id author title date pages extension mime words sentences flesch summary cache txt bibwild-wordpress-com-5665 Rails auto-scaling on Heroku – Bibliographic Wilderness .html text/html 3113 299 79 hirefire.io ended up looking more fully-featured and lesser priced than Rails Autoscale; so the main service of this post is just trying to increase visibility of hirefire.io and therefore competition in the field, which benefits us consumers. Here's what configuration Hirefire makes available if you are scaling on "queue time" like Rails Autoscale, configuration may vary for other metrics. If you have more than one heroku process type for workers — say, working on different queues — Hirefire can scale the independently, with entirely separate configuration. Here's what configuration Hirefire makes available for worker dynos scaling on "job queue" metric. Since hirefire only can interact with heroku API, for some metrics (including the "queue time" metric that is probably optimal for web dyno scaling) you have to configure your app to log regular statistics to heroku's "Logplex" system. ./cache/bibwild-wordpress-com-5665.html ./txt/bibwild-wordpress-com-5665.txt