build(ci): fix automated documentation publication at releasing

[poolifier.git] / CHANGELOG.md

# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [4.0.16](https://github.com/poolifier/poolifier/compare/v4.0.15...v4.0.16) (2024-07-05)


### 📚 Documentation

* generate documentation ([224d008](https://github.com/poolifier/poolifier/commit/224d008191f52fa20b93e1ba67919569f8d6e315))
* generate documentation ([627fc57](https://github.com/poolifier/poolifier/commit/627fc572465ba2113cbf3df6bd055c3242ecd0fe))
* refine PR template ([f5e9127](https://github.com/poolifier/poolifier/commit/f5e91274ea67f61521fadf0ccbafc6d00f5d3b87))
* refine PR template ([e95501c](https://github.com/poolifier/poolifier/commit/e95501c05febf08366d375218728d5778432c1de))
* refine README.md badges ([7169bda](https://github.com/poolifier/poolifier/commit/7169bda30538a5244b2598a4ef466c5687953ebd))


### ✨ Polish

* **ci:** cleanup GH actions ([c5db2d3](https://github.com/poolifier/poolifier/commit/c5db2d3ea50692486410eb1a33e5bb51d6d4181e))
* code reformatting ([fe6df28](https://github.com/poolifier/poolifier/commit/fe6df2852c1f0964cdffb0698461c9d66b1cf7ed))
* refine biome.js configuration ([1352ca7](https://github.com/poolifier/poolifier/commit/1352ca70c0b5c6b4ff3813b0c24354b5514b2796))
* silence linter ([a17b6fe](https://github.com/poolifier/poolifier/commit/a17b6fe6a9b7cde367fa1f1a0a89f6ee5db46ad6))


