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).
12 - Ensure pool ready event can be emitted only once.
14 ## [3.0.4] - 2023-10-20
18 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
19 - Use builtin retry mechanism in worker choice strategies instead of custom one.
21 ## [3.0.3] - 2023-10-19
25 - Avoid null exception at sending message to worker.
26 - Avoid null exception at checking worker node readiness.
28 ## [3.0.2] - 2023-10-17
32 - 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).
34 ## [3.0.1] - 2023-10-16
38 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
42 - Switch the worker node eventing code to `EventTarget` API.
44 ## [3.0.0] - 2023-10-08
48 - Remove Node.js 16.x.x (EOL) support.
50 ## [2.7.5] - 2023-10-03
54 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
56 ## [2.7.4] - 2023-09-25
60 - Fix source maps (bundler issue).
62 ## [2.7.3] - 2023-09-24
66 - Convert pool event emitter to event emitter async resource.
68 ## [2.7.2] - 2023-09-23
72 - Add source maps to npm package to ease debugging.
76 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
78 ## [2.7.1] - 2023-09-20
82 - Ensure worker message listener used one time are removed after usage.
84 ## [2.7.0] - 2023-09-19
88 - Fix task stealing related tasks queue options handling at runtime.
92 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
96 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
97 - Stricter worker constructor arguments validation.
99 ## [2.6.45] - 2023-09-17
103 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
107 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
108 - Add `start()` method to pool API to start the minimum number of workers.
109 - 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.
110 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
112 ## [2.6.44] - 2023-09-08
116 - Use a dedicated PAT to publish on GitHub packages registry.
120 - Publish on GitHub packages registry on release.
124 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
126 ## [2.6.43] - 2023-09-08
130 - Publish on GitHub packages registry on release.
134 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
136 ## [2.6.42] - 2023-09-06
140 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
142 ## [2.6.41] - 2023-09-03
146 - Optimize worker choice strategies implementation.
148 ## [2.6.40] - 2023-09-01
152 - Do not pre-choose in WRR worker choice strategy to avoid bias.
153 - Avoid array out of bound in worker choice strategies after worker node removal.
155 ## [2.6.39] - 2023-08-30
159 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
161 ## [2.6.38] - 2023-08-30
165 - Bundle typescript types declaration into one file.
169 - Improve interleaved weighted round robin worker choice strategy implementation.
171 ## [2.6.37] - 2023-08-28
175 - Ensure unused worker usage statistics are deleted at runtime.
179 - Rename worker choice strategy options `choiceRetries` to `retries`.
180 - Avoid unnecessary branching in worker choice strategies.
182 ## [2.6.36] - 2023-08-27
186 - Fix pool `execute()` arguments check.
190 - Make continuous tasks stealing algorithm less aggressive.
191 - Fine tune tasks stealing algorithm under back pressure.
193 ## [2.6.35] - 2023-08-25
197 - Don't account worker usage statistics for tasks that have failed.
198 - Fix pool information runtime and wait time median computation.
202 - Update simple moving average implementation to use a circular buffer.
203 - Update simple moving median implementation to use a circular buffer.
204 - Account for stolen tasks in worker usage statistics and pool information.
208 - Continuous tasks stealing algorithm.
210 ## [2.6.34] - 2023-08-24
214 - Avoid cascading tasks stealing under back pressure.
218 - Add fastpath to queued tasks rescheduling.
220 ## [2.6.33] - 2023-08-24
224 - Fix queued tasks rescheduling.
228 - Rename tasks queue options `queueMaxSize` to `size`.
232 - Task stealing scheduling algorithm if tasks queueing is enabled.
234 ## [2.6.32] - 2023-08-23
238 - Ensure no task can be executed when the pool is destroyed.
242 - Add `queueMaxSize` option to tasks queue options.
243 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
244 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
246 ## [2.6.31] - 2023-08-20
250 - Fix worker choice strategy retries mechanism in some edge cases.
254 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
255 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
257 ## [2.6.30] - 2023-08-19
261 - Ensure pool event `backPressure` is emitted.
262 - Ensure pool event `full` is emitted only once.
263 - Ensure worker node cannot be instantiated without proper arguments.
265 ## [2.6.29] - 2023-08-18
269 - Fix race condition between ready and task functions worker message handling at startup.
270 - Fix duplicate task function worker usage statistics computation per task function.
271 - Update task function worker usage statistics if and only if there's at least two different task functions.
272 - Fix race condition at task function worker usage executing task computation leading to negative value.
276 - 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).
277 - Use back pressure detection in worker choice strategies.
278 - Add worker choice strategies retries mechanism if no worker is eligible.
280 ## [2.6.28] - 2023-08-16
284 - Ensure pool workers are properly initialized.
