3 All notable changes to this project will be documented in this file.
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).
10 ## [3.1.15] - 2024-01-02
14 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
16 ## [3.1.15-0] - 2024-01-02
20 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
22 ## [3.1.14] - 2024-01-01
26 - Properly handle dynamic pool with zero minimum size.
28 ## [3.1.13] - 2023-12-30
32 - Reduce branching in several hot code paths.
33 - Use faster object cloning implementation.
35 ## [3.1.12] - 2023-12-27
39 - Fix tasks redistribution triggers at pool destroying.
43 - Switch TypeScript module resolution to Node16.
45 ## [3.1.12-0] - 2023-12-27
49 - Fix tasks redistribution triggers at pool destroying.
51 ## [3.1.11] - 2023-12-24
55 - Avoid worker node cross tasks stealing.
56 - Ensure only half the pool worker nodes can steal tasks.
58 ## [3.1.10] - 2023-12-23
62 - Avoid useless branching on pool type.
64 ## [3.1.9] - 2023-12-22
68 - Readd ThreadPoolOptions and ClusterPoolOptions TS type aliases to PoolOptions.
70 ## [3.1.8] - 2023-12-21
74 - Fix default worker weight computation.
75 - Fix possible null exception at pool destroying.
77 ## [3.1.7] - 2023-12-20
81 - Ensure worker choice strategies implementation wait for worker node readiness: [#1748](https://github.com/poolifier/poolifier/issues/1748).
83 ## [3.1.6] - 2023-12-18
87 - Fix pool destroying with tasks queuing enabled.
89 ## [3.1.5] - 2023-12-18
93 - Add queued tasks end timeout support to worker node termination.
95 ## [3.1.4] - 2023-12-18
99 - Make more robust the fix for possible null exception at handling task execution response.
101 ## [3.1.3] - 2023-12-17
105 - Fix possible null exception at handling task execution response.
107 ## [3.1.2] - 2023-12-17
111 - Wait for queued tasks to end at worker node termination.
113 ## [3.1.1] - 2023-12-16
117 - Fix pool options TS type definition.
119 ## [3.1.0] - 2023-12-16
123 - TypeScript breaking change: merge ThreadPoolOptions and ClusterPoolOptions types into PoolOptions type.
125 ## [3.0.14] - 2023-12-13
129 - Fix possible null exception with worker_threads pools.
131 ## [3.0.13] - 2023-12-12
135 - Ensure worker choice strategy wait for worker nodes readiness.
139 - Remove infinite retries support in worker choice strategy to avoid configuration leading to possible infinite recursion or loop.
141 ## [3.0.12] - 2023-12-12
145 - Add infinite retries support in worker choice strategy.
147 ## [3.0.11] - 2023-12-11
151 - Ensure pool asynchronous resource properly track tasks execution.
153 ## [3.0.10] - 2023-12-08
157 - Add a fastpath when tasks stealing or redistribution is impossible.
159 ## [3.0.9] - 2023-11-26
163 - Remove all pool events listener at pool destroying.
164 - Remove all worker node events listener at worker node destroying.
165 - Fix worker node event emitter listeners handling memory leak at pool options runtime change.
167 ## [3.0.8] - 2023-11-25
171 - Ensure continuous tasks stealing on idle start at worker node idling.
173 ## [3.0.7] - 2023-11-24
177 - Make continuous tasks stealing start at worker node idling.
179 ## [3.0.6] - 2023-11-24
183 - Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
184 - Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.
186 ## [3.0.5] - 2023-10-27
190 - Ensure pool `ready` event can be emitted only once.
192 ## [3.0.4] - 2023-10-20
196 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
197 - Use builtin retry mechanism in worker choice strategies instead of custom one.
199 ## [3.0.3] - 2023-10-19
203 - Avoid null exception at sending message to worker.
204 - Avoid null exception at checking worker node readiness.
206 ## [3.0.2] - 2023-10-17
210 - 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).
212 ## [3.0.1] - 2023-10-16
216 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
220 - Switch the worker node eventing code to `EventTarget` API.
222 ## [3.0.0] - 2023-10-08
226 - Remove Node.js 16.x.x (EOL) support.
228 ## [2.7.5] - 2023-10-03
232 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
234 ## [2.7.4] - 2023-09-25
238 - Fix source maps (bundler issue).
240 ## [2.7.3] - 2023-09-24
244 - Convert pool event emitter to event emitter async resource.
246 ## [2.7.2] - 2023-09-23
250 - Add source maps to npm package to ease debugging.
254 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
256 ## [2.7.1] - 2023-09-20
260 - Ensure worker message listener used one time are removed after usage.
