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 ## [3.1.27] - 2024-03-27
14 - Fix publishing on JSR, take 4.
16 ## [3.1.26] - 2024-03-27
20 - Fix publishing on JSR, take 3.
22 ## [3.1.25] - 2024-03-27
26 - Fix publishing on JSR, take 2.
28 ## [3.1.24] - 2024-03-27
32 - Fix publishing on JSR.
34 ## [3.1.23] - 2024-03-27
40 ## [3.1.22] - 2024-03-15
44 - Fix pool event emitter registered callbacks removal at `destroy()`.
46 ## [3.1.21] - 2024-02-22
50 - Fix null exception regression: [#1496](https://github.com/poolifier/poolifier/issues/1496).
52 ## [3.1.20] - 2024-02-11
56 - Ensure `worker_threads` workers are unreferenced at termination.
58 ## [3.1.19] - 2024-01-16
62 - Fix possible null exception at task finishing handling.
66 - Optimize Deque implementation to improve tasks queueing performance.
68 ## [3.1.18] - 2024-01-06
72 - Fix dynamic pool with minimum number of workers set to zero: [#1748](https://github.com/poolifier/poolifier/issues/1748).
74 ## [3.1.17] - 2024-01-05
78 - Improve performance by clean up unneeded condition checks on hot code paths.
80 ## [3.1.16] - 2024-01-03
84 - Add missing type to TS type definitions.
86 ## [3.1.15] - 2024-01-02
90 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
92 ## [3.1.15-0] - 2024-01-02
96 - Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).
98 ## [3.1.14] - 2024-01-01
102 - Properly handle dynamic pool with zero minimum size.
104 ## [3.1.13] - 2023-12-30
108 - Reduce branching in several hot code paths.
109 - Use faster object cloning implementation.
111 ## [3.1.12] - 2023-12-27
115 - Fix tasks redistribution triggers at pool destroying.
119 - Switch TypeScript module resolution to Node16.
121 ## [3.1.12-0] - 2023-12-27
125 - Fix tasks redistribution triggers at pool destroying.
127 ## [3.1.11] - 2023-12-24
131 - Avoid worker node cross tasks stealing.
132 - Ensure only half the pool worker nodes can steal tasks.
134 ## [3.1.10] - 2023-12-23
138 - Avoid useless branching on pool type.
140 ## [3.1.9] - 2023-12-22
144 - Readd ThreadPoolOptions and ClusterPoolOptions TS type aliases to PoolOptions.
146 ## [3.1.8] - 2023-12-21
150 - Fix default worker weight computation.
151 - Fix possible null exception at pool destroying.
153 ## [3.1.7] - 2023-12-20
157 - Ensure worker choice strategies implementation wait for worker node readiness: [#1748](https://github.com/poolifier/poolifier/issues/1748).
159 ## [3.1.6] - 2023-12-18
163 - Fix pool destroying with tasks queuing enabled.
165 ## [3.1.5] - 2023-12-18
169 - Add queued tasks end timeout support to worker node termination.
171 ## [3.1.4] - 2023-12-18
175 - Make more robust the fix for possible null exception at handling task execution response.
177 ## [3.1.3] - 2023-12-17
181 - Fix possible null exception at handling task execution response.
183 ## [3.1.2] - 2023-12-17
187 - Wait for queued tasks to end at worker node termination.
189 ## [3.1.1] - 2023-12-16
193 - Fix pool options TS type definition.
195 ## [3.1.0] - 2023-12-16
199 - TypeScript breaking change: merge ThreadPoolOptions and ClusterPoolOptions types into PoolOptions type.
201 ## [3.0.14] - 2023-12-13
205 - Fix possible null exception with worker_threads pools.
207 ## [3.0.13] - 2023-12-12
211 - Ensure worker choice strategy wait for worker nodes readiness.
215 - Remove infinite retries support in worker choice strategy to avoid configuration leading to possible infinite recursion or loop.
217 ## [3.0.12] - 2023-12-12
221 - Add infinite retries support in worker choice strategy.
223 ## [3.0.11] - 2023-12-11
227 - Ensure pool asynchronous resource properly track tasks execution.