288 - HTTP server pool examples: express-cluster, express-hybrid.
292 - Remove now useless branching in worker hot code path.
294 ## [2.6.27] - 2023-08-15
298 - Add `KillHandler` type definition to exported types.
302 - Add `destroy` event to pool API.
304 ## [2.6.26] - 2023-08-15
308 - Add kill handler to worker options allowing to execute custom code when worker is killed.
309 - Add `listTaskFunctions()` method to pool API.
310 - SMTP client pool example: nodemailer.
312 ## [2.6.25] - 2023-08-13
316 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
317 - WebSocket server pool examples: ws-cluster, ws-hybrid.
319 ## [2.6.24] - 2023-08-12
323 - Add array of transferable objects to the `execute()` method arguments.
324 - WebSocket server pool examples: ws-worker_threads.
326 ## [2.6.23] - 2023-08-11
330 - 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.
334 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
335 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
337 ## [2.6.22] - 2023-08-10
341 - Add missing `types` field to package.json `exports`.
345 - Structure markdown documentation (PR #811).
347 ## [2.6.21] - 2023-08-03
351 - Improve code documentation.
352 - Code refactoring and cleanup for better maintainability and readability.
354 ## [2.6.20] - 2023-07-21
358 - Fix queued tasks redistribution on error task execution starvation.
359 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
363 - Drastically reduce lookups by worker in the worker nodes.
365 ## [2.6.19] - 2023-07-20
369 - Dedicated internal communication channel for worker_threads pools.
371 ## [2.6.18] - 2023-07-19
375 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
377 ## [2.6.17] - 2023-07-16
381 - Add `listTaskFunctions()` method to worker API.
383 ## [2.6.16] - 2023-07-12
387 - Fix pool startup detection.
388 - Fix worker task functions handling.
390 ## [2.6.15] - 2023-07-11
394 - Take into account worker node readiness in worker choice strategies.
396 ## [2.6.14] - 2023-07-10
400 - Fix task function statistics tracking.
402 ## [2.6.13] - 2023-07-10
406 - Add per task function statistics tracking.
407 - Add public methods to manipulate the worker task functions at runtime.
409 ## [2.6.12] - 2023-07-09
413 - Workaround import issue with `node:os` module in node 16.x.x.
415 ## [2.6.11] - 2023-07-09
419 - Fix pool readiness semantic.
421 ## [2.6.10] - 2023-07-08
425 - Ensure workers are not recreated on error at pool startup.
429 - Add `ready` and `strategy` fields to pool information.
430 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
431 - Add dynamic pool sizing checks.
433 ## [2.6.9] - 2023-07-07
437 - Recreate the right worker type on uncaught exception.
441 - Add minimum and maximum to internal measurement statistics.
442 - Add `runTime` and `waitTime` to pool information.
443 - Check worker inactive time only on dynamic worker.
445 ## [2.6.8] - 2023-07-03
449 - Brown paper bag release to fix version handling in pool information.
451 ## [2.6.7] - 2023-07-03
455 - Ensure worker queued tasks at error are reassigned to other pool workers.
459 - Add pool `utilization` ratio to pool information.
460 - Add `version` to pool information.
461 - Add worker information to worker nodes.
463 ## [2.6.6] - 2023-07-01
467 - Add safe helper `availableParallelism()` to help sizing the pool.
471 - Ensure message handler is only registered in worker.
473 ## [2.6.5] - 2023-06-27
477 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
481 - Artificial version bump to 2.6.5 to workaround publication issue.
482 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
483 - Ensure pool event is emitted before task error promise rejection.
484 - Fix queued tasks count computation.
488 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
490 ## [2.6.4] - 2023-06-27
494 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
498 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
499 - Ensure pool event is emitted before task error promise rejection.
500 - Fix queued tasks count computation.
504 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
506 ## [2.6.3] - 2023-06-19
510 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
511 - Update strategies internals after statistics computation.
515 - Optimize O(1) queue implementation.
517 ## [2.6.2] - 2023-06-12
521 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
523 ## [2.6.1] - 2023-06-10
527 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
531 - Fix average statistics computation: ensure failed tasks are not accounted.
533 ## [2.6.0] - 2023-06-09
537 - Add `LEAST_ELU` worker choice strategy (experimental).
538 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
542 - Refactor pool worker node usage internals.
543 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
544 - Breaking change: pool information `info` property object fields have been renamed.
548 - Fix wait time accounting.
549 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
550 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
552 ## [2.5.4] - 2023-06-07
556 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
560 - Compute statistics at the worker level only if needed.
561 - Add `worker_threads` options to thread pool options.
565 - Make the `LEAST_BUSY` strategy only relies on task runtime.
567 ## [2.5.3] - 2023-06-04
571 - Refine pool information content.
