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 ## [3.1.24] - 2024-03-27
14 - Fix publishing on JSR.
16 ## [3.1.23] - 2024-03-27
22 ## [3.1.22] - 2024-03-15
26 - Fix pool event emitter registered callbacks removal at `destroy()`.
28 ## [3.1.21] - 2024-02-22
32 - Fix null exception regression: [#1496](https://github.com/poolifier/poolifier/issues/1496).
34 ## [3.1.20] - 2024-02-11
38 - Ensure `worker_threads` workers are unreferenced at termination.
40 ## [3.1.19] - 2024-01-16
44 - Fix possible null exception at task finishing handling.
48 - Optimize Deque implementation to improve tasks queueing performance.
50 ## [3.1.18] - 2024-01-06
54 - Fix dynamic pool with minimum number of workers set to zero: [#1748](https://github.com/poolifier/poolifier/issues/1748).
56 ## [3.1.17] - 2024-01-05
60 - Improve performance by clean up unneeded condition checks on hot code paths.
62 ## [3.1.16] - 2024-01-03
66 - Add missing type to TS type definitions.
68 ## [3.1.15] - 2024-01-02
72 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
74 ## [3.1.15-0] - 2024-01-02
78 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
80 ## [3.1.14] - 2024-01-01
84 - Properly handle dynamic pool with zero minimum size.
86 ## [3.1.13] - 2023-12-30
90 - Reduce branching in several hot code paths.
91 - Use faster object cloning implementation.
93 ## [3.1.12] - 2023-12-27
97 - Fix tasks redistribution triggers at pool destroying.
101 - Switch TypeScript module resolution to Node16.
103 ## [3.1.12-0] - 2023-12-27
107 - Fix tasks redistribution triggers at pool destroying.
109 ## [3.1.11] - 2023-12-24
113 - Avoid worker node cross tasks stealing.
114 - Ensure only half the pool worker nodes can steal tasks.
116 ## [3.1.10] - 2023-12-23
120 - Avoid useless branching on pool type.
122 ## [3.1.9] - 2023-12-22
126 - Readd ThreadPoolOptions and ClusterPoolOptions TS type aliases to PoolOptions.
128 ## [3.1.8] - 2023-12-21
132 - Fix default worker weight computation.
133 - Fix possible null exception at pool destroying.
135 ## [3.1.7] - 2023-12-20
139 - Ensure worker choice strategies implementation wait for worker node readiness: [#1748](https://github.com/poolifier/poolifier/issues/1748).
141 ## [3.1.6] - 2023-12-18
145 - Fix pool destroying with tasks queuing enabled.
147 ## [3.1.5] - 2023-12-18
151 - Add queued tasks end timeout support to worker node termination.
153 ## [3.1.4] - 2023-12-18
157 - Make more robust the fix for possible null exception at handling task execution response.
159 ## [3.1.3] - 2023-12-17
163 - Fix possible null exception at handling task execution response.
165 ## [3.1.2] - 2023-12-17
169 - Wait for queued tasks to end at worker node termination.
171 ## [3.1.1] - 2023-12-16
175 - Fix pool options TS type definition.
177 ## [3.1.0] - 2023-12-16
181 - TypeScript breaking change: merge ThreadPoolOptions and ClusterPoolOptions types into PoolOptions type.
183 ## [3.0.14] - 2023-12-13
187 - Fix possible null exception with worker_threads pools.
189 ## [3.0.13] - 2023-12-12
193 - Ensure worker choice strategy wait for worker nodes readiness.
197 - Remove infinite retries support in worker choice strategy to avoid configuration leading to possible infinite recursion or loop.
199 ## [3.0.12] - 2023-12-12
203 - Add infinite retries support in worker choice strategy.
205 ## [3.0.11] - 2023-12-11
209 - Ensure pool asynchronous resource properly track tasks execution.
211 ## [3.0.10] - 2023-12-08
215 - Add a fastpath when tasks stealing or redistribution is impossible.
217 ## [3.0.9] - 2023-11-26
221 - Remove all pool events listener at pool destroying.