### 🤖 Automation

* **ci:** add autofix GH action ([14b39b9](https://github.com/poolifier/poolifier/commit/14b39b9c09ab382fa25dcb0d52c50b6d05a3affb))
* **ci:** do not cancel workflow in case of autofix failure ([177dbab](https://github.com/poolifier/poolifier/commit/177dbab8accac6267be8973103757de31f4a4c23))
* **ci:** fix autofix GH action ([e3a9678](https://github.com/poolifier/poolifier/commit/e3a9678311f735b7c951c5d72f26ef86c7beca9c))
* **ci:** fix autofix GH action ([0b7cbf7](https://github.com/poolifier/poolifier/commit/0b7cbf73dfdc8346132c002ba9c83fdafe286ee2))
* **ci:** fix eslint configuration ([c5d7f73](https://github.com/poolifier/poolifier/commit/c5d7f736e1e8c36a2c2d9cbe30e86d1d3ba863a1))
* **ci:** publish documentation at release ([3a83d94](https://github.com/poolifier/poolifier/commit/3a83d94cd44b504e3b9a3f3b15e9dec4f8c33d49))
* **ci:** refine autofix GH action ([8b7aa42](https://github.com/poolifier/poolifier/commit/8b7aa4204c27efd1dc699f7baea65b5262bd26b3))
* **ci:** refine autofix GH action ([8ab143b](https://github.com/poolifier/poolifier/commit/8ab143bb67ef7fb367d771c652cc44df70c9b625))
* **ci:** switch to release-please release manager ([4c7e68a](https://github.com/poolifier/poolifier/commit/4c7e68aa71533a8ef98296d2f50a2aac898d6b17))
* **deps-dev:** apply updates ([5c48a85](https://github.com/poolifier/poolifier/commit/5c48a8596b49dec06ec8995df4941ad63cc68f46))
* **deps-dev:** apply updates ([f94bb23](https://github.com/poolifier/poolifier/commit/f94bb23c8a460415f01bee2a34bf1e56b74236a8))
* **deps-dev:** apply updates ([1e98512](https://github.com/poolifier/poolifier/commit/1e9851233c950074ccbb5cd525fc0f4075e491d4))
* **deps-dev:** apply updates ([aaceda9](https://github.com/poolifier/poolifier/commit/aaceda9e4a134d9f8d3db37e349a18e7b2b1c303))
* **deps-dev:** apply updates ([3dcc95e](https://github.com/poolifier/poolifier/commit/3dcc95e54a6bfeb4b27460d60d3c90d27ac352dd))
* **deps-dev:** apply updates ([0aa0016](https://github.com/poolifier/poolifier/commit/0aa00166eaa9a8c9b505b4fa7fd5dc50d831b7ef))
* **deps-dev:** apply updates ([dea4237](https://github.com/poolifier/poolifier/commit/dea42379cfdbcf1c1c9800df7c097eab484ebc07))
* **deps-dev:** apply updates ([e06ce0e](https://github.com/poolifier/poolifier/commit/e06ce0ec82c8c076d6136f85f12101181d922612))
* **deps-dev:** apply updates ([80605a6](https://github.com/poolifier/poolifier/commit/80605a6c89c41c5b71e83385f615f85483987ea1))
* **deps-dev:** apply updates ([3b594fe](https://github.com/poolifier/poolifier/commit/3b594fe1b0f89d6665da2eb2ebdc14eb7628fe70))
* **deps-dev:** apply updates ([df01d9a](https://github.com/poolifier/poolifier/commit/df01d9a8a7053a4ff33e704cd5493f0a7bc4e2e7))
* **deps-dev:** apply updates ([a1b4a65](https://github.com/poolifier/poolifier/commit/a1b4a65143c0253b57fee18affd88a554122e955))
* **deps-dev:** apply updates ([31a42de](https://github.com/poolifier/poolifier/commit/31a42de7d691911759e12a673e5a2153f5558ed8))
* **deps-dev:** bump @cspell/eslint-plugin from 8.9.0 to 8.9.1 ([0b4d6a4](https://github.com/poolifier/poolifier/commit/0b4d6a4b0255f0172da50a9ba3989d21725027a5))
* **deps-dev:** bump eslint-plugin-jsdoc from 48.2.13 to 48.4.0 ([195a874](https://github.com/poolifier/poolifier/commit/195a874e9537a715e04b54e44c9a4eef04b1fefa))
* **deps-dev:** bump mocha from 10.4.0 to 10.5.0 ([b1b2093](https://github.com/poolifier/poolifier/commit/b1b20933105fb3c21f3d3825dc18a87501ad8275))
* **deps-dev:** bump mocha from 10.5.1 to 10.5.2 ([a4d1195](https://github.com/poolifier/poolifier/commit/a4d1195cd5b6d60f0d4424b32c638d304023e15e))
* **deps-dev:** bump neostandard from 0.7.2 to 0.8.0 ([7344812](https://github.com/poolifier/poolifier/commit/7344812ff30f82f3b7b88383eca5564c398d2de0))
* **deps-dev:** bump typedoc from 0.26.0 to 0.26.2 ([8004ea7](https://github.com/poolifier/poolifier/commit/8004ea76f77c3dee098569b37bc9dec9e82f8fe3))
* **deps-dev:** bump typescript ([fca1e52](https://github.com/poolifier/poolifier/commit/fca1e522f2df0e93e302e6278dc4725b2e28f561))
* **deps-dev:** bump typescript ([345d416](https://github.com/poolifier/poolifier/commit/345d416980bd3204398e730ca259d1755dcd0f64))
* **deps-dev:** bump typescript ([3aa8d66](https://github.com/poolifier/poolifier/commit/3aa8d6646706dd32bbd96795330f0a5365d52efa))
* **deps-dev:** bump typescript ([8837306](https://github.com/poolifier/poolifier/commit/8837306853d6b01efaf67bf69f129fc9ca47b071))
* **deps-dev:** bump typescript ([0b79799](https://github.com/poolifier/poolifier/commit/0b797997c9340aac75c7be6e5559b08076c387e7))
* **deps-dev:** bump typescript ([995d429](https://github.com/poolifier/poolifier/commit/995d429cce313177943d54e9c1f3e02a1cdc8c31))
* **deps-dev:** bump typescript ([2905914](https://github.com/poolifier/poolifier/commit/2905914e6e410cff2a1f8a75c8184abf701d7a16))
* **deps-dev:** bump typescript ([f2c2f1b](https://github.com/poolifier/poolifier/commit/f2c2f1b196b0cac64235304b5df4b24a97d09ffb))
* **deps-dev:** bump typescript ([37b0774](https://github.com/poolifier/poolifier/commit/37b07742956c3d25debda0048a60afd3659b547f))
* **deps-dev:** bump typescript ([f4a2509](https://github.com/poolifier/poolifier/commit/f4a2509b88456b0f6d16c8348c1e07470a94415f))
* **deps-dev:** bump typescript ([97bb99a](https://github.com/poolifier/poolifier/commit/97bb99ac1e28c87f59b75ea23a9c6643a8fba9c4))
* **deps:** bump poolifier ([5d5410e](https://github.com/poolifier/poolifier/commit/5d5410ec4203bc1ffa0a81fa52de85971916fed8))
* **deps:** bump poolifier ([177e46b](https://github.com/poolifier/poolifier/commit/177e46bb9cab33ad65c64b3dd5fd524bb0ac1eef))
* **deps:** bump poolifier ([580433b](https://github.com/poolifier/poolifier/commit/580433bc22585b6565a3404466a13e5babfd23fa))
* **deps:** bump poolifier ([a0583d4](https://github.com/poolifier/poolifier/commit/a0583d40e971f43f47b79fd049e99c069db8cac1))
* **deps:** bump poolifier ([161136f](https://github.com/poolifier/poolifier/commit/161136fe626ea7de93956b2e1e6228ffd6eba209))
* **deps:** bump poolifier ([70075ce](https://github.com/poolifier/poolifier/commit/70075ce9218f5a5a07c0decf0068775ae351c356))
* **deps:** bump poolifier ([d74c068](https://github.com/poolifier/poolifier/commit/d74c0684cb549b12897e79e31508b3cad5152456))
* **deps:** bump poolifier ([b8e4e7d](https://github.com/poolifier/poolifier/commit/b8e4e7dec768e992ba38e29dee0a0194eeb4fd50))
* **deps:** bump poolifier ([239d223](https://github.com/poolifier/poolifier/commit/239d22372bddd21106b22361038be2f3aae6e5de))
* **deps:** bump poolifier in /examples/typescript/http-client-pool ([1e6c12d](https://github.com/poolifier/poolifier/commit/1e6c12d988c87fdf1f95a2ffece8c1c76e49bcf3))
* **deps:** bump poolifier in /examples/typescript/smtp-client-pool ([4c29535](https://github.com/poolifier/poolifier/commit/4c29535a8e8669608907f0db799efa1c94f17421))
* **deps:** bump ws ([5ae7d26](https://github.com/poolifier/poolifier/commit/5ae7d26a61d9a13e49ccde6117c02d26f49d841d))
* **deps:** bump ws ([5fea98e](https://github.com/poolifier/poolifier/commit/5fea98eac18f518cb3c76dfed5e514e1aa27ecee))
* **deps:** bump ws ([cf6f83d](https://github.com/poolifier/poolifier/commit/cf6f83dd588e71b440f1454dd592c1e8029ada6d))

