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 - Switch pool event emitter to `EventEmitterAsyncResource`.
13 - Add tasks wait time accounting in per worker tasks usage.
17 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
19 ## [2.4.14] - 2023-05-09
23 - Ensure no undefined task runtime can land in the tasks history.
24 - Fix median computation implementation once again.
28 - Unit tests for median and queue implementations.
30 ## [2.4.13] - 2023-05-08
34 - Fix worker choice strategy options validation.
35 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
37 ## [2.4.12] - 2023-05-06
41 - Support multiple task functions per worker.
42 - Add custom worker weights support to worker choice strategies options.
46 - Use O(1) queue implementation for tasks queueing.
50 - Fix median computation implementation.
51 - Fix fair share worker choice strategy internals update.
53 ## [2.4.11] - 2023-04-23
57 - Optimize free worker finding in worker choice strategies.
59 ## [2.4.10] - 2023-04-15
63 - Fix typescript type definition for worker function: ensure the input data is optional.
64 - Fix typescript type definition for pool execute(): ensure the input data is optional.
66 ## [2.4.9] - 2023-04-15
70 - Add tasks queue enablement runtime setter to pool.
71 - Add tasks queue options runtime setter to pool.
72 - Add worker choice strategy options runtime setter to pool.
76 - Remove the tasks queuing experimental status.
80 - Fix worker function type definition and validation.
81 - Fix worker choice strategy options handling.
83 ## [2.4.8] - 2023-04-12
87 - Fix message between main worker and worker type definition for tasks.
88 - Fix code documentation.
90 ## [2.4.7] - 2023-04-11
94 - Add worker tasks queue options to pool options.
98 - Fix missing documentation.
100 ## [2.4.6] - 2023-04-10
104 - Ensure one task at a time is executed per worker with tasks queueing enabled.
105 - Properly count worker running tasks with tasks queueing enabled.
107 ## [2.4.5] - 2023-04-09
111 - Use monotonic high resolution timer for worker tasks runtime.
112 - Add worker tasks median runtime to statistics.
113 - Add worker tasks queue (experimental).
115 ## [2.4.4] - 2023-04-07
119 - Add `PoolEvents` enumeration and `PoolEvent` type.
123 - Destroy worker only on alive check.
125 ## [2.4.3] - 2023-04-07
129 - Fix typedoc generation with inheritance.
131 ## [2.4.2] - 2023-04-06
135 - Add `full` event to dynamic pool.
136 - Keep worker choice strategy in memory for conditional reuse.
140 - Fix possible negative worker key at worker removal in worker choice strategies.
142 ## [2.4.1] - 2023-04-05
146 - Optimize worker choice strategy for dynamic pool.
150 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
152 ## [2.4.0] - 2023-04-04
156 - Add `LESS_BUSY` worker choice strategy.
160 - Optimize worker storage in pool.
161 - Optimize worker alive status check.
162 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
163 - Optimize `LESS_USED` worker choice strategy.
164 - Update benchmarks versus external threads pools.
165 - Optimize tasks usage statistics requirements for worker choice strategy.
169 - Ensure trimmable characters are checked at pool initialization.
170 - Fix message id integer overflow.
171 - Fix pool worker removal in worker choice strategy internals.
172 - Fix package publication with pnpm.
174 ## [2.4.0-3] - 2023-04-04
178 - Add `LESS_BUSY` worker choice strategy.
182 - Optimize worker storage in pool.
183 - Optimize worker alive status check.
184 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
185 - Optimize `LESS_USED` worker choice strategy.
186 - Update benchmarks versus external threads pools.
190 - Ensure trimmable characters are checked at pool initialization.
191 - Fix message id integer overflow.
192 - Fix pool worker removal in worker choice strategy internals.
193 - Fix package publication with pnpm.
195 ## [2.4.0-2] - 2023-04-03
199 - Add `LESS_BUSY` worker choice strategy.
203 - Optimize worker storage in pool.
204 - Optimize worker alive status check.
205 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
206 - Optimize `LESS_USED` worker choice strategy.
210 - Ensure trimmable characters are checked at pool initialization.
211 - Fix message id integer overflow.
212 - Fix pool worker removal in worker choice strategy internals.
213 - Fix package publication with pnpm.
215 ## [2.4.0-1] - 2023-04-03
219 - Add `LESS_BUSY` worker choice strategy.
223 - Optimize worker storage in pool.
224 - Optimize worker alive status check.
225 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
226 - Optimize `LESS_USED` worker choice strategy.
230 - Ensure trimmable characters are checked at pool initialization.
231 - Fix message id integer overflow.
232 - Fix pool worker removal in worker choice strategy internals.
234 ## [2.4.0-0] - 2023-04-03
238 - Add `LESS_BUSY` worker choice strategy.
