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 ## [3.1.20] - 2024-02-11
14 - Ensure `worker_threads` workers are unreferenced at termination.
16 ## [3.1.19] - 2024-01-16
20 - Fix possible null exception at task finishing handling.
24 - Optimize Deque implementation to improve tasks queueing performance.
26 ## [3.1.18] - 2024-01-06
30 - Fix dynamic pool with minimum number of workers set to zero: [#1748](https://github.com/poolifier/poolifier/issues/1748).
32 ## [3.1.17] - 2024-01-05
36 - Improve performance by clean up unneeded condition checks on hot code paths.
38 ## [3.1.16] - 2024-01-03
42 - Add missing type to TS type definitions.
44 ## [3.1.15] - 2024-01-02
48 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
50 ## [3.1.15-0] - 2024-01-02
54 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
56 ## [3.1.14] - 2024-01-01
60 - Properly handle dynamic pool with zero minimum size.
62 ## [3.1.13] - 2023-12-30
66 - Reduce branching in several hot code paths.
67 - Use faster object cloning implementation.
69 ## [3.1.12] - 2023-12-27
73 - Fix tasks redistribution triggers at pool destroying.
77 - Switch TypeScript module resolution to Node16.
79 ## [3.1.12-0] - 2023-12-27
83 - Fix tasks redistribution triggers at pool destroying.
85 ## [3.1.11] - 2023-12-24
89 - Avoid worker node cross tasks stealing.
90 - Ensure only half the pool worker nodes can steal tasks.
92 ## [3.1.10] - 2023-12-23
96 - Avoid useless branching on pool type.
98 ## [3.1.9] - 2023-12-22
102 - Readd ThreadPoolOptions and ClusterPoolOptions TS type aliases to PoolOptions.
104 ## [3.1.8] - 2023-12-21
108 - Fix default worker weight computation.
109 - Fix possible null exception at pool destroying.
111 ## [3.1.7] - 2023-12-20
115 - Ensure worker choice strategies implementation wait for worker node readiness: [#1748](https://github.com/poolifier/poolifier/issues/1748).
117 ## [3.1.6] - 2023-12-18
121 - Fix pool destroying with tasks queuing enabled.
123 ## [3.1.5] - 2023-12-18
127 - Add queued tasks end timeout support to worker node termination.
129 ## [3.1.4] - 2023-12-18
133 - Make more robust the fix for possible null exception at handling task execution response.
135 ## [3.1.3] - 2023-12-17
139 - Fix possible null exception at handling task execution response.
141 ## [3.1.2] - 2023-12-17
145 - Wait for queued tasks to end at worker node termination.
147 ## [3.1.1] - 2023-12-16
151 - Fix pool options TS type definition.
153 ## [3.1.0] - 2023-12-16
157 - TypeScript breaking change: merge ThreadPoolOptions and ClusterPoolOptions types into PoolOptions type.
159 ## [3.0.14] - 2023-12-13
163 - Fix possible null exception with worker_threads pools.
165 ## [3.0.13] - 2023-12-12
169 - Ensure worker choice strategy wait for worker nodes readiness.
173 - Remove infinite retries support in worker choice strategy to avoid configuration leading to possible infinite recursion or loop.
175 ## [3.0.12] - 2023-12-12
179 - Add infinite retries support in worker choice strategy.
181 ## [3.0.11] - 2023-12-11
185 - Ensure pool asynchronous resource properly track tasks execution.
187 ## [3.0.10] - 2023-12-08
191 - Add a fastpath when tasks stealing or redistribution is impossible.
193 ## [3.0.9] - 2023-11-26
197 - Remove all pool events listener at pool destroying.
198 - Remove all worker node events listener at worker node destroying.
199 - Fix worker node event emitter listeners handling memory leak at pool options runtime change.
201 ## [3.0.8] - 2023-11-25
205 - Ensure continuous tasks stealing on idle start at worker node idling.
207 ## [3.0.7] - 2023-11-24
211 - Make continuous tasks stealing start at worker node idling.