## [4.0.15] - 2024-06-20

### Fixed

- Fix priority queue dequeue() from the last prioritized bucket.

## [4.0.14] - 2024-06-12

### Changed

- Add mapExecute() helper to execute a task function on an iterable data's input.

## [4.0.13] - 2024-05-29

### Changed

- Optimize tasks queue implementation.
- Enable prioritized tasks queueing only when necessary.

## [4.0.12] - 2024-05-25

### Changed

- Optimize circular buffer implementation to store task execution measurements.

## [4.0.11] - 2024-05-21

### Changed

- Switch to optimized circular buffer implementation to store task execution measurements.

## [4.0.10] - 2024-05-20

### Fixed

- Ensure tasks stealing dynamic worker node is not destroyed on inactivity.

## [4.0.9] - 2024-05-19

### Changed

- Add ELU `utilization` statistics to pool information.

## [4.0.8] - 2024-05-15

### Fixed

- Fix default task function worker choice strategy and priority handling.

## [4.0.7] - 2024-05-13

### Changed

- Add ELU statistics to pool information.

## [4.0.6] - 2024-05-10

### Fixed

- Fix pools' `addTaskFunction()` type definition.

## [4.0.5] - 2024-05-09

### Fixed

- Avoid queued tasks redistribution on the errored worker node.

## [4.0.4] - 2024-05-08

### Fixed

- Disable `tasksStealingOnBackPressure` by default until performance issues under heavy load are sorted out.

## [4.0.3] - 2024-05-08

### Changed

- Optimize task(s) stealing by dequeuing task(s) from the last prioritized bucket.

## [4.0.2] - 2024-05-06

### Fixed

- Ensure poolifier worker task performance measurement requirements are synchronized with task function objects' worker choice strategies.

## [4.0.1] - 2024-05-02

### Fixed

- Ensure dynamic worker node are initialized with sensible worker node usage default values to avoid worker choice strategies biased decisions.
- Account for tasks wait time in task execution time computation in worker choice strategies to avoid biased decisions under load with several prioritized task functions and tasks queue enabled.

## [4.0.0] - 2024-04-30

### Changed

- Support per task function(s) priority and worker choice strategy definition via a task function object: `{ taskFunction: (data?: Data) => Response | Promise<Response>, priority?: number, strategy?: WorkerChoiceStrategy }`.
- Add priority queue based tasks queueing. One priority queue is divided into prioritized buckets to avoid queued tasks starvation under load.
- BREAKING CHANGE: `listTaskFunctionNames()` to `listTaskFunctionsProperties()` in pool and worker API returning registered task functions properties.
- BREAKING CHANGE: `strategy` field in pool information renamed to `defaultStrategy`.

### Fixed

- Ensure worker choice strategy options changes at runtime are propagated to poolifier workers.

## [3.1.30] - 2024-04-22

### Fixed

- Fix `transferList` argument type definition.

## [3.1.29] - 2024-04-02

### Fixed

- Fix possible race condition at worker node recreation on worker `error` and `exit` events.

## [3.1.28] - 2024-04-01

### Fixed

- Ensure the minimum number of workers on a started pool is guaranteed.

## [3.1.27] - 2024-03-27

### Fixed

- Fix publishing on JSR, take 4.

## [3.1.26] - 2024-03-27

### Fixed

- Fix publishing on JSR, take 3.

## [3.1.25] - 2024-03-27

### Fixed

- Fix publishing on JSR, take 2.

## [3.1.24] - 2024-03-27

### Fixed

- Fix publishing on JSR.

## [3.1.23] - 2024-03-27

### Changed

- Publish on JSR.

## [3.1.22] - 2024-03-15

### Fixed

- Fix pool event emitter registered callbacks removal at `destroy()`.

