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Rubocop
Discontinued A Ruby static code analyzer and formatter, based on the community Ruby style guide. [Moved to: https://github.com/rubocop/rubocop] (by rubocop-hq)
Running rubocop might give you a few tips regarding naming conventions and best practices
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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retest
A trusty CLI companion to monitor file changes and automatically run the corresponding Ruby specs. Ready to assist on any Ruby project, no setup needed!
A great book by Sandi Metz is 99 bottles of OOP in Ruby where she explains heaps about refactoring. One of the best book I have read. I know you asked for article or videos but if you have time, it takes a day or two to read. I made a gem to help people refactor the same way she describes in the book. It will speed up your feedback loop when refactoring: retest