[Disclaimer I work at Cliqz] There is a lot of systems under the hood, depending if it's the main index or the freshness index. But if I have to pick one as dat

[Disclaimer I work at Cliqz] There is a lot of systems under the hood, depending if it's the main index or the freshness index. But if I have to pick one as database it should be Keyvi (https://github.com/KeyviDev/keyvi https://github.com/KeyviDev/keyvi). FYI, there will be a bunch of articles regarding search in the next week.