222 - Remove all worker node events listener at worker node destroying.
223 - Fix worker node event emitter listeners handling memory leak at pool options runtime change.
225 ## [3.0.8] - 2023-11-25
229 - Ensure continuous tasks stealing on idle start at worker node idling.
231 ## [3.0.7] - 2023-11-24
235 - Make continuous tasks stealing start at worker node idling.
237 ## [3.0.6] - 2023-11-24
241 - Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
242 - Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.
244 ## [3.0.5] - 2023-10-27
248 - Ensure pool `ready` event can be emitted only once.
250 ## [3.0.4] - 2023-10-20
254 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
255 - Use builtin retry mechanism in worker choice strategies instead of custom one.
257 ## [3.0.3] - 2023-10-19
261 - Avoid null exception at sending message to worker.
262 - Avoid null exception at checking worker node readiness.
264 ## [3.0.2] - 2023-10-17
268 - 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).
270 ## [3.0.1] - 2023-10-16
274 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
278 - Switch the worker node eventing code to `EventTarget` API.
280 ## [3.0.0] - 2023-10-08
284 - Remove Node.js 16.x.x (EOL) support.
286 ## [2.7.5] - 2023-10-03
290 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
292 ## [2.7.4] - 2023-09-25
296 - Fix source maps (bundler issue).
298 ## [2.7.3] - 2023-09-24
302 - Convert pool event emitter to event emitter async resource.
304 ## [2.7.2] - 2023-09-23
308 - Add source maps to npm package to ease debugging.
312 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
314 ## [2.7.1] - 2023-09-20
318 - Ensure worker message listener used one time are removed after usage.
320 ## [2.7.0] - 2023-09-19
324 - Fix task stealing related tasks queue options handling at runtime.
328 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
332 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
333 - Stricter worker constructor arguments validation.
335 ## [2.6.45] - 2023-09-17
339 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
343 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
344 - Add `start()` method to pool API to start the minimum number of workers.
345 - 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.
346 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
348 ## [2.6.44] - 2023-09-08
352 - Use a dedicated PAT to publish on GitHub packages registry.
356 - Publish on GitHub packages registry on release.
360 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
362 ## [2.6.43] - 2023-09-08
366 - Publish on GitHub packages registry on release.
370 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
372 ## [2.6.42] - 2023-09-06
376 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
378 ## [2.6.41] - 2023-09-03
382 - Optimize worker choice strategies implementation.
384 ## [2.6.40] - 2023-09-01
388 - Do not pre-choose in WRR worker choice strategy to avoid bias.
389 - Avoid array out of bound in worker choice strategies after worker node removal.
391 ## [2.6.39] - 2023-08-30
395 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
397 ## [2.6.38] - 2023-08-30
401 - Bundle typescript types declaration into one file.
405 - Improve interleaved weighted round robin worker choice strategy implementation.
407 ## [2.6.37] - 2023-08-28
411 - Ensure unused worker usage statistics are deleted at runtime.
415 - Rename worker choice strategy options `choiceRetries` to `retries`.
416 - Avoid unnecessary branching in worker choice strategies.
418 ## [2.6.36] - 2023-08-27
422 - Fix pool `execute()` arguments check.
426 - Make continuous tasks stealing algorithm less aggressive.
427 - Fine tune tasks stealing algorithm under back pressure.
429 ## [2.6.35] - 2023-08-25
433 - Don't account worker usage statistics for tasks that have failed.
434 - Fix pool information runtime and wait time median computation.
438 - Update simple moving average implementation to use a circular buffer.
439 - Update simple moving median implementation to use a circular buffer.
440 - Account for stolen tasks in worker usage statistics and pool information.
444 - Continuous tasks stealing algorithm.
446 ## [2.6.34] - 2023-08-24
450 - Avoid cascading tasks stealing under back pressure.
454 - Add fastpath to queued tasks rescheduling.
456 ## [2.6.33] - 2023-08-24
460 - Fix queued tasks rescheduling.
464 - Rename tasks queue options `queueMaxSize` to `size`.