## [3.1.21] - 2024-02-22

### Fixed

- Fix null exception regression: [#1496](https://github.com/poolifier/poolifier/issues/1496).

## [3.1.20] - 2024-02-11

### Fixed

- Ensure `worker_threads` workers are unreferenced at termination.

## [3.1.19] - 2024-01-16

### Fixed

- Fix possible null exception at task finishing handling.

### Changed

- Optimize Deque implementation to improve tasks queueing performance.

## [3.1.18] - 2024-01-06

### Fixed

- Fix dynamic pool with minimum number of workers set to zero: [#1748](https://github.com/poolifier/poolifier/issues/1748).

## [3.1.17] - 2024-01-05

### Changed

- Improve performance by clean up unneeded condition checks on hot code paths.

## [3.1.16] - 2024-01-03

### Fixed

- Add missing type to TS type definitions.

## [3.1.15] - 2024-01-02

### Fixed

- Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).

## [3.1.15-0] - 2024-01-02

### Fixed

- Fix CommonJS support with TypeScript: [#1821](https://github.com/poolifier/poolifier/issues/1821).

## [3.1.14] - 2024-01-01

### Fixed

- Properly handle dynamic pool with zero minimum size.

## [3.1.13] - 2023-12-30

### Changed

- Reduce branching in several hot code paths.
- Use faster object cloning implementation.

## [3.1.12] - 2023-12-27

### Fixed

- Fix tasks redistribution triggers at pool destroying.

### Changed

- Switch TypeScript module resolution to Node16.

## [3.1.12-0] - 2023-12-27

### Fixed

- Fix tasks redistribution triggers at pool destroying.

## [3.1.11] - 2023-12-24

### Fixed

- Avoid worker node cross tasks stealing.
- Ensure only half the pool worker nodes can steal tasks.

## [3.1.10] - 2023-12-23

### Changed

- Avoid useless branching on pool type.

## [3.1.9] - 2023-12-22

### Changed

- Readd ThreadPoolOptions and ClusterPoolOptions TS type aliases to PoolOptions.

## [3.1.8] - 2023-12-21

### Fixed

- Fix default worker weight computation.
- Fix possible null exception at pool destroying.

## [3.1.7] - 2023-12-20

### Fixed

- Ensure worker choice strategies implementation wait for worker node readiness: [#1748](https://github.com/poolifier/poolifier/issues/1748).

## [3.1.6] - 2023-12-18

### Fixed

- Fix pool destroying with tasks queuing enabled.

## [3.1.5] - 2023-12-18

### Added

- Add queued tasks end timeout support to worker node termination.

## [3.1.4] - 2023-12-18

### Fixed

- Make more robust the fix for possible null exception at handling task execution response.

## [3.1.3] - 2023-12-17

### Fixed

- Fix possible null exception at handling task execution response.

## [3.1.2] - 2023-12-17

### Fixed

- Wait for queued tasks to end at worker node termination.

## [3.1.1] - 2023-12-16

### Fixed

- Fix pool options TS type definition.

## [3.1.0] - 2023-12-16

### Changed

- TypeScript breaking change: merge ThreadPoolOptions and ClusterPoolOptions types into PoolOptions type.

## [3.0.14] - 2023-12-13

### Fixed

- Fix possible null exception with worker_threads pools.

## [3.0.13] - 2023-12-12

### Fixed

- Ensure worker choice strategy wait for worker nodes readiness.

### Changed

- Remove infinite retries support in worker choice strategy to avoid configuration leading to possible infinite recursion or loop.

## [3.0.12] - 2023-12-12

### Changed

- Add infinite retries support in worker choice strategy.

## [3.0.11] - 2023-12-11

### Fixed

- Ensure pool asynchronous resource properly track tasks execution.

## [3.0.10] - 2023-12-08

### Changed

- Add a fastpath when tasks stealing or redistribution is impossible.

## [3.0.9] - 2023-11-26

### Fixed

- Remove all pool events listener at pool destroying.
- Remove all worker node events listener at worker node destroying.
- Fix worker node event emitter listeners handling memory leak at pool options runtime change.

## [3.0.8] - 2023-11-25

### Fixed

- Ensure continuous tasks stealing on idle start at worker node idling.

## [3.0.7] - 2023-11-24

### Changed

- Make continuous tasks stealing start at worker node idling.

## [3.0.6] - 2023-11-24

### Fixed

- Ensure pool statuses are checked at initialization, `start()` or `destroy()`.
- Ensure pool `ready` event can be emitted after several `start()/destroy()` cycles.

## [3.0.5] - 2023-10-27

### Fixed

- Ensure pool `ready` event can be emitted only once.

## [3.0.4] - 2023-10-20

### Changed

- Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
- Use builtin retry mechanism in worker choice strategies instead of custom one.

## [3.0.3] - 2023-10-19

### Fixed

- Avoid null exception at sending message to worker.
- Avoid null exception at checking worker node readiness.

