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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.
As others mentioned, the Plutus Pioneer video series is good and the Plutus Pioneer Discord is useful as well. You can also check out some open source contracts like the fractionalized NFT smart contract Fracada to see some reference smart contracts
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