468 - Task stealing scheduling algorithm if tasks queueing is enabled.
470 ## [2.6.32] - 2023-08-23
474 - Ensure no task can be executed when the pool is destroyed.
478 - Add `queueMaxSize` option to tasks queue options.
479 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
480 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
482 ## [2.6.31] - 2023-08-20
486 - Fix worker choice strategy retries mechanism in some edge cases.
490 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
491 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
493 ## [2.6.30] - 2023-08-19
497 - Ensure pool event `backPressure` is emitted.
498 - Ensure pool event `full` is emitted only once.
499 - Ensure worker node cannot be instantiated without proper arguments.
501 ## [2.6.29] - 2023-08-18
505 - Fix race condition between readiness and task functions worker message handling at startup.
506 - Fix duplicate task function worker usage statistics computation per task function.
507 - Update task function worker usage statistics if and only if there's at least two different task functions.
508 - Fix race condition at task function worker usage executing task computation leading to negative value.
512 - 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).
513 - Use back pressure detection in worker choice strategies.
514 - Add worker choice strategies retries mechanism if no worker is eligible.
516 ## [2.6.28] - 2023-08-16
520 - Ensure pool workers are properly initialized.
524 - HTTP server pool examples: express-cluster, express-hybrid.
528 - Remove now useless branching in worker hot code path.
530 ## [2.6.27] - 2023-08-15
534 - Add `KillHandler` type definition to exported types.
538 - Add `destroy` event to pool API.
540 ## [2.6.26] - 2023-08-15
544 - Add kill handler to worker options allowing to execute custom code when worker is killed.
545 - Add `listTaskFunctions()` method to pool API.
546 - SMTP client pool example: nodemailer.
548 ## [2.6.25] - 2023-08-13
552 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
553 - WebSocket server pool examples: ws-cluster, ws-hybrid.
555 ## [2.6.24] - 2023-08-12
559 - Add array of transferable objects to the `execute()` method arguments.
560 - WebSocket server pool examples: ws-worker_threads.
562 ## [2.6.23] - 2023-08-11
566 - 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.
570 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
571 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
573 ## [2.6.22] - 2023-08-10
577 - Add missing `types` field to package.json `exports`.
581 - Structure markdown documentation (PR #811).
583 ## [2.6.21] - 2023-08-03
587 - Improve code documentation.
588 - Code refactoring and cleanup for better maintainability and readability.
590 ## [2.6.20] - 2023-07-21
594 - Fix queued tasks redistribution on error task execution starvation.
595 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
599 - Drastically reduce lookups by worker in the worker nodes.
601 ## [2.6.19] - 2023-07-20
605 - Dedicated internal communication channel for worker_threads pools.
607 ## [2.6.18] - 2023-07-19
611 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
613 ## [2.6.17] - 2023-07-16
617 - Add `listTaskFunctions()` method to worker API.
619 ## [2.6.16] - 2023-07-12
623 - Fix pool startup detection.
624 - Fix worker task functions handling.
626 ## [2.6.15] - 2023-07-11
630 - Take into account worker node readiness in worker choice strategies.
632 ## [2.6.14] - 2023-07-10
636 - Fix task function statistics tracking.
638 ## [2.6.13] - 2023-07-10
642 - Add per task function statistics tracking.
643 - Add public methods to manipulate the worker task functions at runtime.
645 ## [2.6.12] - 2023-07-09
649 - Workaround import issue with `node:os` module in node 16.x.x.
651 ## [2.6.11] - 2023-07-09
655 - Fix pool readiness semantic.
657 ## [2.6.10] - 2023-07-08
661 - Ensure workers are not recreated on error at pool startup.
665 - Add `ready` and `strategy` fields to pool information.
666 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
667 - Add dynamic pool sizing checks.
669 ## [2.6.9] - 2023-07-07
673 - Recreate the right worker type on uncaught exception.
677 - Add minimum and maximum to internal measurement statistics.
678 - Add `runTime` and `waitTime` to pool information.
679 - Check worker inactive time only on dynamic worker.