## [3.0.2] - 2023-10-17

### Fixed

- 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).

## [3.0.1] - 2023-10-16

### Fixed

- Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).

### Changed

- Switch the worker node eventing code to `EventTarget` API.

## [3.0.0] - 2023-10-08

### Changed

- Remove Node.js 16.x.x (EOL) support.

## [2.7.5] - 2023-10-03

### Changed

- Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.

## [2.7.4] - 2023-09-25

### Fixed

- Fix source maps (bundler issue).

## [2.7.3] - 2023-09-24

### Changed

- Convert pool event emitter to event emitter async resource.

## [2.7.2] - 2023-09-23

### Changed

- Add source maps to npm package to ease debugging.

### Added

- Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).

## [2.7.1] - 2023-09-20

### Fixed

- Ensure worker message listener used one time are removed after usage.

## [2.7.0] - 2023-09-19

### Fixed

- Fix task stealing related tasks queue options handling at runtime.

### Changed

- Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.

### Added

- Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
- Stricter worker constructor arguments validation.

## [2.6.45] - 2023-09-17

### Changed

- Disable publication on GitHub packages registry on release until authentication issue is fixed.

### Added

- Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
- Add `start()` method to pool API to start the minimum number of workers.
- Add `taskStealing` and `tasksStealingOnBackPressure` to tasks queue options to whether enable task stealing or not and whether enable tasks stealing under back pressure or not.
- Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).

## [2.6.44] - 2023-09-08

### Fixed

- Use a dedicated PAT to publish on GitHub packages registry.

### Added

- Publish on GitHub packages registry on release.

### Changed

- Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).

## [2.6.43] - 2023-09-08

### Added

- Publish on GitHub packages registry on release.

### Changed

- Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).

## [2.6.42] - 2023-09-06

### Changed

- Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...

## [2.6.41] - 2023-09-03

### Changed

- Optimize worker choice strategies implementation.

## [2.6.40] - 2023-09-01

### Fixed

- Do not pre-choose in WRR worker choice strategy to avoid bias.
- Avoid array out of bound in worker choice strategies after worker node removal.

## [2.6.39] - 2023-08-30

### Fixed

- Fix race condition in worker choice strategies at worker node info querying while not yet initialized.

## [2.6.38] - 2023-08-30

### Added

- Bundle typescript types declaration into one file.

### Changed

- Improve interleaved weighted round robin worker choice strategy implementation.

## [2.6.37] - 2023-08-28

### Fixed

- Ensure unused worker usage statistics are deleted at runtime.

### Changed

- Rename worker choice strategy options `choiceRetries` to `retries`.
- Avoid unnecessary branching in worker choice strategies.

## [2.6.36] - 2023-08-27

### Fixed

- Fix pool `execute()` arguments check.

### Changed

- Make continuous tasks stealing algorithm less aggressive.
- Fine tune tasks stealing algorithm under back pressure.

## [2.6.35] - 2023-08-25

### Fixed

- Don't account worker usage statistics for tasks that have failed.
- Fix pool information runtime and wait time median computation.

### Changed

- Update simple moving average implementation to use a circular buffer.
- Update simple moving median implementation to use a circular buffer.
- Account for stolen tasks in worker usage statistics and pool information.

### Added

- Continuous tasks stealing algorithm.

## [2.6.34] - 2023-08-24

### Fixes

- Avoid cascading tasks stealing under back pressure.

### Changed

- Add fastpath to queued tasks rescheduling.

## [2.6.33] - 2023-08-24

### Fixed

- Fix queued tasks rescheduling.

### Changed

- Rename tasks queue options `queueMaxSize` to `size`.

### Added

- Task stealing scheduling algorithm if tasks queueing is enabled.

## [2.6.32] - 2023-08-23

### Fixed

- Ensure no task can be executed when the pool is destroyed.

### Added

- Add `queueMaxSize` option to tasks queue options.
- Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
- Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.

## [2.6.31] - 2023-08-20

### Fixed

- Fix worker choice strategy retries mechanism in some edge cases.

### Changed

- Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
- Remove the experimental status of the `LEAST_ELU` worker choice strategy.

## [2.6.30] - 2023-08-19

### Fixed

- Ensure pool event `backPressure` is emitted.
- Ensure pool event `full` is emitted only once.
- Ensure worker node cannot be instantiated without proper arguments.

## [2.6.29] - 2023-08-18

### Fixed

- Fix race condition between readiness and task functions worker message handling at startup.
- Fix duplicate task function worker usage statistics computation per task function.
- Update task function worker usage statistics if and only if there's at least two different task functions.
- Fix race condition at task function worker usage executing task computation leading to negative value.

### Added

- 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).
- Use back pressure detection in worker choice strategies.
- Add worker choice strategies retries mechanism if no worker is eligible.

## [2.6.28] - 2023-08-16

### Fixed

- Ensure pool workers are properly initialized.

### Added

- HTTP server pool examples: express-cluster, express-hybrid.

### Changed

- Remove now useless branching in worker hot code path.

