URL Shortner / Expander Solution Design

Reading Time: 2 minutes So this would be new set blog post and my videos on LetsDoCoding. In this particular post we shall be discussing shortly a very simplistic and bare minimum Solution Design for URL Expander and Shortner Service, very similar to Bit.Ly. I have asked this question in quite a few Interviews I have taken in the Initial interview rounds and this post covers all the aspects.

Cloud based solution design.
Deployment Strategy and replication for better UX
Services and Contracts Design
Database and ER Model Design.
You can refer the video on youtube for complete details, but we shall be discussing some pointers in this post. This question is targeted for interview questions and discussions on system and solution design. So Lets Begin

Managed Identities

Reading Time: 2 minutes Managed Identities are cloud based Identities which are offered in SaaS model where you delegate all the Identity Management including credentials storage, security and a lot of other related aspects to cloud Provider. Cognito from AWS and Active Directory (AAD and AAD B2C) from Azure are prominent cloud provider followed by Auth0.

Why and How to use Explicit Interface Implementation

Reading Time: < 1 minute What would happen if you need to implement two interfaces with same member names. How would you do it. While this question seems simpler, its not actually in implementation as there are a few hidden tricks. In this video we try to cover the basic fundamentals of the Explicit Interface Implementation and also do a quick hands on how to do it.

Custom MongoDb Configuration Provider for Asp.net Core 3.1

Reading Time: 5 minutes round four years ago when .Net Core was in its early stages, I wrote back a Configuration provider for .net core 1.x. This has been a long time. The package did picked up very well and there were multiple downloads and a few queries as well. Many people would never know that .net core started with json project files. But since then a lot changed and my package went obsolete.