681 ## [2.6.8] - 2023-07-03
685 - Brown paper bag release to fix version handling in pool information.
687 ## [2.6.7] - 2023-07-03
691 - Ensure worker queued tasks at error are reassigned to other pool workers.
695 - Add pool `utilization` ratio to pool information.
696 - Add `version` to pool information.
697 - Add worker information to worker nodes.
699 ## [2.6.6] - 2023-07-01
703 - Add safe helper `availableParallelism()` to help sizing the pool.
707 - Ensure message handler is only registered in worker.
709 ## [2.6.5] - 2023-06-27
713 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
717 - Artificial version bump to 2.6.5 to workaround publication issue.
718 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
719 - Ensure pool event is emitted before task error promise rejection.
720 - Fix queued tasks count computation.
724 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
726 ## [2.6.4] - 2023-06-27
730 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
734 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
735 - Ensure pool event is emitted before task error promise rejection.
736 - Fix queued tasks count computation.
740 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
742 ## [2.6.3] - 2023-06-19
746 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
747 - Update strategies internals after statistics computation.
751 - Optimize O(1) queue implementation.
753 ## [2.6.2] - 2023-06-12
757 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
759 ## [2.6.1] - 2023-06-10
763 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
767 - Fix average statistics computation: ensure failed tasks are not accounted.
769 ## [2.6.0] - 2023-06-09
773 - Add `LEAST_ELU` worker choice strategy (experimental).
774 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
778 - Refactor pool worker node usage internals.
779 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
780 - Breaking change: pool information `info` property object fields have been renamed.
784 - Fix wait time accounting.
785 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
786 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
788 ## [2.5.4] - 2023-06-07
792 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
796 - Compute statistics at the worker level only if needed.
797 - Add `worker_threads` options to thread pool options.
801 - Make the `LEAST_BUSY` strategy only relies on task runtime.
803 ## [2.5.3] - 2023-06-04
807 - Refine pool information content.
808 - Limit pool internals public exposure.
810 ## [2.5.2] - 2023-06-02
814 - Add `taskError` pool event for task execution error.
815 - Add pool information `info` property to pool.
816 - Emit pool information on `busy` and `full` pool events.
818 ## [2.5.1] - 2023-06-01
822 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
823 - Add `error` pool event for uncaught worker error.
825 ## [2.5.0] - 2023-05-31
829 - Switch pool event emitter to `EventEmitterAsyncResource`.
830 - Add tasks wait time accounting in per worker tasks usage.
831 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
835 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
837 ## [2.4.14] - 2023-05-09
841 - Ensure no undefined task runtime can land in the tasks history.
842 - Fix median computation implementation once again.
846 - Unit tests for median and queue implementations.
848 ## [2.4.13] - 2023-05-08
852 - Fix worker choice strategy options validation.
853 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
855 ## [2.4.12] - 2023-05-06
859 - Support multiple task functions per worker.
860 - Add custom worker weights support to worker choice strategies options.
864 - Use O(1) queue implementation for tasks queueing.
868 - Fix median computation implementation.
869 - Fix fair share worker choice strategy internals update.
871 ## [2.4.11] - 2023-04-23
875 - Optimize free worker finding in worker choice strategies.
877 ## [2.4.10] - 2023-04-15
881 - Fix typescript type definition for task function: ensure the input data is optional.
882 - Fix typescript type definition for pool execute(): ensure the input data is optional.
884 ## [2.4.9] - 2023-04-15
888 - Add tasks queue enablement runtime setter to pool.
889 - Add tasks queue options runtime setter to pool.
890 - Add worker choice strategy options runtime setter to pool.
894 - Remove the tasks queuing experimental status.
898 - Fix task function type definition and validation.
899 - Fix worker choice strategy options handling.
901 ## [2.4.8] - 2023-04-12
905 - Fix message between main worker and worker type definition for tasks.
906 - Fix code documentation.
908 ## [2.4.7] - 2023-04-11
912 - Add worker tasks queue options to pool options.
916 - Fix missing documentation.