242 - Optimize worker storage in pool.
243 - Optimize worker alive status check.
244 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
245 - Optimize `LESS_USED` worker choice strategy.
249 - Ensure trimmable characters are checked at pool initialization.
250 - Fix message id integer overflow.
251 - Fix pool worker removal in worker choice strategy internals.
253 ## [2.3.10] - 2023-03-18
257 - Fix `exports` syntax for ESM and CommonJS.
261 - Permit SemVer pre-release publication.
263 ## [2.3.10-2] - 2023-03-18
267 - Fix `exports` syntax for ESM and CommonJS.
269 ## [2.3.10-1] - 2023-03-18
273 - Permit SemVer pre-release publication.
275 ## [2.3.10-0] - 2023-03-18
279 - Fix `exports` syntax for ESM and CommonJS.
281 ## [2.3.9] - 2023-03-18
285 - Introduce ESM module support along with CommonJS one.
289 - Fix brown paper bag bug referencing the same object literal.
291 ## [2.3.8] - 2023-03-18
295 - Switch internal benchmarking code to benny.
296 - Switch to TypeScript 5.x.x.
297 - Switch rollup bundler plugins to core ones.
298 - Switch to TSDoc syntax.
299 - Enforce conventional commits.
303 - Fix random integer generator.
304 - Fix worker choice strategy pool type identification at initialization.
306 ## [2.3.7] - 2022-10-23
310 - Switch to open collective FOSS project funding platform.
311 - Switch to ts-standard linter configuration on TypeScript code.
315 - Fixed missing async on pool execute method.
316 - Fixed typing in TypeScript example.
317 - Fixed types in unit tests.
319 ## [2.3.6] - 2022-10-22
323 - Cleanup pool attributes and methods.
324 - Refine error types thrown.
328 - Fix continuous integration build on windows.
329 - Fix code coverage reporting by using c8 instead of nyc.
331 ## [2.3.5] - 2022-10-21
335 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
336 - Optimize tasks usage lookup implementation.
340 - Fix missed pool event emitter type export.
341 - Fix typedoc documentation generation.
343 ## [2.3.4] - 2022-10-17
347 - Fully automate release process with release-it.
351 - Optimize fair share task scheduling algorithm implementation.
352 - Update benchmarks versus external pools results with latest version.
354 ## [2.3.3] - 2022-10-15
358 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
360 ## [2.3.2] - 2022-10-14
364 - Optimize fair share worker selection strategy implementation.
368 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
370 ## [2.3.1] - 2022-10-13
374 - Pool worker choice strategies:
375 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
376 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
378 ## [2.2.2] - 2022-10-09
382 - Fixed `README.md` file.
384 ## [2.2.1] - 2022-10-08
388 - Dynamic worker choice strategy change at runtime.
390 ## [2.2.0] - 2022-01-05
394 - Support only NodeJS version 16.x.x for cluster pool: upstream cluster API have changed on that version.
396 ## [2.1.0] - 2021-08-29
400 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
404 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
405 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
406 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
407 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
409 ## [2.0.2] - 2021-05-12
413 - Fix `busy` event emission on fixed pool type
415 ## [2.0.1] - 2021-03-16
419 - Check if pool options are properly set.
420 - `busy` event is emitted on all pool types.
422 ## [2.0.0] - 2021-03-01
426 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
430 - `FullPool` event is now renamed to `busy`.
431 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
432 _Find more details on our JSDoc._
434 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
436 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
438 ### Pool options types declaration merge
440 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
442 #### New `export` strategy
446 const DynamicThreadPool = require('poolifier/lib/dynamic')
448 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
451 But you should always prefer just using
454 const { DynamicThreadPool } = require('poolifier')
457 #### New type definitions for input data and response
459 For cluster worker and worker-thread pools, you can now only send and receive serializable data.
460 _This is not a limitation by poolifier but NodeJS._
462 #### Public property replacements
464 `numWorkers` property is now `numberOfWorkers`
466 #### Internal (protected) properties and methods renaming
468 These properties are not intended for end users
470 - `id` => `nextMessageId`
472 These methods are not intended for end users
474 - `_chooseWorker` => `chooseWorker`
475 - `_newWorker` => `createWorker`
476 - `_execute` => `internalExecute`
477 - `_chooseWorker` => `chooseWorker`
478 - `_checkAlive` => `checkAlive`
480 - `_runAsync` => `runAsync`
482 ## [1.1.0] - 2020-05-21
486 - ThreadWorker support async functions as option
487 - Various external library patches
489 ## [1.0.0] - 2020-01-24
493 - FixedThreadPool implementation
494 - DynamicThreadPool implementation
495 - WorkerThread implementation to improve developer experience