einhorn
Einhorn makes it easy to run multiple instances of an application server, all listening on the same port. You can also seamlessly restart your workers without dropping any requests. Einhorn requires minimal application-level support, making it easy to use with an existing project.
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Docs
Guides
Zeitwerk
Namespace
Optimized
Getting Started
Learn more about the Einhorn gem.
Playground
Test, play and inspect the gem for yourself