## [2.6.27] - 2023-08-15

### Fixed

- Add `KillHandler` type definition to exported types.

### Added

- Add `destroy` event to pool API.

## [2.6.26] - 2023-08-15

### Added

- Add kill handler to worker options allowing to execute custom code when worker is killed.
- Add `listTaskFunctions()` method to pool API.
- SMTP client pool example: nodemailer.

## [2.6.25] - 2023-08-13

### Added

- HTTP server pool examples: fastify-cluster, fastify-hybrid.
- WebSocket server pool examples: ws-cluster, ws-hybrid.

## [2.6.24] - 2023-08-12

### Added

- Add array of transferable objects to the `execute()` method arguments.
- WebSocket server pool examples: ws-worker_threads.

## [2.6.23] - 2023-08-11

### Fixed

- 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.

### Added

- HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
- HTTP server pool examples: express-worker_threads, fastify-worker_threads.

## [2.6.22] - 2023-08-10

### Fixed

- Add missing `types` field to package.json `exports`.

### Changed

- Structure markdown documentation (PR #811).

## [2.6.21] - 2023-08-03

### Changed

- Improve code documentation.
- Code refactoring and cleanup for better maintainability and readability.

## [2.6.20] - 2023-07-21

### Fixed

- Fix queued tasks redistribution on error task execution starvation.
- Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.

### Changed

- Drastically reduce lookups by worker in the worker nodes.

## [2.6.19] - 2023-07-20

### Added

- Dedicated internal communication channel for worker_threads pools.

## [2.6.18] - 2023-07-19

### Changed

- Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.

## [2.6.17] - 2023-07-16

### Added

- Add `listTaskFunctions()` method to worker API.

## [2.6.16] - 2023-07-12

### Fixed

- Fix pool startup detection.
- Fix worker task functions handling.

## [2.6.15] - 2023-07-11

### Added

- Take into account worker node readiness in worker choice strategies.

## [2.6.14] - 2023-07-10

### Fixed

- Fix task function statistics tracking.

## [2.6.13] - 2023-07-10

### Added

- Add per task function statistics tracking.
- Add public methods to manipulate the worker task functions at runtime.

## [2.6.12] - 2023-07-09

### Fixed

- Workaround import issue with `node:os` module in node 16.x.x.

## [2.6.11] - 2023-07-09

### Fixed

- Fix pool readiness semantic.

## [2.6.10] - 2023-07-08

### Fixed

- Ensure workers are not recreated on error at pool startup.

### Added

- Add `ready` and `strategy` fields to pool information.
- Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
- Add dynamic pool sizing checks.

## [2.6.9] - 2023-07-07

### Fixed

- Recreate the right worker type on uncaught exception.

### Added

- Add minimum and maximum to internal measurement statistics.
- Add `runTime` and `waitTime` to pool information.
- Check worker inactive time only on dynamic worker.

## [2.6.8] - 2023-07-03

### Fixed

- Brown paper bag release to fix version handling in pool information.

## [2.6.7] - 2023-07-03

### Fixed

- Ensure worker queued tasks at error are reassigned to other pool workers.

### Added

- Add pool `utilization` ratio to pool information.
- Add `version` to pool information.
- Add worker information to worker nodes.

## [2.6.6] - 2023-07-01

### Added

- Add safe helper `availableParallelism()` to help sizing the pool.

### Fixed

- Ensure message handler is only registered in worker.

## [2.6.5] - 2023-06-27

### Known issues

- Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782

### Fixed

- Artificial version bump to 2.6.5 to workaround publication issue.
- Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
- Ensure pool event is emitted before task error promise rejection.
- Fix queued tasks count computation.

### Removed

- Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.

## [2.6.4] - 2023-06-27

### Known issues

- Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782

### Fixed

- Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
- Ensure pool event is emitted before task error promise rejection.
- Fix queued tasks count computation.

### Removed

- Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.

## [2.6.3] - 2023-06-19

### Fixed

- Ensure no tasks are queued when trying to soft kill a dynamic worker.
- Update strategies internals after statistics computation.

### Changed

- Optimize O(1) queue implementation.

## [2.6.2] - 2023-06-12

### Fixed

- Fix new worker use after creation in dynamic pool given the current worker choice strategy.

## [2.6.1] - 2023-06-10

### Added

- Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).

### Fixed

- Fix average statistics computation: ensure failed tasks are not accounted.

## [2.6.0] - 2023-06-09

### Added

- Add `LEAST_ELU` worker choice strategy (experimental).
- Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.

### Changed

- Refactor pool worker node usage internals.
- Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
- Breaking change: pool information `info` property object fields have been renamed.

### Fixed

- Fix wait time accounting.
- Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
- Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.

## [2.5.4] - 2023-06-07

### Added

- Add Event Loop Utilization (ELU) statistics to worker tasks usage.

### Changed

- Compute statistics at the worker level only if needed.
- Add `worker_threads` options to thread pool options.

### Fixed

- Make the `LEAST_BUSY` strategy only relies on task runtime.

