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 ## [3.0.11] - 2023-12-11
14 - Ensure pool asynchronous resource properly track tasks execution
16 ## [3.0.10] - 2023-12-08
20 - Add a fastpath when tasks stealing or redistribution is impossible
22 ## [3.0.9] - 2023-11-26
26 - Remove all pool events listener at pool destroying.
27 - Remove all worker node events listener at worker node destroying.
28 - Fix worker node event emitter listeners handling memory leak at pool options runtime change.
30 ## [3.0.8] - 2023-11-25
34 - Ensure continuous tasks stealing on idle start at worker node idling
36 ## [3.0.7] - 2023-11-24
40 - Make continuous tasks stealing start at worker node idling.
42 ## [3.0.6] - 2023-11-24
46 - Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
47 - Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.
49 ## [3.0.5] - 2023-10-27
53 - Ensure pool `ready` event can be emitted only once.
55 ## [3.0.4] - 2023-10-20
59 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
60 - Use builtin retry mechanism in worker choice strategies instead of custom one.
62 ## [3.0.3] - 2023-10-19
66 - Avoid null exception at sending message to worker.
67 - Avoid null exception at checking worker node readiness.
69 ## [3.0.2] - 2023-10-17
73 - 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).
75 ## [3.0.1] - 2023-10-16
79 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
83 - Switch the worker node eventing code to `EventTarget` API.
85 ## [3.0.0] - 2023-10-08
89 - Remove Node.js 16.x.x (EOL) support.
91 ## [2.7.5] - 2023-10-03
95 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
97 ## [2.7.4] - 2023-09-25
101 - Fix source maps (bundler issue).
103 ## [2.7.3] - 2023-09-24
107 - Convert pool event emitter to event emitter async resource.
109 ## [2.7.2] - 2023-09-23
113 - Add source maps to npm package to ease debugging.
117 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
119 ## [2.7.1] - 2023-09-20
123 - Ensure worker message listener used one time are removed after usage.
125 ## [2.7.0] - 2023-09-19
129 - Fix task stealing related tasks queue options handling at runtime.
133 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
137 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
138 - Stricter worker constructor arguments validation.
140 ## [2.6.45] - 2023-09-17
144 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
148 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
149 - Add `start()` method to pool API to start the minimum number of workers.
150 - 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.
151 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
153 ## [2.6.44] - 2023-09-08
157 - Use a dedicated PAT to publish on GitHub packages registry.
161 - Publish on GitHub packages registry on release.
165 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
167 ## [2.6.43] - 2023-09-08
171 - Publish on GitHub packages registry on release.
175 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
177 ## [2.6.42] - 2023-09-06
181 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
183 ## [2.6.41] - 2023-09-03
187 - Optimize worker choice strategies implementation.
189 ## [2.6.40] - 2023-09-01
193 - Do not pre-choose in WRR worker choice strategy to avoid bias.
194 - Avoid array out of bound in worker choice strategies after worker node removal.
196 ## [2.6.39] - 2023-08-30
200 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
202 ## [2.6.38] - 2023-08-30
206 - Bundle typescript types declaration into one file.
210 - Improve interleaved weighted round robin worker choice strategy implementation.
212 ## [2.6.37] - 2023-08-28
216 - Ensure unused worker usage statistics are deleted at runtime.
220 - Rename worker choice strategy options `choiceRetries` to `retries`.
221 - Avoid unnecessary branching in worker choice strategies.
223 ## [2.6.36] - 2023-08-27
227 - Fix pool `execute()` arguments check.
231 - Make continuous tasks stealing algorithm less aggressive.
232 - Fine tune tasks stealing algorithm under back pressure.
234 ## [2.6.35] - 2023-08-25
238 - Don't account worker usage statistics for tasks that have failed.
239 - Fix pool information runtime and wait time median computation.
243 - Update simple moving average implementation to use a circular buffer.
244 - Update simple moving median implementation to use a circular buffer.
245 - Account for stolen tasks in worker usage statistics and pool information.
249 - Continuous tasks stealing algorithm.
