X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=README.md;h=e76dc427453b2062645d34f992a098e2093c3952;hb=b80e10df8405b314ca192edbc9a079dffcc6305b;hp=3001f098fdb0ba551ea6416bbabe5ab4b8d408f1;hpb=1c277f5889dcbfed65ca1862efba68198dcaa99c;p=poolifier.git diff --git a/README.md b/README.md index 3001f098..e76dc427 100644 --- a/README.md +++ b/README.md @@ -29,7 +29,7 @@ ## Why Poolifier? -Poolifier is used to perform CPU intensive and I/O intensive tasks on nodejs servers, it implements worker pools using [worker-threads](https://nodejs.org/api/worker_threads.html#worker_threads_worker_threads) and cluster pools using [Node.js cluster](https://nodejs.org/api/cluster.html) modules. +Poolifier is used to perform CPU intensive and I/O intensive tasks on nodejs servers, it implements worker pools using [worker-threads](https://nodejs.org/api/worker_threads.html#worker_threads_worker_threads) and cluster pools using [cluster](https://nodejs.org/api/cluster.html) Node.js modules. With poolifier you can improve your **performance** and resolve problems related to the event loop. Moreover you can execute your tasks using an API designed to improve the **developer experience**. Please consult our [general guidelines](#general-guidance). @@ -122,15 +122,17 @@ const pool = new FixedThreadPool(availableParallelism(), './yourWorker.js', { onlineHandler: () => console.info('worker is online') }) +pool.emitter.on(PoolEvents.ready, () => console.info('Pool is ready')) pool.emitter.on(PoolEvents.busy, () => console.info('Pool is busy')) // or a dynamic worker-threads pool -const pool = new DynamicThreadPool(availableParallelism() / 2, availableParallelism(), './yourWorker.js', { +const pool = new DynamicThreadPool(Math.floor(availableParallelism() / 2), availableParallelism(), './yourWorker.js', { errorHandler: e => console.error(e), onlineHandler: () => console.info('worker is online') }) pool.emitter.on(PoolEvents.full, () => console.info('Pool is full')) +pool.emitter.on(PoolEvents.ready, () => console.info('Pool is ready')) pool.emitter.on(PoolEvents.busy, () => console.info('Pool is busy')) // the execute method signature is the same for both implementations, @@ -229,17 +231,17 @@ An object with these properties: ### `pool.execute(data, name)` `data` (optional) An object that you want to pass to your worker implementation -`name` (optional) A string with the task function name that you want to execute on the worker. Default: `'default'` -This method is available on both pool implementations and returns a promise. +`name` (optional) A string with the task function name that you want to execute on the worker. Default: `'default'` + +This method is available on both pool implementations and returns a promise with the task function execution response. ### `pool.destroy()` -Destroy method is available on both pool implementations. -This method will call the terminate method on each worker. +This method is available on both pool implementations and will call the terminate method on each worker. ### `class YourWorker extends ThreadWorker/ClusterWorker` -`taskFunctions` (mandatory) The task function or task functions object that you want to execute on the worker +`taskFunctions` (mandatory) The task function or task functions object `{ name_1: fn_1, ..., name_n: fn_n }` that you want to execute on the worker `opts` (optional) An object with these properties: - `maxInactiveTime` (optional) - Max time to wait tasks to work on in milliseconds, after this period the new worker will die. @@ -248,12 +250,37 @@ This method will call the terminate method on each worker. If `killBehavior` is set to `KillBehaviors.SOFT` your tasks have no timeout and your workers will not be terminated until your task is completed. Default: `60000` -- `killBehavior` (optional) - Dictates if your async unit (worker/process) will be deleted in case that a task is active on it. +- `killBehavior` (optional) - Dictates if your worker will be deleted in case that a task is active on it. **KillBehaviors.SOFT**: If `currentTime - lastActiveTime` is greater than `maxInactiveTime` but a task is still executing or queued, then the worker **won't** be deleted. **KillBehaviors.HARD**: If `currentTime - lastActiveTime` is greater than `maxInactiveTime` but a task is still executing or queued, then the worker will be deleted. This option only apply to the newly created workers. Default: `KillBehaviors.SOFT` +#### `YourWorker.hasTaskFunction(name)` + +`name` (mandatory) The task function name + +This method is available on both worker implementations and returns a boolean. + +#### `YourWorker.addTaskFunction(name, fn)` + +`name` (mandatory) The task function name +`fn` (mandatory) The task function + +This method is available on both worker implementations and returns a boolean. + +#### `YourWorker.removeTaskFunction(name)` + +`name` (mandatory) The task function name + +This method is available on both worker implementations and returns a boolean. + +#### `YourWorker.setDefaultTaskFunction(name)` + +`name` (mandatory) The task function name + +This method is available on both worker implementations and returns a boolean. + ## General guidance Performance is one of the main target of these worker pool implementations, we want to have a strong focus on this.