213 ## [3.0.6] - 2023-11-24
217 - Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
218 - Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.
220 ## [3.0.5] - 2023-10-27
224 - Ensure pool `ready` event can be emitted only once.
226 ## [3.0.4] - 2023-10-20
230 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
231 - Use builtin retry mechanism in worker choice strategies instead of custom one.
233 ## [3.0.3] - 2023-10-19
237 - Avoid null exception at sending message to worker.
238 - Avoid null exception at checking worker node readiness.
240 ## [3.0.2] - 2023-10-17
244 - 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).
246 ## [3.0.1] - 2023-10-16
250 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
254 - Switch the worker node eventing code to `EventTarget` API.
256 ## [3.0.0] - 2023-10-08
260 - Remove Node.js 16.x.x (EOL) support.
262 ## [2.7.5] - 2023-10-03
266 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
268 ## [2.7.4] - 2023-09-25
272 - Fix source maps (bundler issue).
274 ## [2.7.3] - 2023-09-24
278 - Convert pool event emitter to event emitter async resource.
280 ## [2.7.2] - 2023-09-23
284 - Add source maps to npm package to ease debugging.
288 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
290 ## [2.7.1] - 2023-09-20
294 - Ensure worker message listener used one time are removed after usage.
296 ## [2.7.0] - 2023-09-19
300 - Fix task stealing related tasks queue options handling at runtime.
304 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
308 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
309 - Stricter worker constructor arguments validation.
311 ## [2.6.45] - 2023-09-17
315 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
319 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
320 - Add `start()` method to pool API to start the minimum number of workers.
321 - 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.
322 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
324 ## [2.6.44] - 2023-09-08
328 - Use a dedicated PAT to publish on GitHub packages registry.
332 - Publish on GitHub packages registry on release.
336 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
338 ## [2.6.43] - 2023-09-08
342 - Publish on GitHub packages registry on release.
346 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
348 ## [2.6.42] - 2023-09-06
352 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
354 ## [2.6.41] - 2023-09-03
358 - Optimize worker choice strategies implementation.
360 ## [2.6.40] - 2023-09-01
364 - Do not pre-choose in WRR worker choice strategy to avoid bias.
365 - Avoid array out of bound in worker choice strategies after worker node removal.
367 ## [2.6.39] - 2023-08-30
371 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
373 ## [2.6.38] - 2023-08-30
377 - Bundle typescript types declaration into one file.
381 - Improve interleaved weighted round robin worker choice strategy implementation.
383 ## [2.6.37] - 2023-08-28
387 - Ensure unused worker usage statistics are deleted at runtime.
391 - Rename worker choice strategy options `choiceRetries` to `retries`.
392 - Avoid unnecessary branching in worker choice strategies.
394 ## [2.6.36] - 2023-08-27
398 - Fix pool `execute()` arguments check.
402 - Make continuous tasks stealing algorithm less aggressive.
403 - Fine tune tasks stealing algorithm under back pressure.
405 ## [2.6.35] - 2023-08-25
409 - Don't account worker usage statistics for tasks that have failed.
410 - Fix pool information runtime and wait time median computation.
414 - Update simple moving average implementation to use a circular buffer.
415 - Update simple moving median implementation to use a circular buffer.
416 - Account for stolen tasks in worker usage statistics and pool information.
420 - Continuous tasks stealing algorithm.
422 ## [2.6.34] - 2023-08-24
426 - Avoid cascading tasks stealing under back pressure.
430 - Add fastpath to queued tasks rescheduling.
432 ## [2.6.33] - 2023-08-24
436 - Fix queued tasks rescheduling.
440 - Rename tasks queue options `queueMaxSize` to `size`.
444 - Task stealing scheduling algorithm if tasks queueing is enabled.
446 ## [2.6.32] - 2023-08-23
450 - Ensure no task can be executed when the pool is destroyed.
454 - Add `queueMaxSize` option to tasks queue options.
