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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.
Heard on the Street and A Practical Guide to Quantitative Finance Interviews are pretty standard. You can find some copies online if you dig around. I also found this: https://github.com/dwcoder/QuantitativePrimer to be useful when I was prepping.
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