918 ## [2.4.6] - 2023-04-10
922 - Ensure one task at a time is executed per worker with tasks queueing enabled.
923 - Properly count worker executing tasks with tasks queueing enabled.
925 ## [2.4.5] - 2023-04-09
929 - Use monotonic high resolution timer for worker tasks runtime.
930 - Add worker tasks median runtime to statistics.
931 - Add worker tasks queue (experimental).
933 ## [2.4.4] - 2023-04-07
937 - Add `PoolEvents` enumeration and `PoolEvent` type.
941 - Destroy worker only on alive check.
943 ## [2.4.3] - 2023-04-07
947 - Fix typedoc generation with inheritance.
949 ## [2.4.2] - 2023-04-06
953 - Add `full` event to dynamic pool.
954 - Keep worker choice strategy in memory for conditional reuse.
958 - Fix possible negative worker key at worker removal in worker choice strategies.
960 ## [2.4.1] - 2023-04-05
964 - Optimize worker choice strategy for dynamic pool.
968 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
970 ## [2.4.0] - 2023-04-04
974 - Add `LESS_BUSY` worker choice strategy.
978 - Optimize worker storage in pool.
979 - Optimize worker alive status check.
980 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
981 - Optimize `LESS_USED` worker choice strategy.
982 - Update benchmark versus external threads pools.
983 - Optimize tasks usage statistics requirements for worker choice strategy.
987 - Ensure trimmable characters are checked at pool initialization.
988 - Fix message id integer overflow.
989 - Fix pool worker removal in worker choice strategy internals.
990 - Fix package publication with pnpm.
992 ## [2.4.0-3] - 2023-04-04
996 - Add `LESS_BUSY` worker choice strategy.
1000 - Optimize worker storage in pool.
1001 - Optimize worker alive status check.
1002 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1003 - Optimize `LESS_USED` worker choice strategy.
1004 - Update benchmark versus external threads pools.
1008 - Ensure trimmable characters are checked at pool initialization.
1009 - Fix message id integer overflow.
1010 - Fix pool worker removal in worker choice strategy internals.
1011 - Fix package publication with pnpm.
1013 ## [2.4.0-2] - 2023-04-03
1017 - Add `LESS_BUSY` worker choice strategy.
1021 - Optimize worker storage in pool.
1022 - Optimize worker alive status check.
1023 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1024 - Optimize `LESS_USED` worker choice strategy.
1028 - Ensure trimmable characters are checked at pool initialization.
1029 - Fix message id integer overflow.
1030 - Fix pool worker removal in worker choice strategy internals.
1031 - Fix package publication with pnpm.
1033 ## [2.4.0-1] - 2023-04-03
1037 - Add `LESS_BUSY` worker choice strategy.
1041 - Optimize worker storage in pool.
1042 - Optimize worker alive status check.
1043 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1044 - Optimize `LESS_USED` worker choice strategy.
1048 - Ensure trimmable characters are checked at pool initialization.
1049 - Fix message id integer overflow.
1050 - Fix pool worker removal in worker choice strategy internals.
1052 ## [2.4.0-0] - 2023-04-03
1056 - Add `LESS_BUSY` worker choice strategy.
1060 - Optimize worker storage in pool.
1061 - Optimize worker alive status check.
1062 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1063 - Optimize `LESS_USED` worker choice strategy.
1067 - Ensure trimmable characters are checked at pool initialization.
1068 - Fix message id integer overflow.
1069 - Fix pool worker removal in worker choice strategy internals.
1071 ## [2.3.10] - 2023-03-18
1075 - Fix package.json `exports` syntax for ESM and CommonJS.
1079 - Permit SemVer pre-release publication.
1081 ## [2.3.10-2] - 2023-03-18
1085 - Fix package.json `exports` syntax for ESM and CommonJS.
1087 ## [2.3.10-1] - 2023-03-18
1091 - Permit SemVer pre-release publication.
1093 ## [2.3.10-0] - 2023-03-18
1097 - Fix package.json `exports` syntax for ESM and CommonJS.
