HLD + Hiring Manager: 2 Hour Told me to design Swiggy. Told me to make an algo on how to select which driver to select to assign order. Which Db will you use and why? Which language will you use and why? ( Was not able to give good answer here he was expecting technical answer here like CPu intensive and all) I was not able to come to approach of search nearby available driver at that instant so thing started to crumble there. Diff between redis and memcached.(In resume I mentioned both) How hasmap works internally. One Ds question on hasmap easy question. One console output question on JavaScript.
