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guv

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Grid Utilization Virgilante

github.com/flowhub/guv

flowhub/guv

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# guv 0.3.1 Released: December 27, 2017 Bugfixes * Fixed CoffeeScript registration when importing API from plain JavaScript # guv 0.3.0 Released: October 22, 2017 Bugfixes * Fixed wrong scaling when two different apps have the same dyno name. Contributed by @timlesallen * Fixed over-agressive scaling decisions with very tight deadlines (issue #64). Contributed by @timlesallen # guv 0.2.0 Released: February 21, 2017 * Now fetches current number of workers from Heroku API before doing scaling calculation This doubles the number of Heroku API requests made per app. Normally not a problem, but since Heroku API quotas are per account, accounts which manage many apps may now go over quota. In this case use two or more Heroku accounts. # guv 0.1.11 Released: February 10, 2016 * Add tool `guv-heroku-workerstats`, for calculating startup/shutdown times of workers # guv 0.1.9 Released: Feburary 2, 2016. * Take `concurrency` into account when scaling. New per-role configuration key. For workers with AMQP `prefetch` setting / concurrency>1 , we were overestimating the number of required workers. We assumed that each new job would add processing time P to the waiting time, instead of P/concurrency amortized. # guv 0.1.7 Released: December 18, 2015. * Fix hysteresis to go down gradually, instead of requiring history window to be below current Could cause a high number of workers to sustain when they were no longer need, in cases periods of fluctuating low demand after very high demand. # guv 0.1.5 Released: December 18, 2015. * Added tool `guv-newrelic-events`, to download. Can be used to analyze guv performance. * Fix bug #59, was scaling to minimum instead of maximum on unrealizable config * guv-validate: Error on configurations which are impossible to realize # guv 0.1.3 * Added tool `guv-update-jobstats`, to automate updating processing/stddev estimates in config file. If you use MsgFlo with New Relic, you can get the input data using `msgflo-jobstats-newrelic`. # guv 0.1.2 * Implemented hysteresis, take history into account when scaling. * Fix bug #8, failing to scale everything if some queues missing # guv 0.1.0 Released: November 25, 2015. * First public release. [Blogpost announcement](http://www.jonnor.com/2015/11/guv-automatic-scaling/).