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 - Avoid null exception at sending message to worker.
14 ## [3.0.2] - 2023-10-17
18 - 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).
20 ## [3.0.1] - 2023-10-16
24 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
28 - Switch the worker node eventing code to `EventTarget` API.
30 ## [3.0.0] - 2023-10-08
34 - Remove Node.js 16.x.x (EOL) support.
36 ## [2.7.5] - 2023-10-03
40 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
42 ## [2.7.4] - 2023-09-25
46 - Fix source maps (bundler issue).
48 ## [2.7.3] - 2023-09-24
52 - Convert pool event emitter to event emitter async resource.
54 ## [2.7.2] - 2023-09-23
58 - Add source maps to npm package to ease debugging.
62 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
64 ## [2.7.1] - 2023-09-20
68 - Ensure worker message listener used one time are removed after usage.
70 ## [2.7.0] - 2023-09-19
74 - Fix task stealing related tasks queue options handling at runtime.
78 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
82 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
83 - Stricter worker constructor arguments validation.
85 ## [2.6.45] - 2023-09-17
89 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
93 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
94 - Add `start()` method to pool API to start the minimum number of workers.
95 - 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.
96 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
98 ## [2.6.44] - 2023-09-08
102 - Use a dedicated PAT to publish on GitHub packages registry.
106 - Publish on GitHub packages registry on release.
110 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
112 ## [2.6.43] - 2023-09-08
116 - Publish on GitHub packages registry on release.
120 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
122 ## [2.6.42] - 2023-09-06
126 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
128 ## [2.6.41] - 2023-09-03
132 - Optimize worker choice strategies implementation.
134 ## [2.6.40] - 2023-09-01
138 - Do not pre-choose in WRR worker choice strategy to avoid bias.
139 - Avoid array out of bound in worker choice strategies after worker node removal.
141 ## [2.6.39] - 2023-08-30
145 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
147 ## [2.6.38] - 2023-08-30
151 - Bundle typescript types declaration into one file.
155 - Improve interleaved weighted round robin worker choice strategy implementation.
157 ## [2.6.37] - 2023-08-28
161 - Ensure unused worker usage statistics are deleted at runtime.
165 - Rename worker choice strategy options `choiceRetries` to `retries`.
166 - Avoid unnecessary branching in worker choice strategies.
168 ## [2.6.36] - 2023-08-27
172 - Fix pool `execute()` arguments check.
176 - Make continuous tasks stealing algorithm less aggressive.
177 - Fine tune tasks stealing algorithm under back pressure.
179 ## [2.6.35] - 2023-08-25
183 - Don't account worker usage statistics for tasks that have failed.
184 - Fix pool information runtime and wait time median computation.
188 - Update simple moving average implementation to use a circular buffer.
189 - Update simple moving median implementation to use a circular buffer.
190 - Account for stolen tasks in worker usage statistics and pool information.
194 - Continuous tasks stealing algorithm.
196 ## [2.6.34] - 2023-08-24
200 - Avoid cascading tasks stealing under back pressure.
204 - Add fastpath to queued tasks rescheduling.
206 ## [2.6.33] - 2023-08-24
210 - Fix queued tasks rescheduling.
214 - Rename tasks queue options `queueMaxSize` to `size`.
218 - Task stealing scheduling algorithm if tasks queueing is enabled.
220 ## [2.6.32] - 2023-08-23
224 - Ensure no task can be executed when the pool is destroyed.
228 - Add `queueMaxSize` option to tasks queue options.
229 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
230 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
232 ## [2.6.31] - 2023-08-20
236 - Fix worker choice strategy retries mechanism in some edge cases.
240 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
241 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
243 ## [2.6.30] - 2023-08-19
247 - Ensure pool event `backPressure` is emitted.
248 - Ensure pool event `full` is emitted only once.
249 - Ensure worker node cannot be instantiated without proper arguments.
251 ## [2.6.29] - 2023-08-18
255 - Fix race condition between ready and task functions worker message handling at startup.
256 - Fix duplicate task function worker usage statistics computation per task function.
257 - Update task function worker usage statistics if and only if there's at least two different task functions.
258 - Fix race condition at task function worker usage executing task computation leading to negative value.
262 - 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).
263 - Use back pressure detection in worker choice strategies.
264 - Add worker choice strategies retries mechanism if no worker is eligible.
266 ## [2.6.28] - 2023-08-16
270 - Ensure pool workers are properly initialized.
274 - HTTP server pool examples: express-cluster, express-hybrid.
278 - Remove now useless branching in worker hot code path.
280 ## [2.6.27] - 2023-08-15
284 - Add `KillHandler` type definition to exported types.
288 - Add `destroy` event to pool API.