229 ## [3.0.10] - 2023-12-08
233 - Add a fastpath when tasks stealing or redistribution is impossible.
235 ## [3.0.9] - 2023-11-26
239 - Remove all pool events listener at pool destroying.
240 - Remove all worker node events listener at worker node destroying.
241 - Fix worker node event emitter listeners handling memory leak at pool options runtime change.
243 ## [3.0.8] - 2023-11-25
247 - Ensure continuous tasks stealing on idle start at worker node idling.
249 ## [3.0.7] - 2023-11-24
253 - Make continuous tasks stealing start at worker node idling.
255 ## [3.0.6] - 2023-11-24
259 - Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
260 - Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.
262 ## [3.0.5] - 2023-10-27
266 - Ensure pool `ready` event can be emitted only once.
268 ## [3.0.4] - 2023-10-20
272 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
273 - Use builtin retry mechanism in worker choice strategies instead of custom one.
275 ## [3.0.3] - 2023-10-19
279 - Avoid null exception at sending message to worker.
280 - Avoid null exception at checking worker node readiness.
282 ## [3.0.2] - 2023-10-17
286 - 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).
288 ## [3.0.1] - 2023-10-16
292 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
296 - Switch the worker node eventing code to `EventTarget` API.
298 ## [3.0.0] - 2023-10-08
302 - Remove Node.js 16.x.x (EOL) support.
304 ## [2.7.5] - 2023-10-03
308 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
310 ## [2.7.4] - 2023-09-25
314 - Fix source maps (bundler issue).
316 ## [2.7.3] - 2023-09-24
320 - Convert pool event emitter to event emitter async resource.
322 ## [2.7.2] - 2023-09-23
326 - Add source maps to npm package to ease debugging.
330 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
332 ## [2.7.1] - 2023-09-20
336 - Ensure worker message listener used one time are removed after usage.
338 ## [2.7.0] - 2023-09-19
342 - Fix task stealing related tasks queue options handling at runtime.
346 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
350 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
351 - Stricter worker constructor arguments validation.
353 ## [2.6.45] - 2023-09-17
357 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
361 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
362 - Add `start()` method to pool API to start the minimum number of workers.
363 - 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.
364 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
366 ## [2.6.44] - 2023-09-08
370 - Use a dedicated PAT to publish on GitHub packages registry.
374 - Publish on GitHub packages registry on release.
378 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
380 ## [2.6.43] - 2023-09-08
384 - Publish on GitHub packages registry on release.
388 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
390 ## [2.6.42] - 2023-09-06
394 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
396 ## [2.6.41] - 2023-09-03
400 - Optimize worker choice strategies implementation.
402 ## [2.6.40] - 2023-09-01
406 - Do not pre-choose in WRR worker choice strategy to avoid bias.
407 - Avoid array out of bound in worker choice strategies after worker node removal.
409 ## [2.6.39] - 2023-08-30
413 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
415 ## [2.6.38] - 2023-08-30
419 - Bundle typescript types declaration into one file.
423 - Improve interleaved weighted round robin worker choice strategy implementation.
425 ## [2.6.37] - 2023-08-28
429 - Ensure unused worker usage statistics are deleted at runtime.
433 - Rename worker choice strategy options `choiceRetries` to `retries`.
434 - Avoid unnecessary branching in worker choice strategies.
436 ## [2.6.36] - 2023-08-27
440 - Fix pool `execute()` arguments check.
444 - Make continuous tasks stealing algorithm less aggressive.
445 - Fine tune tasks stealing algorithm under back pressure.
447 ## [2.6.35] - 2023-08-25
451 - Don't account worker usage statistics for tasks that have failed.
452 - Fix pool information runtime and wait time median computation.
456 - Update simple moving average implementation to use a circular buffer.
457 - Update simple moving median implementation to use a circular buffer.
458 - Account for stolen tasks in worker usage statistics and pool information.
462 - Continuous tasks stealing algorithm.
464 ## [2.6.34] - 2023-08-24
468 - Avoid cascading tasks stealing under back pressure.
