
1199
1200 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
1201
1202 ## [2.1.0] - 2021-08-29
1203
1204 ### Added
1205
1206 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
1207
1208 ### Breaking Changes
1209
1210 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
1211 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
1212 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
1213 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
1214
1215 ## [2.0.2] - 2021-05-12
1216
1217 ### Bug fixes
1218
1219 - Fix `busy` event emission on fixed pool type
1220
1221 ## [2.0.1] - 2021-03-16
1222
1223 ### Bug fixes
1224
1225 - Check if pool options are properly set.
1226 - `busy` event is emitted on all pool types.
1227
1228 ## [2.0.0] - 2021-03-01
1229
1230 ### Bug fixes
1231
1232 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1233
1234 ### Breaking Changes
1235
1236 - `FullPool` event is now renamed to `busy`.
1237 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1238 _Find more details on our JSDoc._
1239
1240 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1241
1242 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1243
1244 ### Pool options types declaration merge
1245
1246 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1247
1248 #### New `export` strategy
1249
1250 ```js
1251 // Before
1252 const DynamicThreadPool = require('poolifier/lib/dynamic')
1253 // After
1254 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1255 ```
1256
1257 But you should always prefer just using
1258
1259 ```js
1260 const { DynamicThreadPool } = require('poolifier')
1261 ```
1262
1263 #### New type definitions for input data and response
1264
1265 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1266 _This is not a limitation by poolifier but Node.js._
1267
1268 #### Public property replacements
1269
1270 `numWorkers` property is now `numberOfWorkers`
1271
1272 #### Internal (protected) properties and methods renaming
1273
1274 These properties are not intended for end users
1275
1276 - `id` => `nextMessageId`
1277
1278 These methods are not intended for end users
1279
1280 - `_chooseWorker` => `chooseWorker`
1281 - `_newWorker` => `createWorker`
1282 - `_execute` => `internalExecute`
1283 - `_chooseWorker` => `chooseWorker`
1284 - `_checkAlive` => `checkAlive`
1285 - `_run` => `run`
1286 - `_runAsync` => `runAsync`
1287
1288 ## [1.1.0] - 2020-05-21
1289
1290 ### Added
1291
1292 - ThreadWorker support async functions as option
1293 - Various external library patches
1294
1295 ## [1.0.0] - 2020-01-24
1296
1297 ### Added
1298
1299 - FixedThreadPool implementation
1300 - DynamicThreadPool implementation
1301 - WorkerThread implementation to improve developer experience