290 ## [2.6.26] - 2023-08-15
294 - Add kill handler to worker options allowing to execute custom code when worker is killed.
295 - Add `listTaskFunctions()` method to pool API.
296 - SMTP client pool example: nodemailer.
298 ## [2.6.25] - 2023-08-13
302 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
303 - WebSocket server pool examples: ws-cluster, ws-hybrid.
305 ## [2.6.24] - 2023-08-12
309 - Add array of transferable objects to the `execute()` method arguments.
310 - WebSocket server pool examples: ws-worker_threads.
312 ## [2.6.23] - 2023-08-11
316 - 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.
320 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
321 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
323 ## [2.6.22] - 2023-08-10
327 - Add missing `types` field to package.json `exports`.
331 - Structure markdown documentation (PR #811).
333 ## [2.6.21] - 2023-08-03
337 - Improve code documentation.
338 - Code refactoring and cleanup for better maintainability and readability.
340 ## [2.6.20] - 2023-07-21
344 - Fix queued tasks redistribution on error task execution starvation.
345 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
349 - Drastically reduce lookups by worker in the worker nodes.
351 ## [2.6.19] - 2023-07-20
355 - Dedicated internal communication channel for worker_threads pools.
357 ## [2.6.18] - 2023-07-19
361 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
363 ## [2.6.17] - 2023-07-16
367 - Add `listTaskFunctions()` method to worker API.
369 ## [2.6.16] - 2023-07-12
373 - Fix pool startup detection.
374 - Fix worker task functions handling.
376 ## [2.6.15] - 2023-07-11
380 - Take into account worker node readiness in worker choice strategies.
382 ## [2.6.14] - 2023-07-10
386 - Fix task function statistics tracking.
388 ## [2.6.13] - 2023-07-10
392 - Add per task function statistics tracking.
393 - Add public methods to manipulate the worker task functions at runtime.
395 ## [2.6.12] - 2023-07-09
399 - Workaround import issue with `node:os` module in node 16.x.x.
401 ## [2.6.11] - 2023-07-09
405 - Fix pool readiness semantic.
407 ## [2.6.10] - 2023-07-08
411 - Ensure workers are not recreated on error at pool startup.
415 - Add `ready` and `strategy` fields to pool information.
416 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
417 - Add dynamic pool sizing checks.
419 ## [2.6.9] - 2023-07-07
423 - Recreate the right worker type on uncaught exception.
427 - Add minimum and maximum to internal measurement statistics.
428 - Add `runTime` and `waitTime` to pool information.
429 - Check worker inactive time only on dynamic worker.
431 ## [2.6.8] - 2023-07-03
435 - Brown paper bag release to fix version handling in pool information.
437 ## [2.6.7] - 2023-07-03
441 - Ensure worker queued tasks at error are reassigned to other pool workers.
445 - Add pool `utilization` ratio to pool information.
446 - Add `version` to pool information.
447 - Add worker information to worker nodes.
449 ## [2.6.6] - 2023-07-01
453 - Add safe helper `availableParallelism()` to help sizing the pool.
457 - Ensure message handler is only registered in worker.
459 ## [2.6.5] - 2023-06-27
463 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
467 - Artificial version bump to 2.6.5 to workaround publication issue.
468 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
469 - Ensure pool event is emitted before task error promise rejection.
470 - Fix queued tasks count computation.
474 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
476 ## [2.6.4] - 2023-06-27
480 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
484 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
485 - Ensure pool event is emitted before task error promise rejection.
486 - Fix queued tasks count computation.
490 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
492 ## [2.6.3] - 2023-06-19
496 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
497 - Update strategies internals after statistics computation.
501 - Optimize O(1) queue implementation.
503 ## [2.6.2] - 2023-06-12
507 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
509 ## [2.6.1] - 2023-06-10
513 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
517 - Fix average statistics computation: ensure failed tasks are not accounted.
519 ## [2.6.0] - 2023-06-09
523 - Add `LEAST_ELU` worker choice strategy (experimental).
524 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
528 - Refactor pool worker node usage internals.
529 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
530 - Breaking change: pool information `info` property object fields have been renamed.
534 - Fix wait time accounting.
535 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
536 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
538 ## [2.5.4] - 2023-06-07
542 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
546 - Compute statistics at the worker level only if needed.
547 - Add `worker_threads` options to thread pool options.
551 - Make the `LEAST_BUSY` strategy only relies on task runtime.
553 ## [2.5.3] - 2023-06-04
557 - Refine pool information content.
558 - Limit pool internals public exposure.
560 ## [2.5.2] - 2023-06-02
564 - Add `taskError` pool event for task execution error.
565 - Add pool information `info` property to pool.
566 - Emit pool information on `busy` and `full` pool events.
568 ## [2.5.1] - 2023-06-01
572 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
573 - Add `error` pool event for uncaught worker error.