251 ## [2.6.34] - 2023-08-24
255 - Avoid cascading tasks stealing under back pressure.
259 - Add fastpath to queued tasks rescheduling.
261 ## [2.6.33] - 2023-08-24
265 - Fix queued tasks rescheduling.
269 - Rename tasks queue options `queueMaxSize` to `size`.
273 - Task stealing scheduling algorithm if tasks queueing is enabled.
275 ## [2.6.32] - 2023-08-23
279 - Ensure no task can be executed when the pool is destroyed.
283 - Add `queueMaxSize` option to tasks queue options.
284 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
285 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
287 ## [2.6.31] - 2023-08-20
291 - Fix worker choice strategy retries mechanism in some edge cases.
295 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
296 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
298 ## [2.6.30] - 2023-08-19
302 - Ensure pool event `backPressure` is emitted.
303 - Ensure pool event `full` is emitted only once.
304 - Ensure worker node cannot be instantiated without proper arguments.
306 ## [2.6.29] - 2023-08-18
310 - Fix race condition between readiness and task functions worker message handling at startup.
311 - Fix duplicate task function worker usage statistics computation per task function.
312 - Update task function worker usage statistics if and only if there's at least two different task functions.
313 - Fix race condition at task function worker usage executing task computation leading to negative value.
317 - 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).
318 - Use back pressure detection in worker choice strategies.
319 - Add worker choice strategies retries mechanism if no worker is eligible.
321 ## [2.6.28] - 2023-08-16
325 - Ensure pool workers are properly initialized.
329 - HTTP server pool examples: express-cluster, express-hybrid.
333 - Remove now useless branching in worker hot code path.
335 ## [2.6.27] - 2023-08-15
339 - Add `KillHandler` type definition to exported types.
343 - Add `destroy` event to pool API.
345 ## [2.6.26] - 2023-08-15
349 - Add kill handler to worker options allowing to execute custom code when worker is killed.
350 - Add `listTaskFunctions()` method to pool API.
351 - SMTP client pool example: nodemailer.
353 ## [2.6.25] - 2023-08-13
357 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
358 - WebSocket server pool examples: ws-cluster, ws-hybrid.
360 ## [2.6.24] - 2023-08-12
364 - Add array of transferable objects to the `execute()` method arguments.
365 - WebSocket server pool examples: ws-worker_threads.
367 ## [2.6.23] - 2023-08-11
371 - 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.
375 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
376 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
378 ## [2.6.22] - 2023-08-10
382 - Add missing `types` field to package.json `exports`.
386 - Structure markdown documentation (PR #811).
388 ## [2.6.21] - 2023-08-03
392 - Improve code documentation.
393 - Code refactoring and cleanup for better maintainability and readability.
395 ## [2.6.20] - 2023-07-21
399 - Fix queued tasks redistribution on error task execution starvation.
400 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
404 - Drastically reduce lookups by worker in the worker nodes.
406 ## [2.6.19] - 2023-07-20
410 - Dedicated internal communication channel for worker_threads pools.
412 ## [2.6.18] - 2023-07-19
416 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
418 ## [2.6.17] - 2023-07-16
422 - Add `listTaskFunctions()` method to worker API.
424 ## [2.6.16] - 2023-07-12
428 - Fix pool startup detection.
429 - Fix worker task functions handling.
431 ## [2.6.15] - 2023-07-11
435 - Take into account worker node readiness in worker choice strategies.
437 ## [2.6.14] - 2023-07-10
441 - Fix task function statistics tracking.
443 ## [2.6.13] - 2023-07-10
447 - Add per task function statistics tracking.
448 - Add public methods to manipulate the worker task functions at runtime.
450 ## [2.6.12] - 2023-07-09
454 - Workaround import issue with `node:os` module in node 16.x.x.
456 ## [2.6.11] - 2023-07-09
460 - Fix pool readiness semantic.
462 ## [2.6.10] - 2023-07-08
466 - Ensure workers are not recreated on error at pool startup.
470 - Add `ready` and `strategy` fields to pool information.
471 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
472 - Add dynamic pool sizing checks.
