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autoscale-desired-count
Advanced tools
estimate the number of processes required to keep up with the current demand
estimate the number of processes required to keep up with the current demand
This module is installed via npm:
$ npm install autoscale-desired-count
number
Estimate the number of processes required to keep up with the current demand.
Parameter | Type | Description |
---|---|---|
demand | number | the number of jobs that need to be run |
opts.concurrency | number | the number of concurrent jobs the worker processes. |
opts.deadline | number | the time practically all jobs should be completed within. |
opts.meanProcessTime | number | mean job processing time. |
opts.requiredCompletionPercentile | number | percentile of jobs that should happen within the deadline. |
opts.stddev | number | standard deviation (1σ) of job processing time: 68% completed within ± this (defaults to half the meanProcessTime). |
opts.target | number | the number of seconds within which the desired % of tasks will complete. This will be calculated using other opts if not provided. |
Get the number of workers required to process 500 jobs within 1 minute given each job takes about 10 seconds to run and each worker only runs a single job at a time
const getAutoscaleDesiredCount = require('autoscale-desired-count');
const opts = {
concurrency: 1,
deadline: 60,
meanProcessTime: 10
};
const jobs = 500;
const count = getAutoscaleDesiredCount(jobs, opts);
The BSD License
Copyright (c) 2020, Andrew Harris
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
FAQs
estimate the number of processes required to keep up with the current demand
We found that autoscale-desired-count demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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