472 - Add fastpath to queued tasks rescheduling.
474 ## [2.6.33] - 2023-08-24
478 - Fix queued tasks rescheduling.
482 - Rename tasks queue options `queueMaxSize` to `size`.
486 - Task stealing scheduling algorithm if tasks queueing is enabled.
488 ## [2.6.32] - 2023-08-23
492 - Ensure no task can be executed when the pool is destroyed.
496 - Add `queueMaxSize` option to tasks queue options.
497 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
498 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
500 ## [2.6.31] - 2023-08-20
504 - Fix worker choice strategy retries mechanism in some edge cases.
508 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
509 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
511 ## [2.6.30] - 2023-08-19
515 - Ensure pool event `backPressure` is emitted.
516 - Ensure pool event `full` is emitted only once.
517 - Ensure worker node cannot be instantiated without proper arguments.
519 ## [2.6.29] - 2023-08-18
523 - Fix race condition between readiness and task functions worker message handling at startup.
524 - Fix duplicate task function worker usage statistics computation per task function.
525 - Update task function worker usage statistics if and only if there's at least two different task functions.
526 - Fix race condition at task function worker usage executing task computation leading to negative value.
530 - 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).
531 - Use back pressure detection in worker choice strategies.
532 - Add worker choice strategies retries mechanism if no worker is eligible.
534 ## [2.6.28] - 2023-08-16
538 - Ensure pool workers are properly initialized.
542 - HTTP server pool examples: express-cluster, express-hybrid.
546 - Remove now useless branching in worker hot code path.
548 ## [2.6.27] - 2023-08-15
552 - Add `KillHandler` type definition to exported types.
556 - Add `destroy` event to pool API.
558 ## [2.6.26] - 2023-08-15
562 - Add kill handler to worker options allowing to execute custom code when worker is killed.
563 - Add `listTaskFunctions()` method to pool API.
564 - SMTP client pool example: nodemailer.
566 ## [2.6.25] - 2023-08-13
570 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
571 - WebSocket server pool examples: ws-cluster, ws-hybrid.
573 ## [2.6.24] - 2023-08-12
577 - Add array of transferable objects to the `execute()` method arguments.
578 - WebSocket server pool examples: ws-worker_threads.
580 ## [2.6.23] - 2023-08-11
584 - 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.
588 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
589 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
591 ## [2.6.22] - 2023-08-10
595 - Add missing `types` field to package.json `exports`.
599 - Structure markdown documentation (PR #811).
601 ## [2.6.21] - 2023-08-03
605 - Improve code documentation.
606 - Code refactoring and cleanup for better maintainability and readability.
608 ## [2.6.20] - 2023-07-21
612 - Fix queued tasks redistribution on error task execution starvation.
613 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
617 - Drastically reduce lookups by worker in the worker nodes.
619 ## [2.6.19] - 2023-07-20
623 - Dedicated internal communication channel for worker_threads pools.
625 ## [2.6.18] - 2023-07-19
629 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
631 ## [2.6.17] - 2023-07-16
635 - Add `listTaskFunctions()` method to worker API.
637 ## [2.6.16] - 2023-07-12
641 - Fix pool startup detection.
642 - Fix worker task functions handling.
644 ## [2.6.15] - 2023-07-11
648 - Take into account worker node readiness in worker choice strategies.
650 ## [2.6.14] - 2023-07-10
654 - Fix task function statistics tracking.
656 ## [2.6.13] - 2023-07-10
660 - Add per task function statistics tracking.
661 - Add public methods to manipulate the worker task functions at runtime.
663 ## [2.6.12] - 2023-07-09
667 - Workaround import issue with `node:os` module in node 16.x.x.
669 ## [2.6.11] - 2023-07-09
673 - Fix pool readiness semantic.
675 ## [2.6.10] - 2023-07-08
679 - Ensure workers are not recreated on error at pool startup.
683 - Add `ready` and `strategy` fields to pool information.
684 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
685 - Add dynamic pool sizing checks.
687 ## [2.6.9] - 2023-07-07
691 - Recreate the right worker type on uncaught exception.