474 ## [2.6.9] - 2023-07-07
478 - Recreate the right worker type on uncaught exception.
482 - Add minimum and maximum to internal measurement statistics.
483 - Add `runTime` and `waitTime` to pool information.
484 - Check worker inactive time only on dynamic worker.
486 ## [2.6.8] - 2023-07-03
490 - Brown paper bag release to fix version handling in pool information.
492 ## [2.6.7] - 2023-07-03
496 - Ensure worker queued tasks at error are reassigned to other pool workers.
500 - Add pool `utilization` ratio to pool information.
501 - Add `version` to pool information.
502 - Add worker information to worker nodes.
504 ## [2.6.6] - 2023-07-01
508 - Add safe helper `availableParallelism()` to help sizing the pool.
512 - Ensure message handler is only registered in worker.
514 ## [2.6.5] - 2023-06-27
518 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
522 - Artificial version bump to 2.6.5 to workaround publication issue.
523 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
524 - Ensure pool event is emitted before task error promise rejection.
525 - Fix queued tasks count computation.
529 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
531 ## [2.6.4] - 2023-06-27
535 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
539 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
540 - Ensure pool event is emitted before task error promise rejection.
541 - Fix queued tasks count computation.
545 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
547 ## [2.6.3] - 2023-06-19
551 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
552 - Update strategies internals after statistics computation.
556 - Optimize O(1) queue implementation.
558 ## [2.6.2] - 2023-06-12
562 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
564 ## [2.6.1] - 2023-06-10
568 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
572 - Fix average statistics computation: ensure failed tasks are not accounted.
574 ## [2.6.0] - 2023-06-09
578 - Add `LEAST_ELU` worker choice strategy (experimental).
579 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
583 - Refactor pool worker node usage internals.
584 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
585 - Breaking change: pool information `info` property object fields have been renamed.
589 - Fix wait time accounting.
590 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
591 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
593 ## [2.5.4] - 2023-06-07
597 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
601 - Compute statistics at the worker level only if needed.
602 - Add `worker_threads` options to thread pool options.
606 - Make the `LEAST_BUSY` strategy only relies on task runtime.
608 ## [2.5.3] - 2023-06-04
612 - Refine pool information content.
613 - Limit pool internals public exposure.
615 ## [2.5.2] - 2023-06-02
619 - Add `taskError` pool event for task execution error.
620 - Add pool information `info` property to pool.
621 - Emit pool information on `busy` and `full` pool events.
623 ## [2.5.1] - 2023-06-01
627 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
628 - Add `error` pool event for uncaught worker error.
630 ## [2.5.0] - 2023-05-31
634 - Switch pool event emitter to `EventEmitterAsyncResource`.
635 - Add tasks wait time accounting in per worker tasks usage.
636 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
640 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
642 ## [2.4.14] - 2023-05-09
646 - Ensure no undefined task runtime can land in the tasks history.
647 - Fix median computation implementation once again.
651 - Unit tests for median and queue implementations.
653 ## [2.4.13] - 2023-05-08
657 - Fix worker choice strategy options validation.
658 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
660 ## [2.4.12] - 2023-05-06
664 - Support multiple task functions per worker.
665 - Add custom worker weights support to worker choice strategies options.
669 - Use O(1) queue implementation for tasks queueing.
673 - Fix median computation implementation.
674 - Fix fair share worker choice strategy internals update.
676 ## [2.4.11] - 2023-04-23
680 - Optimize free worker finding in worker choice strategies.
682 ## [2.4.10] - 2023-04-15
686 - Fix typescript type definition for task function: ensure the input data is optional.
687 - Fix typescript type definition for pool execute(): ensure the input data is optional.
689 ## [2.4.9] - 2023-04-15
693 - Add tasks queue enablement runtime setter to pool.
694 - Add tasks queue options runtime setter to pool.
695 - Add worker choice strategy options runtime setter to pool.
699 - Remove the tasks queuing experimental status.
703 - Fix task function type definition and validation.
704 - Fix worker choice strategy options handling.
