What database do companies use for storing data points for charts (like Yahoo Finance charts, Google finance charts)? And what algorithms do they use for scaling down the data points when the span is 6 months, 1 year, 5 years, etc?
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Answer:
Cassandra is really good to store timeseries data like you are talking about .. A decent DataModel can really give you really fast access without any caching layers.
Ritwik Tewari at Quora Visit the source
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