1st Round : 2 Easy LC questions \n\n2nd (LLD Round) : Design ```StackOverflow```\n\n3rd Round (HLD round)\nInterviewer started with some `Srping Boot` questions; then asked me to design ```truecaller``` with following constraints \n\n1. 2 servers only\n2. Unlimited storage on servers \n3. 2 GB Ram on each server \n\nSystem should be both ```available``` and ```consistent.```\n\nMy initial thought was to to store data in file on both the servers; writes should be done on both the servers; read can be redirected to anyone(using LB). Use available ram as cache; data can stored according to following format on a file -  \n```PhoneNumber | Name | Timestamp``` \n\nThere were some follow up questions asked to which i had no answer (or not optimal answer interviewer was looking for); if anyone reading this post has please post in comments. \n\n1. What will happen to writes if one of the two server goes down; how will other server be consistent once it\'s up. \n2. How will search work in case of cache miss\n3. How will system work in case downstream service is down (i releazed later that there is no downstream; it\'s kind of monolith system). But this was question was asked before also; if one is working on microservices what will happen to overall system if downstream service goes down. \n\nResult : **Rejected**\n\n

1st Round : 2 Easy LC questions \n\n2nd (LLD Round) : Design StackOverflow\n\n3rd Round (HLD round)\nInterviewer started with some Srping Boot questions; then a