706 ## [2.4.8] - 2023-04-12
710 - Fix message between main worker and worker type definition for tasks.
711 - Fix code documentation.
713 ## [2.4.7] - 2023-04-11
717 - Add worker tasks queue options to pool options.
721 - Fix missing documentation.
723 ## [2.4.6] - 2023-04-10
727 - Ensure one task at a time is executed per worker with tasks queueing enabled.
728 - Properly count worker executing tasks with tasks queueing enabled.
730 ## [2.4.5] - 2023-04-09
734 - Use monotonic high resolution timer for worker tasks runtime.
735 - Add worker tasks median runtime to statistics.
736 - Add worker tasks queue (experimental).
738 ## [2.4.4] - 2023-04-07
742 - Add `PoolEvents` enumeration and `PoolEvent` type.
746 - Destroy worker only on alive check.
748 ## [2.4.3] - 2023-04-07
752 - Fix typedoc generation with inheritance.
754 ## [2.4.2] - 2023-04-06
758 - Add `full` event to dynamic pool.
759 - Keep worker choice strategy in memory for conditional reuse.
763 - Fix possible negative worker key at worker removal in worker choice strategies.
765 ## [2.4.1] - 2023-04-05
769 - Optimize worker choice strategy for dynamic pool.
773 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
775 ## [2.4.0] - 2023-04-04
779 - Add `LESS_BUSY` worker choice strategy.
783 - Optimize worker storage in pool.
784 - Optimize worker alive status check.
785 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
786 - Optimize `LESS_USED` worker choice strategy.
787 - Update benchmark versus external threads pools.
788 - Optimize tasks usage statistics requirements for worker choice strategy.
792 - Ensure trimmable characters are checked at pool initialization.
793 - Fix message id integer overflow.
794 - Fix pool worker removal in worker choice strategy internals.
795 - Fix package publication with pnpm.
797 ## [2.4.0-3] - 2023-04-04
801 - Add `LESS_BUSY` worker choice strategy.
805 - Optimize worker storage in pool.
806 - Optimize worker alive status check.
807 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
808 - Optimize `LESS_USED` worker choice strategy.
809 - Update benchmark versus external threads pools.
813 - Ensure trimmable characters are checked at pool initialization.
814 - Fix message id integer overflow.
815 - Fix pool worker removal in worker choice strategy internals.
816 - Fix package publication with pnpm.
818 ## [2.4.0-2] - 2023-04-03
822 - Add `LESS_BUSY` worker choice strategy.
826 - Optimize worker storage in pool.
827 - Optimize worker alive status check.
828 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
829 - Optimize `LESS_USED` worker choice strategy.
833 - Ensure trimmable characters are checked at pool initialization.
834 - Fix message id integer overflow.
835 - Fix pool worker removal in worker choice strategy internals.
836 - Fix package publication with pnpm.
838 ## [2.4.0-1] - 2023-04-03
842 - Add `LESS_BUSY` worker choice strategy.
846 - Optimize worker storage in pool.
847 - Optimize worker alive status check.
848 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
849 - Optimize `LESS_USED` worker choice strategy.
853 - Ensure trimmable characters are checked at pool initialization.
854 - Fix message id integer overflow.
855 - Fix pool worker removal in worker choice strategy internals.
857 ## [2.4.0-0] - 2023-04-03
861 - Add `LESS_BUSY` worker choice strategy.
865 - Optimize worker storage in pool.
866 - Optimize worker alive status check.
867 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
868 - Optimize `LESS_USED` worker choice strategy.
872 - Ensure trimmable characters are checked at pool initialization.
873 - Fix message id integer overflow.
874 - Fix pool worker removal in worker choice strategy internals.
876 ## [2.3.10] - 2023-03-18
880 - Fix package.json `exports` syntax for ESM and CommonJS.
884 - Permit SemVer pre-release publication.
886 ## [2.3.10-2] - 2023-03-18
890 - Fix package.json `exports` syntax for ESM and CommonJS.
892 ## [2.3.10-1] - 2023-03-18
896 - Permit SemVer pre-release publication.
