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"According to a USA Today article from June 22, 1998, the initial plan with Terraserver was to list every single transaction in the history of the New York Stoc
by brwnll 11y ago
"According to a USA Today article from June 22, 1998, the initial plan with Terraserver was to list every single transaction in the history of the New York Stock Exchange online and make it searchable. But that was only a half terabyte of data. Microsoft needed something larger."
I'd be curious to see what the size of that collection is now, post advent of high frequency trading.
Side note, the article in no way explains why Google Earth would be considered a success story. The lead engineer from this project went on to Bing Maps, it's not as if MS decided geographic data wasn't worth doing.
- consz 11y agoThe US equity market does about 4b in transactions a day; let's say the average trade size is $1000 dollars (probably an aggressive estimate; I'd expect it actually to be higher), and you record the ticker (4bytes) + price(8) + quantity(8) for all the transactions, you'd get -- (4+8+8)(4e9/1000) 252 (trading days) / 1e9 = 20GB/year lets say you have these for 100 years, you'd still only have 2TB. And this if for the entire US equity market -- NYSE is only one of 11 protected exchanges (and only trades tape A), so the above estimates are pretty optimistic. Now, if you wanted to record every message and not just every transaction, then you get into serious data (on the order of ~2-5TB/day).