455 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
456 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
458 ## [2.6.31] - 2023-08-20
462 - Fix worker choice strategy retries mechanism in some edge cases.
466 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
467 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
469 ## [2.6.30] - 2023-08-19
473 - Ensure pool event `backPressure` is emitted.
474 - Ensure pool event `full` is emitted only once.
475 - Ensure worker node cannot be instantiated without proper arguments.
477 ## [2.6.29] - 2023-08-18
481 - Fix race condition between readiness and task functions worker message handling at startup.
482 - Fix duplicate task function worker usage statistics computation per task function.
483 - Update task function worker usage statistics if and only if there's at least two different task functions.
484 - Fix race condition at task function worker usage executing task computation leading to negative value.
488 - 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).
489 - Use back pressure detection in worker choice strategies.
490 - Add worker choice strategies retries mechanism if no worker is eligible.
492 ## [2.6.28] - 2023-08-16
496 - Ensure pool workers are properly initialized.
500 - HTTP server pool examples: express-cluster, express-hybrid.
504 - Remove now useless branching in worker hot code path.
506 ## [2.6.27] - 2023-08-15
510 - Add `KillHandler` type definition to exported types.
514 - Add `destroy` event to pool API.
516 ## [2.6.26] - 2023-08-15
520 - Add kill handler to worker options allowing to execute custom code when worker is killed.
521 - Add `listTaskFunctions()` method to pool API.
522 - SMTP client pool example: nodemailer.
524 ## [2.6.25] - 2023-08-13
528 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
529 - WebSocket server pool examples: ws-cluster, ws-hybrid.
531 ## [2.6.24] - 2023-08-12
535 - Add array of transferable objects to the `execute()` method arguments.
536 - WebSocket server pool examples: ws-worker_threads.
538 ## [2.6.23] - 2023-08-11
542 - 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.
546 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
547 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
549 ## [2.6.22] - 2023-08-10
553 - Add missing `types` field to package.json `exports`.
557 - Structure markdown documentation (PR #811).
559 ## [2.6.21] - 2023-08-03
563 - Improve code documentation.
564 - Code refactoring and cleanup for better maintainability and readability.
566 ## [2.6.20] - 2023-07-21
570 - Fix queued tasks redistribution on error task execution starvation.
571 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
575 - Drastically reduce lookups by worker in the worker nodes.
577 ## [2.6.19] - 2023-07-20
581 - Dedicated internal communication channel for worker_threads pools.
583 ## [2.6.18] - 2023-07-19
587 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
589 ## [2.6.17] - 2023-07-16
593 - Add `listTaskFunctions()` method to worker API.
595 ## [2.6.16] - 2023-07-12
599 - Fix pool startup detection.
600 - Fix worker task functions handling.
602 ## [2.6.15] - 2023-07-11
606 - Take into account worker node readiness in worker choice strategies.
608 ## [2.6.14] - 2023-07-10
612 - Fix task function statistics tracking.
614 ## [2.6.13] - 2023-07-10
618 - Add per task function statistics tracking.
619 - Add public methods to manipulate the worker task functions at runtime.
621 ## [2.6.12] - 2023-07-09
625 - Workaround import issue with `node:os` module in node 16.x.x.
627 ## [2.6.11] - 2023-07-09
631 - Fix pool readiness semantic.
633 ## [2.6.10] - 2023-07-08
637 - Ensure workers are not recreated on error at pool startup.
641 - Add `ready` and `strategy` fields to pool information.
642 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
643 - Add dynamic pool sizing checks.
645 ## [2.6.9] - 2023-07-07
649 - Recreate the right worker type on uncaught exception.
653 - Add minimum and maximum to internal measurement statistics.
654 - Add `runTime` and `waitTime` to pool information.
655 - Check worker inactive time only on dynamic worker.
657 ## [2.6.8] - 2023-07-03
661 - Brown paper bag release to fix version handling in pool information.
663 ## [2.6.7] - 2023-07-03
667 - Ensure worker queued tasks at error are reassigned to other pool workers.