898 ## [2.3.10-0] - 2023-03-18
902 - Fix package.json `exports` syntax for ESM and CommonJS.
904 ## [2.3.9] - 2023-03-18
908 - Introduce ESM module support along with CommonJS one.
912 - Fix brown paper bag bug referencing the same object literal.
914 ## [2.3.8] - 2023-03-18
918 - Switch internal benchmarking code to benny.
919 - Switch to TypeScript 5.x.x.
920 - Switch rollup bundler plugins to core ones.
921 - Switch to TSDoc syntax.
922 - Enforce conventional commits.
926 - Fix random integer generator.
927 - Fix worker choice strategy pool type identification at initialization.
929 ## [2.3.7] - 2022-10-23
933 - Switch to open collective FOSS project funding platform.
934 - Switch to ts-standard linter configuration on TypeScript code.
938 - Fixed missing async on pool execute method.
939 - Fixed typing in TypeScript example.
940 - Fixed types in unit tests.
942 ## [2.3.6] - 2022-10-22
946 - Cleanup pool attributes and methods.
947 - Refine error types thrown.
951 - Fix continuous integration build on windows.
952 - Fix code coverage reporting by using c8 instead of nyc.
954 ## [2.3.5] - 2022-10-21
958 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
959 - Optimize tasks usage lookup implementation.
963 - Fix missed pool event emitter type export.
964 - Fix typedoc documentation generation.
966 ## [2.3.4] - 2022-10-17
970 - Fully automate release process with release-it.
974 - Optimize fair share task scheduling algorithm implementation.
975 - Update benchmark versus external pools results with latest version.
977 ## [2.3.3] - 2022-10-15
981 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
983 ## [2.3.2] - 2022-10-14
987 - Optimize fair share worker selection strategy implementation.
991 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
993 ## [2.3.1] - 2022-10-13
997 - Pool worker choice strategies:
998 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
999 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
1001 ## [2.2.2] - 2022-10-09
1005 - Fixed `README.md` file.
1007 ## [2.2.1] - 2022-10-08
1011 - Dynamic worker choice strategy change at runtime.
1013 ## [2.2.0] - 2022-01-05
1015 ### Breaking Changes
1017 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
1019 ## [2.1.0] - 2021-08-29
1023 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
1025 ### Breaking Changes
1027 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
1028 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
1029 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
1030 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
1032 ## [2.0.2] - 2021-05-12
1036 - Fix `busy` event emission on fixed pool type
1038 ## [2.0.1] - 2021-03-16
1042 - Check if pool options are properly set.
1043 - `busy` event is emitted on all pool types.
1045 ## [2.0.0] - 2021-03-01
1049 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1051 ### Breaking Changes
1053 - `FullPool` event is now renamed to `busy`.
1054 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1055 _Find more details on our JSDoc._
1057 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1059 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1061 ### Pool options types declaration merge
1063 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1065 #### New `export` strategy
1069 const DynamicThreadPool = require('poolifier/lib/dynamic')
1071 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1074 But you should always prefer just using
1077 const { DynamicThreadPool } = require('poolifier')
1080 #### New type definitions for input data and response
1082 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1083 _This is not a limitation by poolifier but Node.js._
1085 #### Public property replacements
1087 `numWorkers` property is now `numberOfWorkers`
1089 #### Internal (protected) properties and methods renaming
1091 These properties are not intended for end users
1093 - `id` => `nextMessageId`
1095 These methods are not intended for end users
1097 - `_chooseWorker` => `chooseWorker`
1098 - `_newWorker` => `createWorker`
1099 - `_execute` => `internalExecute`
1100 - `_chooseWorker` => `chooseWorker`
1101 - `_checkAlive` => `checkAlive`
1103 - `_runAsync` => `runAsync`
1105 ## [1.1.0] - 2020-05-21
1109 - ThreadWorker support async functions as option
1110 - Various external library patches
1112 ## [1.0.0] - 2020-01-24
1116 - FixedThreadPool implementation
1117 - DynamicThreadPool implementation
1118 - WorkerThread implementation to improve developer experience