262 ## [2.7.0] - 2023-09-19
266 - Fix task stealing related tasks queue options handling at runtime.
270 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
274 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
275 - Stricter worker constructor arguments validation.
277 ## [2.6.45] - 2023-09-17
281 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
285 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
286 - Add `start()` method to pool API to start the minimum number of workers.
287 - 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.
288 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
290 ## [2.6.44] - 2023-09-08
294 - Use a dedicated PAT to publish on GitHub packages registry.
298 - Publish on GitHub packages registry on release.
302 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
304 ## [2.6.43] - 2023-09-08
308 - Publish on GitHub packages registry on release.
312 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
314 ## [2.6.42] - 2023-09-06
318 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
320 ## [2.6.41] - 2023-09-03
324 - Optimize worker choice strategies implementation.
326 ## [2.6.40] - 2023-09-01
330 - Do not pre-choose in WRR worker choice strategy to avoid bias.
331 - Avoid array out of bound in worker choice strategies after worker node removal.
333 ## [2.6.39] - 2023-08-30
337 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
339 ## [2.6.38] - 2023-08-30
343 - Bundle typescript types declaration into one file.
347 - Improve interleaved weighted round robin worker choice strategy implementation.
349 ## [2.6.37] - 2023-08-28
353 - Ensure unused worker usage statistics are deleted at runtime.
357 - Rename worker choice strategy options `choiceRetries` to `retries`.
358 - Avoid unnecessary branching in worker choice strategies.
360 ## [2.6.36] - 2023-08-27
364 - Fix pool `execute()` arguments check.
368 - Make continuous tasks stealing algorithm less aggressive.
369 - Fine tune tasks stealing algorithm under back pressure.
371 ## [2.6.35] - 2023-08-25
375 - Don't account worker usage statistics for tasks that have failed.
376 - Fix pool information runtime and wait time median computation.
380 - Update simple moving average implementation to use a circular buffer.
381 - Update simple moving median implementation to use a circular buffer.
382 - Account for stolen tasks in worker usage statistics and pool information.
386 - Continuous tasks stealing algorithm.
388 ## [2.6.34] - 2023-08-24
392 - Avoid cascading tasks stealing under back pressure.
396 - Add fastpath to queued tasks rescheduling.
398 ## [2.6.33] - 2023-08-24
402 - Fix queued tasks rescheduling.
406 - Rename tasks queue options `queueMaxSize` to `size`.
410 - Task stealing scheduling algorithm if tasks queueing is enabled.
412 ## [2.6.32] - 2023-08-23
416 - Ensure no task can be executed when the pool is destroyed.
420 - Add `queueMaxSize` option to tasks queue options.
421 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
422 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
424 ## [2.6.31] - 2023-08-20
428 - Fix worker choice strategy retries mechanism in some edge cases.
432 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
433 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
435 ## [2.6.30] - 2023-08-19
439 - Ensure pool event `backPressure` is emitted.
440 - Ensure pool event `full` is emitted only once.
441 - Ensure worker node cannot be instantiated without proper arguments.
443 ## [2.6.29] - 2023-08-18
447 - Fix race condition between readiness and task functions worker message handling at startup.
448 - Fix duplicate task function worker usage statistics computation per task function.
449 - Update task function worker usage statistics if and only if there's at least two different task functions.
450 - Fix race condition at task function worker usage executing task computation leading to negative value.
454 - 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).
455 - Use back pressure detection in worker choice strategies.
456 - Add worker choice strategies retries mechanism if no worker is eligible.
458 ## [2.6.28] - 2023-08-16
462 - Ensure pool workers are properly initialized.
466 - HTTP server pool examples: express-cluster, express-hybrid.
470 - Remove now useless branching in worker hot code path.
472 ## [2.6.27] - 2023-08-15
476 - Add `KillHandler` type definition to exported types.
480 - Add `destroy` event to pool API.
482 ## [2.6.26] - 2023-08-15
486 - Add kill handler to worker options allowing to execute custom code when worker is killed.
487 - Add `listTaskFunctions()` method to pool API.
488 - SMTP client pool example: nodemailer.
490 ## [2.6.25] - 2023-08-13
494 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
495 - WebSocket server pool examples: ws-cluster, ws-hybrid.
497 ## [2.6.24] - 2023-08-12
501 - Add array of transferable objects to the `execute()` method arguments.
502 - WebSocket server pool examples: ws-worker_threads.
504 ## [2.6.23] - 2023-08-11
508 - 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.
512 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
513 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
515 ## [2.6.22] - 2023-08-10
519 - Add missing `types` field to package.json `exports`.