695 - Add minimum and maximum to internal measurement statistics.
696 - Add `runTime` and `waitTime` to pool information.
697 - Check worker inactive time only on dynamic worker.
699 ## [2.6.8] - 2023-07-03
703 - Brown paper bag release to fix version handling in pool information.
705 ## [2.6.7] - 2023-07-03
709 - Ensure worker queued tasks at error are reassigned to other pool workers.
713 - Add pool `utilization` ratio to pool information.
714 - Add `version` to pool information.
715 - Add worker information to worker nodes.
717 ## [2.6.6] - 2023-07-01
721 - Add safe helper `availableParallelism()` to help sizing the pool.
725 - Ensure message handler is only registered in worker.
727 ## [2.6.5] - 2023-06-27
731 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
735 - Artificial version bump to 2.6.5 to workaround publication issue.
736 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
737 - Ensure pool event is emitted before task error promise rejection.
738 - Fix queued tasks count computation.
742 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
744 ## [2.6.4] - 2023-06-27
748 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
752 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
753 - Ensure pool event is emitted before task error promise rejection.
754 - Fix queued tasks count computation.
758 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
760 ## [2.6.3] - 2023-06-19
764 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
765 - Update strategies internals after statistics computation.
769 - Optimize O(1) queue implementation.
771 ## [2.6.2] - 2023-06-12
775 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
777 ## [2.6.1] - 2023-06-10
781 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
785 - Fix average statistics computation: ensure failed tasks are not accounted.
787 ## [2.6.0] - 2023-06-09
791 - Add `LEAST_ELU` worker choice strategy (experimental).
792 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
796 - Refactor pool worker node usage internals.
797 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
798 - Breaking change: pool information `info` property object fields have been renamed.
802 - Fix wait time accounting.
803 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
804 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
806 ## [2.5.4] - 2023-06-07
810 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
814 - Compute statistics at the worker level only if needed.
815 - Add `worker_threads` options to thread pool options.
819 - Make the `LEAST_BUSY` strategy only relies on task runtime.
821 ## [2.5.3] - 2023-06-04
825 - Refine pool information content.
826 - Limit pool internals public exposure.
828 ## [2.5.2] - 2023-06-02
832 - Add `taskError` pool event for task execution error.
833 - Add pool information `info` property to pool.
834 - Emit pool information on `busy` and `full` pool events.
836 ## [2.5.1] - 2023-06-01
840 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
841 - Add `error` pool event for uncaught worker error.
843 ## [2.5.0] - 2023-05-31
847 - Switch pool event emitter to `EventEmitterAsyncResource`.
848 - Add tasks wait time accounting in per worker tasks usage.
849 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
853 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
855 ## [2.4.14] - 2023-05-09
859 - Ensure no undefined task runtime can land in the tasks history.
860 - Fix median computation implementation once again.
864 - Unit tests for median and queue implementations.
866 ## [2.4.13] - 2023-05-08
870 - Fix worker choice strategy options validation.
871 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
873 ## [2.4.12] - 2023-05-06
877 - Support multiple task functions per worker.
878 - Add custom worker weights support to worker choice strategies options.
882 - Use O(1) queue implementation for tasks queueing.
886 - Fix median computation implementation.
887 - Fix fair share worker choice strategy internals update.
889 ## [2.4.11] - 2023-04-23
893 - Optimize free worker finding in worker choice strategies.
895 ## [2.4.10] - 2023-04-15
899 - Fix typescript type definition for task function: ensure the input data is optional.
900 - Fix typescript type definition for pool execute(): ensure the input data is optional.
902 ## [2.4.9] - 2023-04-15
906 - Add tasks queue enablement runtime setter to pool.
907 - Add tasks queue options runtime setter to pool.
908 - Add worker choice strategy options runtime setter to pool.
912 - Remove the tasks queuing experimental status.
916 - Fix task function type definition and validation.
917 - Fix worker choice strategy options handling.
919 ## [2.4.8] - 2023-04-12
923 - Fix message between main worker and worker type definition for tasks.
924 - Fix code documentation.
926 ## [2.4.7] - 2023-04-11
930 - Add worker tasks queue options to pool options.