575 ## [2.5.0] - 2023-05-31
579 - Switch pool event emitter to `EventEmitterAsyncResource`.
580 - Add tasks wait time accounting in per worker tasks usage.
581 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
585 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
587 ## [2.4.14] - 2023-05-09
591 - Ensure no undefined task runtime can land in the tasks history.
592 - Fix median computation implementation once again.
596 - Unit tests for median and queue implementations.
598 ## [2.4.13] - 2023-05-08
602 - Fix worker choice strategy options validation.
603 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
605 ## [2.4.12] - 2023-05-06
609 - Support multiple task functions per worker.
610 - Add custom worker weights support to worker choice strategies options.
614 - Use O(1) queue implementation for tasks queueing.
618 - Fix median computation implementation.
619 - Fix fair share worker choice strategy internals update.
621 ## [2.4.11] - 2023-04-23
625 - Optimize free worker finding in worker choice strategies.
627 ## [2.4.10] - 2023-04-15
631 - Fix typescript type definition for task function: ensure the input data is optional.
632 - Fix typescript type definition for pool execute(): ensure the input data is optional.
634 ## [2.4.9] - 2023-04-15
638 - Add tasks queue enablement runtime setter to pool.
639 - Add tasks queue options runtime setter to pool.
640 - Add worker choice strategy options runtime setter to pool.
644 - Remove the tasks queuing experimental status.
648 - Fix task function type definition and validation.
649 - Fix worker choice strategy options handling.
651 ## [2.4.8] - 2023-04-12
655 - Fix message between main worker and worker type definition for tasks.
656 - Fix code documentation.
658 ## [2.4.7] - 2023-04-11
662 - Add worker tasks queue options to pool options.
666 - Fix missing documentation.
668 ## [2.4.6] - 2023-04-10
672 - Ensure one task at a time is executed per worker with tasks queueing enabled.
673 - Properly count worker executing tasks with tasks queueing enabled.
675 ## [2.4.5] - 2023-04-09
679 - Use monotonic high resolution timer for worker tasks runtime.
680 - Add worker tasks median runtime to statistics.
681 - Add worker tasks queue (experimental).
683 ## [2.4.4] - 2023-04-07
687 - Add `PoolEvents` enumeration and `PoolEvent` type.
691 - Destroy worker only on alive check.
693 ## [2.4.3] - 2023-04-07
697 - Fix typedoc generation with inheritance.
699 ## [2.4.2] - 2023-04-06
703 - Add `full` event to dynamic pool.
704 - Keep worker choice strategy in memory for conditional reuse.
708 - Fix possible negative worker key at worker removal in worker choice strategies.
710 ## [2.4.1] - 2023-04-05
714 - Optimize worker choice strategy for dynamic pool.
718 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
720 ## [2.4.0] - 2023-04-04
724 - Add `LESS_BUSY` worker choice strategy.
728 - Optimize worker storage in pool.
729 - Optimize worker alive status check.
730 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
731 - Optimize `LESS_USED` worker choice strategy.
732 - Update benchmark versus external threads pools.
733 - Optimize tasks usage statistics requirements for worker choice strategy.
737 - Ensure trimmable characters are checked at pool initialization.
738 - Fix message id integer overflow.
739 - Fix pool worker removal in worker choice strategy internals.
740 - Fix package publication with pnpm.
742 ## [2.4.0-3] - 2023-04-04
746 - Add `LESS_BUSY` worker choice strategy.
750 - Optimize worker storage in pool.
751 - Optimize worker alive status check.
752 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
753 - Optimize `LESS_USED` worker choice strategy.
754 - Update benchmark versus external threads pools.
758 - Ensure trimmable characters are checked at pool initialization.
759 - Fix message id integer overflow.
760 - Fix pool worker removal in worker choice strategy internals.
761 - Fix package publication with pnpm.
763 ## [2.4.0-2] - 2023-04-03
767 - Add `LESS_BUSY` worker choice strategy.
771 - Optimize worker storage in pool.
772 - Optimize worker alive status check.
773 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
774 - Optimize `LESS_USED` worker choice strategy.
778 - Ensure trimmable characters are checked at pool initialization.
779 - Fix message id integer overflow.
780 - Fix pool worker removal in worker choice strategy internals.
781 - Fix package publication with pnpm.
783 ## [2.4.0-1] - 2023-04-03
787 - Add `LESS_BUSY` worker choice strategy.
791 - Optimize worker storage in pool.
792 - Optimize worker alive status check.
793 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
794 - Optimize `LESS_USED` worker choice strategy.
798 - Ensure trimmable characters are checked at pool initialization.
799 - Fix message id integer overflow.
800 - Fix pool worker removal in worker choice strategy internals.