671 - Add pool `utilization` ratio to pool information.
672 - Add `version` to pool information.
673 - Add worker information to worker nodes.
675 ## [2.6.6] - 2023-07-01
679 - Add safe helper `availableParallelism()` to help sizing the pool.
683 - Ensure message handler is only registered in worker.
685 ## [2.6.5] - 2023-06-27
689 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
693 - Artificial version bump to 2.6.5 to workaround publication issue.
694 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
695 - Ensure pool event is emitted before task error promise rejection.
696 - Fix queued tasks count computation.
700 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
702 ## [2.6.4] - 2023-06-27
706 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
710 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
711 - Ensure pool event is emitted before task error promise rejection.
712 - Fix queued tasks count computation.
716 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
718 ## [2.6.3] - 2023-06-19
722 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
723 - Update strategies internals after statistics computation.
727 - Optimize O(1) queue implementation.
729 ## [2.6.2] - 2023-06-12
733 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
735 ## [2.6.1] - 2023-06-10
739 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
743 - Fix average statistics computation: ensure failed tasks are not accounted.
745 ## [2.6.0] - 2023-06-09
749 - Add `LEAST_ELU` worker choice strategy (experimental).
750 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
754 - Refactor pool worker node usage internals.
755 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
756 - Breaking change: pool information `info` property object fields have been renamed.
760 - Fix wait time accounting.
761 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
762 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
764 ## [2.5.4] - 2023-06-07
768 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
772 - Compute statistics at the worker level only if needed.
773 - Add `worker_threads` options to thread pool options.
777 - Make the `LEAST_BUSY` strategy only relies on task runtime.
779 ## [2.5.3] - 2023-06-04
783 - Refine pool information content.
784 - Limit pool internals public exposure.
786 ## [2.5.2] - 2023-06-02
790 - Add `taskError` pool event for task execution error.
791 - Add pool information `info` property to pool.
792 - Emit pool information on `busy` and `full` pool events.
794 ## [2.5.1] - 2023-06-01
798 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
799 - Add `error` pool event for uncaught worker error.
801 ## [2.5.0] - 2023-05-31
805 - Switch pool event emitter to `EventEmitterAsyncResource`.
806 - Add tasks wait time accounting in per worker tasks usage.
807 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
811 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
813 ## [2.4.14] - 2023-05-09
817 - Ensure no undefined task runtime can land in the tasks history.
818 - Fix median computation implementation once again.
822 - Unit tests for median and queue implementations.
824 ## [2.4.13] - 2023-05-08
828 - Fix worker choice strategy options validation.
829 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
831 ## [2.4.12] - 2023-05-06
835 - Support multiple task functions per worker.
836 - Add custom worker weights support to worker choice strategies options.
840 - Use O(1) queue implementation for tasks queueing.
844 - Fix median computation implementation.
845 - Fix fair share worker choice strategy internals update.
847 ## [2.4.11] - 2023-04-23
851 - Optimize free worker finding in worker choice strategies.
853 ## [2.4.10] - 2023-04-15
857 - Fix typescript type definition for task function: ensure the input data is optional.
858 - Fix typescript type definition for pool execute(): ensure the input data is optional.
860 ## [2.4.9] - 2023-04-15
864 - Add tasks queue enablement runtime setter to pool.
865 - Add tasks queue options runtime setter to pool.
866 - Add worker choice strategy options runtime setter to pool.
870 - Remove the tasks queuing experimental status.
874 - Fix task function type definition and validation.
875 - Fix worker choice strategy options handling.
877 ## [2.4.8] - 2023-04-12
881 - Fix message between main worker and worker type definition for tasks.
882 - Fix code documentation.
884 ## [2.4.7] - 2023-04-11
888 - Add worker tasks queue options to pool options.
892 - Fix missing documentation.
894 ## [2.4.6] - 2023-04-10
898 - Ensure one task at a time is executed per worker with tasks queueing enabled.
