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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.
A jittered grid could work well, if you're dividing your world into chunks. You can take this class (+ all its dependencies), port it to whatever language you need, and instantiate it with the parameters you need. I detailed in this blog post the specific case I used it for.
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