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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.
SDL2 is a C interface, so there's no objects (thus no OOP). There's SDL2pp which wraps it in a C++ interface, but honestly you shouldn't worry about that yet. Learn OOP from school and start to apply it as you get comfortable with it, for now just stick to the C interface and focus on #1.
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