572 - Limit pool internals public exposure.
574 ## [2.5.2] - 2023-06-02
578 - Add `taskError` pool event for task execution error.
579 - Add pool information `info` property to pool.
580 - Emit pool information on `busy` and `full` pool events.
582 ## [2.5.1] - 2023-06-01
586 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
587 - Add `error` pool event for uncaught worker error.
589 ## [2.5.0] - 2023-05-31
593 - Switch pool event emitter to `EventEmitterAsyncResource`.
594 - Add tasks wait time accounting in per worker tasks usage.
595 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
599 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
601 ## [2.4.14] - 2023-05-09
605 - Ensure no undefined task runtime can land in the tasks history.
606 - Fix median computation implementation once again.
610 - Unit tests for median and queue implementations.
612 ## [2.4.13] - 2023-05-08
616 - Fix worker choice strategy options validation.
617 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
619 ## [2.4.12] - 2023-05-06
623 - Support multiple task functions per worker.
624 - Add custom worker weights support to worker choice strategies options.
628 - Use O(1) queue implementation for tasks queueing.
632 - Fix median computation implementation.
633 - Fix fair share worker choice strategy internals update.
635 ## [2.4.11] - 2023-04-23
639 - Optimize free worker finding in worker choice strategies.
641 ## [2.4.10] - 2023-04-15
645 - Fix typescript type definition for task function: ensure the input data is optional.
646 - Fix typescript type definition for pool execute(): ensure the input data is optional.
648 ## [2.4.9] - 2023-04-15
652 - Add tasks queue enablement runtime setter to pool.
653 - Add tasks queue options runtime setter to pool.
654 - Add worker choice strategy options runtime setter to pool.
658 - Remove the tasks queuing experimental status.
662 - Fix task function type definition and validation.
663 - Fix worker choice strategy options handling.
665 ## [2.4.8] - 2023-04-12
669 - Fix message between main worker and worker type definition for tasks.
670 - Fix code documentation.
672 ## [2.4.7] - 2023-04-11
676 - Add worker tasks queue options to pool options.
680 - Fix missing documentation.
682 ## [2.4.6] - 2023-04-10
686 - Ensure one task at a time is executed per worker with tasks queueing enabled.
687 - Properly count worker executing tasks with tasks queueing enabled.
689 ## [2.4.5] - 2023-04-09
693 - Use monotonic high resolution timer for worker tasks runtime.
694 - Add worker tasks median runtime to statistics.
695 - Add worker tasks queue (experimental).
697 ## [2.4.4] - 2023-04-07
701 - Add `PoolEvents` enumeration and `PoolEvent` type.
705 - Destroy worker only on alive check.
707 ## [2.4.3] - 2023-04-07
711 - Fix typedoc generation with inheritance.
713 ## [2.4.2] - 2023-04-06
717 - Add `full` event to dynamic pool.
718 - Keep worker choice strategy in memory for conditional reuse.
722 - Fix possible negative worker key at worker removal in worker choice strategies.
724 ## [2.4.1] - 2023-04-05
728 - Optimize worker choice strategy for dynamic pool.
732 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
734 ## [2.4.0] - 2023-04-04
738 - Add `LESS_BUSY` worker choice strategy.
742 - Optimize worker storage in pool.
743 - Optimize worker alive status check.
744 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
745 - Optimize `LESS_USED` worker choice strategy.
746 - Update benchmark versus external threads pools.
747 - Optimize tasks usage statistics requirements for worker choice strategy.
751 - Ensure trimmable characters are checked at pool initialization.
752 - Fix message id integer overflow.
753 - Fix pool worker removal in worker choice strategy internals.
754 - Fix package publication with pnpm.
756 ## [2.4.0-3] - 2023-04-04
760 - Add `LESS_BUSY` worker choice strategy.
764 - Optimize worker storage in pool.
765 - Optimize worker alive status check.
766 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
767 - Optimize `LESS_USED` worker choice strategy.
768 - Update benchmark versus external threads pools.
772 - Ensure trimmable characters are checked at pool initialization.
773 - Fix message id integer overflow.
774 - Fix pool worker removal in worker choice strategy internals.
775 - Fix package publication with pnpm.
777 ## [2.4.0-2] - 2023-04-03
781 - Add `LESS_BUSY` worker choice strategy.
785 - Optimize worker storage in pool.
786 - Optimize worker alive status check.
787 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
788 - Optimize `LESS_USED` 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 ## [2.4.0-1] - 2023-04-03
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.
812 - Ensure trimmable characters are checked at pool initialization.
813 - Fix message id integer overflow.
814 - Fix pool worker removal in worker choice strategy internals.