## [2.5.3] - 2023-06-04

### Changed

- Refine pool information content.
- Limit pool internals public exposure.

## [2.5.2] - 2023-06-02

### Added

- Add `taskError` pool event for task execution error.
- Add pool information `info` property to pool.
- Emit pool information on `busy` and `full` pool events.

## [2.5.1] - 2023-06-01

### Added

- Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
- Add `error` pool event for uncaught worker error.

## [2.5.0] - 2023-05-31

### Added

- Switch pool event emitter to `EventEmitterAsyncResource`.
- Add tasks wait time accounting in per worker tasks usage.
- Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).

### Changed

- Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.

## [2.4.14] - 2023-05-09

### Fixed

- Ensure no undefined task runtime can land in the tasks history.
- Fix median computation implementation once again.

### Added

- Unit tests for median and queue implementations.

## [2.4.13] - 2023-05-08

### Fixed

- Fix worker choice strategy options validation.
- Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.

## [2.4.12] - 2023-05-06

### Added

- Support multiple task functions per worker.
- Add custom worker weights support to worker choice strategies options.

### Changed

- Use O(1) queue implementation for tasks queueing.

### Fixed

- Fix median computation implementation.
- Fix fair share worker choice strategy internals update.

## [2.4.11] - 2023-04-23

### Changed

- Optimize free worker finding in worker choice strategies.

## [2.4.10] - 2023-04-15

### Fixed

- Fix typescript type definition for task function: ensure the input data is optional.
- Fix typescript type definition for pool execute(): ensure the input data is optional.

## [2.4.9] - 2023-04-15

### Added

- Add tasks queue enablement runtime setter to pool.
- Add tasks queue options runtime setter to pool.
- Add worker choice strategy options runtime setter to pool.

### Changed

- Remove the tasks queuing experimental status.

### Fixed

- Fix task function type definition and validation.
- Fix worker choice strategy options handling.

## [2.4.8] - 2023-04-12

### Fixed

- Fix message between main worker and worker type definition for tasks.
- Fix code documentation.

## [2.4.7] - 2023-04-11

### Added

- Add worker tasks queue options to pool options.

### Fixed

- Fix missing documentation.

## [2.4.6] - 2023-04-10

### Fixed

- Ensure one task at a time is executed per worker with tasks queueing enabled.
- Properly count worker executing tasks with tasks queueing enabled.

## [2.4.5] - 2023-04-09

### Added

- Use monotonic high resolution timer for worker tasks runtime.
- Add worker tasks median runtime to statistics.
- Add worker tasks queue (experimental).

## [2.4.4] - 2023-04-07

### Added

- Add `PoolEvents` enumeration and `PoolEvent` type.

### Fixed

- Destroy worker only on alive check.

## [2.4.3] - 2023-04-07

### Fixed

- Fix typedoc generation with inheritance.

## [2.4.2] - 2023-04-06

### Added

- Add `full` event to dynamic pool.
- Keep worker choice strategy in memory for conditional reuse.

### Fixed

- Fix possible negative worker key at worker removal in worker choice strategies.

## [2.4.1] - 2023-04-05

### Changed

- Optimize worker choice strategy for dynamic pool.

### Fixed

- Ensure dynamic pool does not alter worker choice strategy expected behavior.

## [2.4.0] - 2023-04-04

### Added

- Add `LESS_BUSY` worker choice strategy.

### Changed

- Optimize worker storage in pool.
- Optimize worker alive status check.
- BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
- Optimize `LESS_USED` worker choice strategy.
- Update benchmark versus external threads pools.
- Optimize tasks usage statistics requirements for worker choice strategy.

### Fixed

- Ensure trimmable characters are checked at pool initialization.
- Fix message id integer overflow.
- Fix pool worker removal in worker choice strategy internals.
- Fix package publication with pnpm.

## [2.4.0-3] - 2023-04-04

### Added

- Add `LESS_BUSY` worker choice strategy.

### Changed

- Optimize worker storage in pool.
- Optimize worker alive status check.
- BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
- Optimize `LESS_USED` worker choice strategy.
- Update benchmark versus external threads pools.

### Fixed

- Ensure trimmable characters are checked at pool initialization.
- Fix message id integer overflow.
- Fix pool worker removal in worker choice strategy internals.
- Fix package publication with pnpm.

## [2.4.0-2] - 2023-04-03

### Added

- Add `LESS_BUSY` worker choice strategy.

### Changed

- Optimize worker storage in pool.
- Optimize worker alive status check.
- BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
- Optimize `LESS_USED` worker choice strategy.

### Fixed

- Ensure trimmable characters are checked at pool initialization.
- Fix message id integer overflow.
- Fix pool worker removal in worker choice strategy internals.
- Fix package publication with pnpm.

## [2.4.0-1] - 2023-04-03

### Added

- Add `LESS_BUSY` worker choice strategy.

### Changed

- Optimize worker storage in pool.
- Optimize worker alive status check.
- BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
- Optimize `LESS_USED` worker choice strategy.