934 - Fix missing documentation.
936 ## [2.4.6] - 2023-04-10
940 - Ensure one task at a time is executed per worker with tasks queueing enabled.
941 - Properly count worker executing tasks with tasks queueing enabled.
943 ## [2.4.5] - 2023-04-09
947 - Use monotonic high resolution timer for worker tasks runtime.
948 - Add worker tasks median runtime to statistics.
949 - Add worker tasks queue (experimental).
951 ## [2.4.4] - 2023-04-07
955 - Add `PoolEvents` enumeration and `PoolEvent` type.
959 - Destroy worker only on alive check.
961 ## [2.4.3] - 2023-04-07
965 - Fix typedoc generation with inheritance.
967 ## [2.4.2] - 2023-04-06
971 - Add `full` event to dynamic pool.
972 - Keep worker choice strategy in memory for conditional reuse.
976 - Fix possible negative worker key at worker removal in worker choice strategies.
978 ## [2.4.1] - 2023-04-05
982 - Optimize worker choice strategy for dynamic pool.
986 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
988 ## [2.4.0] - 2023-04-04
992 - Add `LESS_BUSY` worker choice strategy.
996 - Optimize worker storage in pool.
997 - Optimize worker alive status check.
998 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
999 - Optimize `LESS_USED` worker choice strategy.
1000 - Update benchmark versus external threads pools.
1001 - Optimize tasks usage statistics requirements for worker choice strategy.
1005 - Ensure trimmable characters are checked at pool initialization.
1006 - Fix message id integer overflow.
1007 - Fix pool worker removal in worker choice strategy internals.
1008 - Fix package publication with pnpm.
1010 ## [2.4.0-3] - 2023-04-04
1014 - Add `LESS_BUSY` worker choice strategy.
1018 - Optimize worker storage in pool.
1019 - Optimize worker alive status check.
1020 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1021 - Optimize `LESS_USED` worker choice strategy.
1022 - Update benchmark versus external threads pools.
1026 - Ensure trimmable characters are checked at pool initialization.
1027 - Fix message id integer overflow.
1028 - Fix pool worker removal in worker choice strategy internals.
1029 - Fix package publication with pnpm.
1031 ## [2.4.0-2] - 2023-04-03
1035 - Add `LESS_BUSY` worker choice strategy.
1039 - Optimize worker storage in pool.
1040 - Optimize worker alive status check.
1041 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1042 - Optimize `LESS_USED` worker choice strategy.
1046 - Ensure trimmable characters are checked at pool initialization.
1047 - Fix message id integer overflow.
1048 - Fix pool worker removal in worker choice strategy internals.
1049 - Fix package publication with pnpm.
1051 ## [2.4.0-1] - 2023-04-03
1055 - Add `LESS_BUSY` worker choice strategy.
1059 - Optimize worker storage in pool.
1060 - Optimize worker alive status check.
1061 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1062 - Optimize `LESS_USED` worker choice strategy.
1066 - Ensure trimmable characters are checked at pool initialization.
1067 - Fix message id integer overflow.
1068 - Fix pool worker removal in worker choice strategy internals.
1070 ## [2.4.0-0] - 2023-04-03
1074 - Add `LESS_BUSY` worker choice strategy.
1078 - Optimize worker storage in pool.
1079 - Optimize worker alive status check.
1080 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
1081 - Optimize `LESS_USED` worker choice strategy.
1085 - Ensure trimmable characters are checked at pool initialization.
1086 - Fix message id integer overflow.
1087 - Fix pool worker removal in worker choice strategy internals.
1089 ## [2.3.10] - 2023-03-18
1093 - Fix package.json `exports` syntax for ESM and CommonJS.
1097 - Permit SemVer pre-release publication.
1099 ## [2.3.10-2] - 2023-03-18
1103 - Fix package.json `exports` syntax for ESM and CommonJS.
1105 ## [2.3.10-1] - 2023-03-18
1109 - Permit SemVer pre-release publication.
1111 ## [2.3.10-0] - 2023-03-18
1115 - Fix package.json `exports` syntax for ESM and CommonJS.
