00SKSachin KalsiHow can I authenticate a specific database in mongo ?I am using AWS EC2 (Ubuntu). There are many users in the system & they have applications which uses mongodb. Now I have to use the same mongodb but different db by keeping authentication (only for that specific DB), so that other users can use their ...Oct 13, 2017
00SKSachin KalsiIs really SQL databases not scalable ? How to choose what to choose ?Many tech websites, blogs etc claims that NoSQL is scalable where as SQL is not scalable. But facebook uses SQL. (It must be scalable). On what basis should I decide which DB to use ? An answer other than mentioning the basic difference between NoSQL...Sep 26, 2017
00SKSachin KalsiWhat exactly these IP address in Nslookup signifies ?I know that NSLOOKUP is a program to query Internet domain name servers. In the image, for amazon.in there are 3 IP addresses, for flipkart.com there is only 1 IP address. What exactly these IP addresses denotes ? A load balancer probably ?Sep 25, 2017
21SKSachin KalsiSystem Architecture of a bank?Assume that there is a bank which has more than 5 billion customers, 0.5 billion customers login to the online portal to do the usual transactions. How would be the system architecture for such a bank ? How they achieve sharding on the DB (since bank...Sep 19, 2017M