523 - Structure markdown documentation (PR #811).
525 ## [2.6.21] - 2023-08-03
529 - Improve code documentation.
530 - Code refactoring and cleanup for better maintainability and readability.
532 ## [2.6.20] - 2023-07-21
536 - Fix queued tasks redistribution on error task execution starvation.
537 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
541 - Drastically reduce lookups by worker in the worker nodes.
543 ## [2.6.19] - 2023-07-20
547 - Dedicated internal communication channel for worker_threads pools.
549 ## [2.6.18] - 2023-07-19
553 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
555 ## [2.6.17] - 2023-07-16
559 - Add `listTaskFunctions()` method to worker API.
561 ## [2.6.16] - 2023-07-12
565 - Fix pool startup detection.
566 - Fix worker task functions handling.
568 ## [2.6.15] - 2023-07-11
572 - Take into account worker node readiness in worker choice strategies.
574 ## [2.6.14] - 2023-07-10
578 - Fix task function statistics tracking.
580 ## [2.6.13] - 2023-07-10
584 - Add per task function statistics tracking.
585 - Add public methods to manipulate the worker task functions at runtime.
587 ## [2.6.12] - 2023-07-09
591 - Workaround import issue with `node:os` module in node 16.x.x.
593 ## [2.6.11] - 2023-07-09
597 - Fix pool readiness semantic.
599 ## [2.6.10] - 2023-07-08
603 - Ensure workers are not recreated on error at pool startup.
607 - Add `ready` and `strategy` fields to pool information.
608 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
609 - Add dynamic pool sizing checks.
611 ## [2.6.9] - 2023-07-07
615 - Recreate the right worker type on uncaught exception.
619 - Add minimum and maximum to internal measurement statistics.
620 - Add `runTime` and `waitTime` to pool information.
621 - Check worker inactive time only on dynamic worker.
623 ## [2.6.8] - 2023-07-03
627 - Brown paper bag release to fix version handling in pool information.
629 ## [2.6.7] - 2023-07-03
633 - Ensure worker queued tasks at error are reassigned to other pool workers.
637 - Add pool `utilization` ratio to pool information.
638 - Add `version` to pool information.
639 - Add worker information to worker nodes.
641 ## [2.6.6] - 2023-07-01
645 - Add safe helper `availableParallelism()` to help sizing the pool.
649 - Ensure message handler is only registered in worker.
651 ## [2.6.5] - 2023-06-27
655 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
659 - Artificial version bump to 2.6.5 to workaround publication issue.
660 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
661 - Ensure pool event is emitted before task error promise rejection.
662 - Fix queued tasks count computation.
666 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
668 ## [2.6.4] - 2023-06-27
672 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
676 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
677 - Ensure pool event is emitted before task error promise rejection.
678 - Fix queued tasks count computation.
682 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
684 ## [2.6.3] - 2023-06-19
688 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
689 - Update strategies internals after statistics computation.
693 - Optimize O(1) queue implementation.
695 ## [2.6.2] - 2023-06-12
699 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
701 ## [2.6.1] - 2023-06-10
705 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
709 - Fix average statistics computation: ensure failed tasks are not accounted.
711 ## [2.6.0] - 2023-06-09
715 - Add `LEAST_ELU` worker choice strategy (experimental).
716 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
720 - Refactor pool worker node usage internals.
721 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
722 - Breaking change: pool information `info` property object fields have been renamed.
726 - Fix wait time accounting.
727 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
728 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
730 ## [2.5.4] - 2023-06-07
734 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
738 - Compute statistics at the worker level only if needed.
739 - Add `worker_threads` options to thread pool options.
743 - Make the `LEAST_BUSY` strategy only relies on task runtime.
745 ## [2.5.3] - 2023-06-04
749 - Refine pool information content.
750 - Limit pool internals public exposure.
752 ## [2.5.2] - 2023-06-02
756 - Add `taskError` pool event for task execution error.
757 - Add pool information `info` property to pool.
758 - Emit pool information on `busy` and `full` pool events.
760 ## [2.5.1] - 2023-06-01
764 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
765 - Add `error` pool event for uncaught worker error.
767 ## [2.5.0] - 2023-05-31
771 - Switch pool event emitter to `EventEmitterAsyncResource`.
772 - Add tasks wait time accounting in per worker tasks usage.
773 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
777 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
779 ## [2.4.14] - 2023-05-09
783 - Ensure no undefined task runtime can land in the tasks history.
784 - Fix median computation implementation once again.
788 - Unit tests for median and queue implementations.
790 ## [2.4.13] - 2023-05-08
794 - Fix worker choice strategy options validation.