899 - Properly count worker executing tasks with tasks queueing enabled.
901 ## [2.4.5] - 2023-04-09
905 - Use monotonic high resolution timer for worker tasks runtime.
906 - Add worker tasks median runtime to statistics.
907 - Add worker tasks queue (experimental).
909 ## [2.4.4] - 2023-04-07
913 - Add `PoolEvents` enumeration and `PoolEvent` type.
917 - Destroy worker only on alive check.
919 ## [2.4.3] - 2023-04-07
923 - Fix typedoc generation with inheritance.
925 ## [2.4.2] - 2023-04-06
929 - Add `full` event to dynamic pool.
930 - Keep worker choice strategy in memory for conditional reuse.
934 - Fix possible negative worker key at worker removal in worker choice strategies.
936 ## [2.4.1] - 2023-04-05
940 - Optimize worker choice strategy for dynamic pool.
944 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
946 ## [2.4.0] - 2023-04-04
950 - Add `LESS_BUSY` worker choice strategy.
954 - Optimize worker storage in pool.
955 - Optimize worker alive status check.
956 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
957 - Optimize `LESS_USED` worker choice strategy.
958 - Update benchmark versus external threads pools.
959 - Optimize tasks usage statistics requirements for worker choice strategy.
963 - Ensure trimmable characters are checked at pool initialization.
964 - Fix message id integer overflow.
965 - Fix pool worker removal in worker choice strategy internals.
966 - Fix package publication with pnpm.
968 ## [2.4.0-3] - 2023-04-04
972 - Add `LESS_BUSY` worker choice strategy.
976 - Optimize worker storage in pool.
977 - Optimize worker alive status check.
978 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
979 - Optimize `LESS_USED` worker choice strategy.
980 - Update benchmark versus external threads pools.
984 - Ensure trimmable characters are checked at pool initialization.
985 - Fix message id integer overflow.
986 - Fix pool worker removal in worker choice strategy internals.
987 - Fix package publication with pnpm.
989 ## [2.4.0-2] - 2023-04-03
993 - Add `LESS_BUSY` worker choice strategy.
997 - Optimize worker storage in pool.
998 - Optimize worker alive status check.
999 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1000 - Optimize `LESS_USED` worker choice strategy.
1004 - Ensure trimmable characters are checked at pool initialization.
1005 - Fix message id integer overflow.
1006 - Fix pool worker removal in worker choice strategy internals.
1007 - Fix package publication with pnpm.
1009 ## [2.4.0-1] - 2023-04-03
1013 - Add `LESS_BUSY` worker choice strategy.
1017 - Optimize worker storage in pool.
1018 - Optimize worker alive status check.
1019 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1020 - Optimize `LESS_USED` worker choice strategy.
1024 - Ensure trimmable characters are checked at pool initialization.
1025 - Fix message id integer overflow.
1026 - Fix pool worker removal in worker choice strategy internals.
1028 ## [2.4.0-0] - 2023-04-03
1032 - Add `LESS_BUSY` worker choice strategy.
1036 - Optimize worker storage in pool.
1037 - Optimize worker alive status check.
1038 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1039 - Optimize `LESS_USED` worker choice strategy.
1043 - Ensure trimmable characters are checked at pool initialization.
1044 - Fix message id integer overflow.
1045 - Fix pool worker removal in worker choice strategy internals.
1047 ## [2.3.10] - 2023-03-18
1051 - Fix package.json `exports` syntax for ESM and CommonJS.
1055 - Permit SemVer pre-release publication.
1057 ## [2.3.10-2] - 2023-03-18
1061 - Fix package.json `exports` syntax for ESM and CommonJS.
1063 ## [2.3.10-1] - 2023-03-18
1067 - Permit SemVer pre-release publication.
1069 ## [2.3.10-0] - 2023-03-18
1073 - Fix package.json `exports` syntax for ESM and CommonJS.
1075 ## [2.3.9] - 2023-03-18
1079 - Introduce ESM module support along with CommonJS one.