1099 ## [2.3.9] - 2023-03-18
1103 - Introduce ESM module support along with CommonJS one.
1107 - Fix brown paper bag bug referencing the same object literal.
1109 ## [2.3.8] - 2023-03-18
1113 - Switch internal benchmarking code to benny.
1114 - Switch to TypeScript 5.x.x.
1115 - Switch rollup bundler plugins to core ones.
1116 - Switch to TSDoc syntax.
1117 - Enforce conventional commits.
1121 - Fix random integer generator.
1122 - Fix worker choice strategy pool type identification at initialization.
1124 ## [2.3.7] - 2022-10-23
1128 - Switch to open collective FOSS project funding platform.
1129 - Switch to ts-standard linter configuration on TypeScript code.
1133 - Fixed missing async on pool execute method.
1134 - Fixed typing in TypeScript example.
1135 - Fixed types in unit tests.
1137 ## [2.3.6] - 2022-10-22
1141 - Cleanup pool attributes and methods.
1142 - Refine error types thrown.
1146 - Fix continuous integration build on windows.
1147 - Fix code coverage reporting by using c8 instead of nyc.
1149 ## [2.3.5] - 2022-10-21
1153 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
1154 - Optimize tasks usage lookup implementation.
1158 - Fix missed pool event emitter type export.
1159 - Fix typedoc documentation generation.
1161 ## [2.3.4] - 2022-10-17
1165 - Fully automate release process with release-it.
1169 - Optimize fair share task scheduling algorithm implementation.
1170 - Update benchmark versus external pools results with latest version.
1172 ## [2.3.3] - 2022-10-15
1176 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
1178 ## [2.3.2] - 2022-10-14
1182 - Optimize fair share worker selection strategy implementation.
1186 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
1188 ## [2.3.1] - 2022-10-13
1192 - Pool worker choice strategies:
1193 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
1194 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
1196 ## [2.2.2] - 2022-10-09
1200 - Fixed `README.md` file.
1202 ## [2.2.1] - 2022-10-08
1206 - Dynamic worker choice strategy change at runtime.
1208 ## [2.2.0] - 2022-01-05
1210 ### Breaking Changes
1212 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
1214 ## [2.1.0] - 2021-08-29
1218 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
1220 ### Breaking Changes
1222 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
1223 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
1224 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
1225 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
1227 ## [2.0.2] - 2021-05-12
1231 - Fix `busy` event emission on fixed pool type
1233 ## [2.0.1] - 2021-03-16
1237 - Check if pool options are properly set.
1238 - `busy` event is emitted on all pool types.
1240 ## [2.0.0] - 2021-03-01
1244 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1246 ### Breaking Changes
1248 - `FullPool` event is now renamed to `busy`.
1249 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1250 _Find more details on our JSDoc._
1252 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1254 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1256 ### Pool options types declaration merge
1258 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1260 #### New `export` strategy
1264 const DynamicThreadPool = require('poolifier/lib/dynamic')
1266 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1269 But you should always prefer just using
1272 const { DynamicThreadPool } = require('poolifier')
1275 #### New type definitions for input data and response
1277 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1278 _This is not a limitation by poolifier but Node.js._
1280 #### Public property replacements
1282 `numWorkers` property is now `numberOfWorkers`
1284 #### Internal (protected) properties and methods renaming
1286 These properties are not intended for end users
1288 - `id` => `nextMessageId`
1290 These methods are not intended for end users
1292 - `_chooseWorker` => `chooseWorker`
1293 - `_newWorker` => `createWorker`
1294 - `_execute` => `internalExecute`
1295 - `_chooseWorker` => `chooseWorker`
1296 - `_checkAlive` => `checkAlive`
1298 - `_runAsync` => `runAsync`
1300 ## [1.1.0] - 2020-05-21
1304 - ThreadWorker support async functions as option
1305 - Various external library patches
1307 ## [1.0.0] - 2020-01-24
1311 - FixedThreadPool implementation
1312 - DynamicThreadPool implementation
1313 - WorkerThread implementation to improve developer experience