795 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
797 ## [2.4.12] - 2023-05-06
801 - Support multiple task functions per worker.
802 - Add custom worker weights support to worker choice strategies options.
806 - Use O(1) queue implementation for tasks queueing.
810 - Fix median computation implementation.
811 - Fix fair share worker choice strategy internals update.
813 ## [2.4.11] - 2023-04-23
817 - Optimize free worker finding in worker choice strategies.
819 ## [2.4.10] - 2023-04-15
823 - Fix typescript type definition for task function: ensure the input data is optional.
824 - Fix typescript type definition for pool execute(): ensure the input data is optional.
826 ## [2.4.9] - 2023-04-15
830 - Add tasks queue enablement runtime setter to pool.
831 - Add tasks queue options runtime setter to pool.
832 - Add worker choice strategy options runtime setter to pool.
836 - Remove the tasks queuing experimental status.
840 - Fix task function type definition and validation.
841 - Fix worker choice strategy options handling.
843 ## [2.4.8] - 2023-04-12
847 - Fix message between main worker and worker type definition for tasks.
848 - Fix code documentation.
850 ## [2.4.7] - 2023-04-11
854 - Add worker tasks queue options to pool options.
858 - Fix missing documentation.
860 ## [2.4.6] - 2023-04-10
864 - Ensure one task at a time is executed per worker with tasks queueing enabled.
865 - Properly count worker executing tasks with tasks queueing enabled.
867 ## [2.4.5] - 2023-04-09
871 - Use monotonic high resolution timer for worker tasks runtime.
872 - Add worker tasks median runtime to statistics.
873 - Add worker tasks queue (experimental).
875 ## [2.4.4] - 2023-04-07
879 - Add `PoolEvents` enumeration and `PoolEvent` type.
883 - Destroy worker only on alive check.
885 ## [2.4.3] - 2023-04-07
889 - Fix typedoc generation with inheritance.
891 ## [2.4.2] - 2023-04-06
895 - Add `full` event to dynamic pool.
896 - Keep worker choice strategy in memory for conditional reuse.
900 - Fix possible negative worker key at worker removal in worker choice strategies.
902 ## [2.4.1] - 2023-04-05
906 - Optimize worker choice strategy for dynamic pool.
910 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
912 ## [2.4.0] - 2023-04-04
916 - Add `LESS_BUSY` worker choice strategy.
920 - Optimize worker storage in pool.
921 - Optimize worker alive status check.
922 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
923 - Optimize `LESS_USED` worker choice strategy.
924 - Update benchmark versus external threads pools.
925 - Optimize tasks usage statistics requirements for worker choice strategy.
929 - Ensure trimmable characters are checked at pool initialization.
930 - Fix message id integer overflow.
931 - Fix pool worker removal in worker choice strategy internals.
932 - Fix package publication with pnpm.
934 ## [2.4.0-3] - 2023-04-04
938 - Add `LESS_BUSY` worker choice strategy.
942 - Optimize worker storage in pool.
943 - Optimize worker alive status check.
944 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
945 - Optimize `LESS_USED` worker choice strategy.
946 - Update benchmark versus external threads pools.
950 - Ensure trimmable characters are checked at pool initialization.
951 - Fix message id integer overflow.
952 - Fix pool worker removal in worker choice strategy internals.
953 - Fix package publication with pnpm.
955 ## [2.4.0-2] - 2023-04-03
959 - Add `LESS_BUSY` worker choice strategy.
963 - Optimize worker storage in pool.
964 - Optimize worker alive status check.
965 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
966 - Optimize `LESS_USED` worker choice strategy.
970 - Ensure trimmable characters are checked at pool initialization.
971 - Fix message id integer overflow.
972 - Fix pool worker removal in worker choice strategy internals.
973 - Fix package publication with pnpm.
975 ## [2.4.0-1] - 2023-04-03
979 - Add `LESS_BUSY` worker choice strategy.
983 - Optimize worker storage in pool.
984 - Optimize worker alive status check.
985 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
986 - Optimize `LESS_USED` worker choice strategy.
990 - Ensure trimmable characters are checked at pool initialization.
991 - Fix message id integer overflow.
992 - Fix pool worker removal in worker choice strategy internals.
994 ## [2.4.0-0] - 2023-04-03
998 - Add `LESS_BUSY` worker choice strategy.
1002 - Optimize worker storage in pool.
1003 - Optimize worker alive status check.
1004 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1005 - Optimize `LESS_USED` worker choice strategy.
1009 - Ensure trimmable characters are checked at pool initialization.
1010 - Fix message id integer overflow.