1083 - Fix brown paper bag bug referencing the same object literal.
1085 ## [2.3.8] - 2023-03-18
1089 - Switch internal benchmarking code to benny.
1090 - Switch to TypeScript 5.x.x.
1091 - Switch rollup bundler plugins to core ones.
1092 - Switch to TSDoc syntax.
1093 - Enforce conventional commits.
1097 - Fix random integer generator.
1098 - Fix worker choice strategy pool type identification at initialization.
1100 ## [2.3.7] - 2022-10-23
1104 - Switch to open collective FOSS project funding platform.
1105 - Switch to ts-standard linter configuration on TypeScript code.
1109 - Fixed missing async on pool execute method.
1110 - Fixed typing in TypeScript example.
1111 - Fixed types in unit tests.
1113 ## [2.3.6] - 2022-10-22
1117 - Cleanup pool attributes and methods.
1118 - Refine error types thrown.
1122 - Fix continuous integration build on windows.
1123 - Fix code coverage reporting by using c8 instead of nyc.
1125 ## [2.3.5] - 2022-10-21
1129 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
1130 - Optimize tasks usage lookup implementation.
1134 - Fix missed pool event emitter type export.
1135 - Fix typedoc documentation generation.
1137 ## [2.3.4] - 2022-10-17
1141 - Fully automate release process with release-it.
1145 - Optimize fair share task scheduling algorithm implementation.
1146 - Update benchmark versus external pools results with latest version.
1148 ## [2.3.3] - 2022-10-15
1152 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
1154 ## [2.3.2] - 2022-10-14
1158 - Optimize fair share worker selection strategy implementation.
1162 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
1164 ## [2.3.1] - 2022-10-13
1168 - Pool worker choice strategies:
1169 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
1170 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
1172 ## [2.2.2] - 2022-10-09
1176 - Fixed `README.md` file.
1178 ## [2.2.1] - 2022-10-08
1182 - Dynamic worker choice strategy change at runtime.
1184 ## [2.2.0] - 2022-01-05
1186 ### Breaking Changes
1188 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
1190 ## [2.1.0] - 2021-08-29
1194 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
1196 ### Breaking Changes
1198 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
1199 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
1200 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
1201 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
1203 ## [2.0.2] - 2021-05-12
1207 - Fix `busy` event emission on fixed pool type
1209 ## [2.0.1] - 2021-03-16
1213 - Check if pool options are properly set.
1214 - `busy` event is emitted on all pool types.
1216 ## [2.0.0] - 2021-03-01
1220 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1222 ### Breaking Changes
1224 - `FullPool` event is now renamed to `busy`.
1225 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1226 _Find more details on our JSDoc._
1228 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1230 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1232 ### Pool options types declaration merge
1234 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1236 #### New `export` strategy
1240 const DynamicThreadPool = require('poolifier/lib/dynamic')
1242 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1245 But you should always prefer just using
1248 const { DynamicThreadPool } = require('poolifier')
1251 #### New type definitions for input data and response
1253 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1254 _This is not a limitation by poolifier but Node.js._
1256 #### Public property replacements
1258 `numWorkers` property is now `numberOfWorkers`
1260 #### Internal (protected) properties and methods renaming
1262 These properties are not intended for end users
1264 - `id` => `nextMessageId`
1266 These methods are not intended for end users
1268 - `_chooseWorker` => `chooseWorker`
1269 - `_newWorker` => `createWorker`
1270 - `_execute` => `internalExecute`
1271 - `_chooseWorker` => `chooseWorker`
1272 - `_checkAlive` => `checkAlive`
1274 - `_runAsync` => `runAsync`
1276 ## [1.1.0] - 2020-05-21
1280 - ThreadWorker support async functions as option
1281 - Various external library patches
1283 ## [1.0.0] - 2020-01-24
1287 - FixedThreadPool implementation
1288 - DynamicThreadPool implementation
1289 - WorkerThread implementation to improve developer experience