### Fixed

- Ensure trimmable characters are checked at pool initialization.
- Fix message id integer overflow.
- Fix pool worker removal in worker choice strategy internals.

## [2.4.0-0] - 2023-04-03

### Added

- Add `LESS_BUSY` worker choice strategy.

### Changed

- Optimize worker storage in pool.
- Optimize worker alive status check.
- BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
- Optimize `LESS_USED` worker choice strategy.

### Fixed

- Ensure trimmable characters are checked at pool initialization.
- Fix message id integer overflow.
- Fix pool worker removal in worker choice strategy internals.

## [2.3.10] - 2023-03-18

### Fixed

- Fix package.json `exports` syntax for ESM and CommonJS.

### Changed

- Permit SemVer pre-release publication.

## [2.3.10-2] - 2023-03-18

### Fixed

- Fix package.json `exports` syntax for ESM and CommonJS.

## [2.3.10-1] - 2023-03-18

### Changed

- Permit SemVer pre-release publication.

## [2.3.10-0] - 2023-03-18

### Fixed

- Fix package.json `exports` syntax for ESM and CommonJS.

## [2.3.9] - 2023-03-18

### Changed

- Introduce ESM module support along with CommonJS one.

### Fixed

- Fix brown paper bag bug referencing the same object literal.

## [2.3.8] - 2023-03-18

### Changed

- Switch internal benchmarking code to benny.
- Switch to TypeScript 5.x.x.
- Switch rollup bundler plugins to core ones.
- Switch to TSDoc syntax.
- Enforce conventional commits.

### Fixed

- Fix random integer generator.
- Fix worker choice strategy pool type identification at initialization.

## [2.3.7] - 2022-10-23

### Changed

- Switch to open collective FOSS project funding platform.
- Switch to ts-standard linter configuration on TypeScript code.

### Fixed

- Fixed missing async on pool execute method.
- Fixed typing in TypeScript example.
- Fixed types in unit tests.

## [2.3.6] - 2022-10-22

### Changed

- Cleanup pool attributes and methods.
- Refine error types thrown.

### Fixed

- Fix continuous integration build on windows.
- Fix code coverage reporting by using c8 instead of nyc.

## [2.3.5] - 2022-10-21

### Changed

- Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
- Optimize tasks usage lookup implementation.

### Fixed

- Fix missed pool event emitter type export.
- Fix typedoc documentation generation.

## [2.3.4] - 2022-10-17

### Added

- Fully automate release process with release-it.

### Changed

- Optimize fair share task scheduling algorithm implementation.
- Update benchmark versus external pools results with latest version.

## [2.3.3] - 2022-10-15

### Added

- Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.

## [2.3.2] - 2022-10-14

### Changed

- Optimize fair share worker selection strategy implementation.

### Fixed

- Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.

## [2.3.1] - 2022-10-13

### Added

- Pool worker choice strategies:
  - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
  - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.

## [2.2.2] - 2022-10-09

### Fixed

- Fixed `README.md` file.

## [2.2.1] - 2022-10-08

### Added

- Dynamic worker choice strategy change at runtime.

## [2.2.0] - 2022-01-05

### Breaking Changes

- Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.

## [2.1.0] - 2021-08-29

### Added

- Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.

### Breaking Changes

- `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
- `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
- `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
- `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.

## [2.0.2] - 2021-05-12

### Bug fixes

- Fix `busy` event emission on fixed pool type

## [2.0.1] - 2021-03-16

### Bug fixes

- Check if pool options are properly set.
- `busy` event is emitted on all pool types.

## [2.0.0] - 2021-03-01

### Bug fixes

- Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).

### Breaking Changes

- `FullPool` event is now renamed to `busy`.
- `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
  _Find more details on our JSDoc._

- `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.

- We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.

### Pool options types declaration merge

`FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.

#### New `export` strategy

```js
// Before
const DynamicThreadPool = require('poolifier/lib/dynamic')
// After
const { DynamicThreadPool } = require('poolifier/lib/dynamic')
```

But you should always prefer just using

```js
const { DynamicThreadPool } = require('poolifier')
```

#### New type definitions for input data and response

For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.  
_This is not a limitation by poolifier but Node.js._

#### Public property replacements

`numWorkers` property is now `numberOfWorkers`

#### Internal (protected) properties and methods renaming

These properties are not intended for end users

- `id` => `nextMessageId`

These methods are not intended for end users

- `_chooseWorker` => `chooseWorker`
- `_newWorker` => `createWorker`
- `_execute` => `internalExecute`
- `_chooseWorker` => `chooseWorker`
- `_checkAlive` => `checkAlive`
- `_run` => `run`
- `_runAsync` => `runAsync`

## [1.1.0] - 2020-05-21

### Added

- ThreadWorker support async functions as option
- Various external library patches

## [1.0.0] - 2020-01-24

### Added

- FixedThreadPool implementation
- DynamicThreadPool implementation
- WorkerThread implementation to improve developer experience