1117 ## [2.3.9] - 2023-03-18
1121 - Introduce ESM module support along with CommonJS one.
1125 - Fix brown paper bag bug referencing the same object literal.
1127 ## [2.3.8] - 2023-03-18
1131 - Switch internal benchmarking code to benny.
1132 - Switch to TypeScript 5.x.x.
1133 - Switch rollup bundler plugins to core ones.
1134 - Switch to TSDoc syntax.
1135 - Enforce conventional commits.
1139 - Fix random integer generator.
1140 - Fix worker choice strategy pool type identification at initialization.
1142 ## [2.3.7] - 2022-10-23
1146 - Switch to open collective FOSS project funding platform.
1147 - Switch to ts-standard linter configuration on TypeScript code.
1151 - Fixed missing async on pool execute method.
1152 - Fixed typing in TypeScript example.
1153 - Fixed types in unit tests.
1155 ## [2.3.6] - 2022-10-22
1159 - Cleanup pool attributes and methods.
1160 - Refine error types thrown.
1164 - Fix continuous integration build on windows.
1165 - Fix code coverage reporting by using c8 instead of nyc.
1167 ## [2.3.5] - 2022-10-21
1171 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
1172 - Optimize tasks usage lookup implementation.
1176 - Fix missed pool event emitter type export.
1177 - Fix typedoc documentation generation.
1179 ## [2.3.4] - 2022-10-17
1183 - Fully automate release process with release-it.
1187 - Optimize fair share task scheduling algorithm implementation.
1188 - Update benchmark versus external pools results with latest version.
1190 ## [2.3.3] - 2022-10-15
1194 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
1196 ## [2.3.2] - 2022-10-14
1200 - Optimize fair share worker selection strategy implementation.
1204 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
1206 ## [2.3.1] - 2022-10-13
1210 - Pool worker choice strategies:
1211 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
1212 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
1214 ## [2.2.2] - 2022-10-09
1218 - Fixed `README.md` file.
1220 ## [2.2.1] - 2022-10-08
1224 - Dynamic worker choice strategy change at runtime.
1226 ## [2.2.0] - 2022-01-05
1228 ### Breaking Changes
1230 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
1232 ## [2.1.0] - 2021-08-29
1236 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
1238 ### Breaking Changes
1240 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
1241 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
1242 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
1243 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
1245 ## [2.0.2] - 2021-05-12
1249 - Fix `busy` event emission on fixed pool type
1251 ## [2.0.1] - 2021-03-16
1255 - Check if pool options are properly set.
1256 - `busy` event is emitted on all pool types.
1258 ## [2.0.0] - 2021-03-01
1262 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1264 ### Breaking Changes
1266 - `FullPool` event is now renamed to `busy`.
1267 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1268 _Find more details on our JSDoc._
1270 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1272 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1274 ### Pool options types declaration merge
1276 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1278 #### New `export` strategy
1282 const DynamicThreadPool = require('poolifier/lib/dynamic')
1284 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1287 But you should always prefer just using
1290 const { DynamicThreadPool } = require('poolifier')
1293 #### New type definitions for input data and response
1295 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1296 _This is not a limitation by poolifier but Node.js._
1298 #### Public property replacements
1300 `numWorkers` property is now `numberOfWorkers`
1302 #### Internal (protected) properties and methods renaming
1304 These properties are not intended for end users
1306 - `id` => `nextMessageId`
1308 These methods are not intended for end users
1310 - `_chooseWorker` => `chooseWorker`
1311 - `_newWorker` => `createWorker`
1312 - `_execute` => `internalExecute`
1313 - `_chooseWorker` => `chooseWorker`
1314 - `_checkAlive` => `checkAlive`
1316 - `_runAsync` => `runAsync`
1318 ## [1.1.0] - 2020-05-21
1322 - ThreadWorker support async functions as option
1323 - Various external library patches
1325 ## [1.0.0] - 2020-01-24
1329 - FixedThreadPool implementation
1330 - DynamicThreadPool implementation
1331 - WorkerThread implementation to improve developer experience