816 ## [2.4.0-0] - 2023-04-03
820 - Add `LESS_BUSY` worker choice strategy.
824 - Optimize worker storage in pool.
825 - Optimize worker alive status check.
826 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
827 - Optimize `LESS_USED` worker choice strategy.
831 - Ensure trimmable characters are checked at pool initialization.
832 - Fix message id integer overflow.
833 - Fix pool worker removal in worker choice strategy internals.
835 ## [2.3.10] - 2023-03-18
839 - Fix package.json `exports` syntax for ESM and CommonJS.
843 - Permit SemVer pre-release publication.
845 ## [2.3.10-2] - 2023-03-18
849 - Fix package.json `exports` syntax for ESM and CommonJS.
851 ## [2.3.10-1] - 2023-03-18
855 - Permit SemVer pre-release publication.
857 ## [2.3.10-0] - 2023-03-18
861 - Fix package.json `exports` syntax for ESM and CommonJS.
863 ## [2.3.9] - 2023-03-18
867 - Introduce ESM module support along with CommonJS one.
871 - Fix brown paper bag bug referencing the same object literal.
873 ## [2.3.8] - 2023-03-18
877 - Switch internal benchmarking code to benny.
878 - Switch to TypeScript 5.x.x.
879 - Switch rollup bundler plugins to core ones.
880 - Switch to TSDoc syntax.
881 - Enforce conventional commits.
885 - Fix random integer generator.
886 - Fix worker choice strategy pool type identification at initialization.
888 ## [2.3.7] - 2022-10-23
892 - Switch to open collective FOSS project funding platform.
893 - Switch to ts-standard linter configuration on TypeScript code.
897 - Fixed missing async on pool execute method.
898 - Fixed typing in TypeScript example.
899 - Fixed types in unit tests.
901 ## [2.3.6] - 2022-10-22
905 - Cleanup pool attributes and methods.
906 - Refine error types thrown.
910 - Fix continuous integration build on windows.
911 - Fix code coverage reporting by using c8 instead of nyc.
913 ## [2.3.5] - 2022-10-21
917 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
918 - Optimize tasks usage lookup implementation.
922 - Fix missed pool event emitter type export.
923 - Fix typedoc documentation generation.
925 ## [2.3.4] - 2022-10-17
929 - Fully automate release process with release-it.
933 - Optimize fair share task scheduling algorithm implementation.
934 - Update benchmark versus external pools results with latest version.
936 ## [2.3.3] - 2022-10-15
940 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
942 ## [2.3.2] - 2022-10-14
946 - Optimize fair share worker selection strategy implementation.
950 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
952 ## [2.3.1] - 2022-10-13
956 - Pool worker choice strategies:
957 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
958 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
960 ## [2.2.2] - 2022-10-09
964 - Fixed `README.md` file.
966 ## [2.2.1] - 2022-10-08
970 - Dynamic worker choice strategy change at runtime.
972 ## [2.2.0] - 2022-01-05
976 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
978 ## [2.1.0] - 2021-08-29
982 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
986 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
987 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
988 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
989 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
991 ## [2.0.2] - 2021-05-12
995 - Fix `busy` event emission on fixed pool type
997 ## [2.0.1] - 2021-03-16
1001 - Check if pool options are properly set.
1002 - `busy` event is emitted on all pool types.
1004 ## [2.0.0] - 2021-03-01
1008 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1010 ### Breaking Changes
1012 - `FullPool` event is now renamed to `busy`.
1013 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1014 _Find more details on our JSDoc._
1016 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1018 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1020 ### Pool options types declaration merge
1022 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1024 #### New `export` strategy
1028 const DynamicThreadPool = require('poolifier/lib/dynamic')
1030 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1033 But you should always prefer just using
1036 const { DynamicThreadPool } = require('poolifier')
1039 #### New type definitions for input data and response
1041 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1042 _This is not a limitation by poolifier but Node.js._
1044 #### Public property replacements
1046 `numWorkers` property is now `numberOfWorkers`
1048 #### Internal (protected) properties and methods renaming
1050 These properties are not intended for end users
1052 - `id` => `nextMessageId`
1054 These methods are not intended for end users
1056 - `_chooseWorker` => `chooseWorker`
1057 - `_newWorker` => `createWorker`
1058 - `_execute` => `internalExecute`
1059 - `_chooseWorker` => `chooseWorker`
1060 - `_checkAlive` => `checkAlive`
1062 - `_runAsync` => `runAsync`
1064 ## [1.1.0] - 2020-05-21
1068 - ThreadWorker support async functions as option
1069 - Various external library patches
1071 ## [1.0.0] - 2020-01-24
1075 - FixedThreadPool implementation
1076 - DynamicThreadPool implementation
1077 - WorkerThread implementation to improve developer experience