1011 - Fix pool worker removal in worker choice strategy internals.
1013 ## [2.3.10] - 2023-03-18
1017 - Fix package.json `exports` syntax for ESM and CommonJS.
1021 - Permit SemVer pre-release publication.
1023 ## [2.3.10-2] - 2023-03-18
1027 - Fix package.json `exports` syntax for ESM and CommonJS.
1029 ## [2.3.10-1] - 2023-03-18
1033 - Permit SemVer pre-release publication.
1035 ## [2.3.10-0] - 2023-03-18
1039 - Fix package.json `exports` syntax for ESM and CommonJS.
1041 ## [2.3.9] - 2023-03-18
1045 - Introduce ESM module support along with CommonJS one.
1049 - Fix brown paper bag bug referencing the same object literal.
1051 ## [2.3.8] - 2023-03-18
1055 - Switch internal benchmarking code to benny.
1056 - Switch to TypeScript 5.x.x.
1057 - Switch rollup bundler plugins to core ones.
1058 - Switch to TSDoc syntax.
1059 - Enforce conventional commits.
1063 - Fix random integer generator.
1064 - Fix worker choice strategy pool type identification at initialization.
1066 ## [2.3.7] - 2022-10-23
1070 - Switch to open collective FOSS project funding platform.
1071 - Switch to ts-standard linter configuration on TypeScript code.
1075 - Fixed missing async on pool execute method.
1076 - Fixed typing in TypeScript example.
1077 - Fixed types in unit tests.
1079 ## [2.3.6] - 2022-10-22
1083 - Cleanup pool attributes and methods.
1084 - Refine error types thrown.
1088 - Fix continuous integration build on windows.
1089 - Fix code coverage reporting by using c8 instead of nyc.
1091 ## [2.3.5] - 2022-10-21
1095 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
1096 - Optimize tasks usage lookup implementation.
1100 - Fix missed pool event emitter type export.
1101 - Fix typedoc documentation generation.
1103 ## [2.3.4] - 2022-10-17
1107 - Fully automate release process with release-it.
1111 - Optimize fair share task scheduling algorithm implementation.
1112 - Update benchmark versus external pools results with latest version.
1114 ## [2.3.3] - 2022-10-15
1118 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
1120 ## [2.3.2] - 2022-10-14
1124 - Optimize fair share worker selection strategy implementation.
1128 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
1130 ## [2.3.1] - 2022-10-13
1134 - Pool worker choice strategies:
1135 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
1136 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
1138 ## [2.2.2] - 2022-10-09
1142 - Fixed `README.md` file.
1144 ## [2.2.1] - 2022-10-08
1148 - Dynamic worker choice strategy change at runtime.
1150 ## [2.2.0] - 2022-01-05
1152 ### Breaking Changes
1154 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
1156 ## [2.1.0] - 2021-08-29
1160 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
1162 ### Breaking Changes
1164 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
1165 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
1166 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
1167 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
1169 ## [2.0.2] - 2021-05-12
1173 - Fix `busy` event emission on fixed pool type
1175 ## [2.0.1] - 2021-03-16
1179 - Check if pool options are properly set.
1180 - `busy` event is emitted on all pool types.
1182 ## [2.0.0] - 2021-03-01
1186 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1188 ### Breaking Changes
1190 - `FullPool` event is now renamed to `busy`.
1191 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1192 _Find more details on our JSDoc._
1194 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1196 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1198 ### Pool options types declaration merge
1200 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1202 #### New `export` strategy
1206 const DynamicThreadPool = require('poolifier/lib/dynamic')
1208 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1211 But you should always prefer just using
1214 const { DynamicThreadPool } = require('poolifier')
1217 #### New type definitions for input data and response
1219 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1220 _This is not a limitation by poolifier but Node.js._
1222 #### Public property replacements
1224 `numWorkers` property is now `numberOfWorkers`
1226 #### Internal (protected) properties and methods renaming
1228 These properties are not intended for end users
1230 - `id` => `nextMessageId`
1232 These methods are not intended for end users
1234 - `_chooseWorker` => `chooseWorker`
1235 - `_newWorker` => `createWorker`
1236 - `_execute` => `internalExecute`
1237 - `_chooseWorker` => `chooseWorker`
1238 - `_checkAlive` => `checkAlive`
1240 - `_runAsync` => `runAsync`
1242 ## [1.1.0] - 2020-05-21
1246 - ThreadWorker support async functions as option
1247 - Various external library patches
1249 ## [1.0.0] - 2020-01-24
1253 - FixedThreadPool implementation
1254 - DynamicThreadPool implementation
1255 - WorkerThread implementation to improve developer experience