RAM Is the New Disk
...<p>I was the third engineer at VoltDB and spent six years making that bet. It's not a good bet.<p>Maybe there are other factors, but if VoltDB could page out cold data to disk I think it would be at least 2x if not more successful. No one agreed with me so it never happened.<p>I saw so many use cases go out the door because hey you know what? RAM is expensive and it's cheaper to page out cold data. The scale where that cost starts to matter is not that big.