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developer-roadmap
Interactive roadmaps, guides and other educational content to help developers grow in their careers.
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Exercism - Scala Exercises
Crowd-sourced code mentorship. Practice having thoughtful conversations about code.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The website https://exercism.org/ has an exercise track to complete, with mentoring. Which is not so good to get started. But it works better once you got the basics. Because you then have to puzzle on getting through.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.