802 ## [2.4.0-0] - 2023-04-03
806 - Add `LESS_BUSY` worker choice strategy.
810 - Optimize worker storage in pool.
811 - Optimize worker alive status check.
812 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
813 - Optimize `LESS_USED` worker choice strategy.
817 - Ensure trimmable characters are checked at pool initialization.
818 - Fix message id integer overflow.
819 - Fix pool worker removal in worker choice strategy internals.
821 ## [2.3.10] - 2023-03-18
825 - Fix package.json `exports` syntax for ESM and CommonJS.
829 - Permit SemVer pre-release publication.
831 ## [2.3.10-2] - 2023-03-18
835 - Fix package.json `exports` syntax for ESM and CommonJS.
837 ## [2.3.10-1] - 2023-03-18
841 - Permit SemVer pre-release publication.
843 ## [2.3.10-0] - 2023-03-18
847 - Fix package.json `exports` syntax for ESM and CommonJS.
849 ## [2.3.9] - 2023-03-18
853 - Introduce ESM module support along with CommonJS one.
857 - Fix brown paper bag bug referencing the same object literal.
859 ## [2.3.8] - 2023-03-18
863 - Switch internal benchmarking code to benny.
864 - Switch to TypeScript 5.x.x.
865 - Switch rollup bundler plugins to core ones.
866 - Switch to TSDoc syntax.
867 - Enforce conventional commits.
871 - Fix random integer generator.
872 - Fix worker choice strategy pool type identification at initialization.
874 ## [2.3.7] - 2022-10-23
878 - Switch to open collective FOSS project funding platform.
879 - Switch to ts-standard linter configuration on TypeScript code.
883 - Fixed missing async on pool execute method.
884 - Fixed typing in TypeScript example.
885 - Fixed types in unit tests.
887 ## [2.3.6] - 2022-10-22
891 - Cleanup pool attributes and methods.
892 - Refine error types thrown.
896 - Fix continuous integration build on windows.
897 - Fix code coverage reporting by using c8 instead of nyc.
899 ## [2.3.5] - 2022-10-21
903 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
904 - Optimize tasks usage lookup implementation.
908 - Fix missed pool event emitter type export.
909 - Fix typedoc documentation generation.
911 ## [2.3.4] - 2022-10-17
915 - Fully automate release process with release-it.
919 - Optimize fair share task scheduling algorithm implementation.
920 - Update benchmark versus external pools results with latest version.
922 ## [2.3.3] - 2022-10-15
926 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
928 ## [2.3.2] - 2022-10-14
932 - Optimize fair share worker selection strategy implementation.
936 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
938 ## [2.3.1] - 2022-10-13
942 - Pool worker choice strategies:
943 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
944 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
946 ## [2.2.2] - 2022-10-09
950 - Fixed `README.md` file.
952 ## [2.2.1] - 2022-10-08
956 - Dynamic worker choice strategy change at runtime.
958 ## [2.2.0] - 2022-01-05
962 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
964 ## [2.1.0] - 2021-08-29
968 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
972 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
973 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
974 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
975 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
977 ## [2.0.2] - 2021-05-12
981 - Fix `busy` event emission on fixed pool type
983 ## [2.0.1] - 2021-03-16
987 - Check if pool options are properly set.
988 - `busy` event is emitted on all pool types.
990 ## [2.0.0] - 2021-03-01
994 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
998 - `FullPool` event is now renamed to `busy`.
999 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1000 _Find more details on our JSDoc._
1002 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1004 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1006 ### Pool options types declaration merge
1008 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1010 #### New `export` strategy
1014 const DynamicThreadPool = require('poolifier/lib/dynamic')
1016 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1019 But you should always prefer just using
1022 const { DynamicThreadPool } = require('poolifier')
1025 #### New type definitions for input data and response
1027 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1028 _This is not a limitation by poolifier but Node.js._
1030 #### Public property replacements
1032 `numWorkers` property is now `numberOfWorkers`
1034 #### Internal (protected) properties and methods renaming
1036 These properties are not intended for end users
1038 - `id` => `nextMessageId`
1040 These methods are not intended for end users
1042 - `_chooseWorker` => `chooseWorker`
1043 - `_newWorker` => `createWorker`
1044 - `_execute` => `internalExecute`
1045 - `_chooseWorker` => `chooseWorker`
1046 - `_checkAlive` => `checkAlive`
1048 - `_runAsync` => `runAsync`
1050 ## [1.1.0] - 2020-05-21
1054 - ThreadWorker support async functions as option
1055 - Various external library patches
1057 ## [1.0.0] - 2020-01-24
1061 - FixedThreadPool implementation
1062 - DynamicThreadPool implementation
1063 - WorkerThread implementation to improve developer experience