Requirements

Functional Requirements:

List the key functional requirements for the system

1. user and guest mode availability
2. For user separate web page to track and controll the generated url
3. for fast access need direct url short service accessibility where user can input their url to short the URL.
4. need session base history so that guest user can see their generated short url even after refresh the page. this is handy feature if they somehow forget to copy a generated short url and immedieately generate another one they can see the previous one.
5. need optional option to set url time validity as well

Non-Functional Requirements:

List the key non-functional requirements

we are going to design this system with target of 2cr user a day and at the same time maximum of 2000 user request.

as the system is used by so many users we need to have multi server architecture and we also need to have n tier database architecture to recover any database server failer. and need multiple server to handle those simultanous request at the same time.

Capacity Estimation

Estimate the scale of the system. Consider daily active users, read/write ratio, storage requirements, bandwidth, and any relevant QPS calculations...

API Design

To make our server more secure we can develop seperate API server to talk with our database this will protect our database by minimizing the database action.

in this case we only few endpoint such as

user/detials

url mapper (to find the main url from generate url)

url_insert(CRUD)

High-Level Design

Describe the overall system architecture. Identify the main components needed to solve the problem end-to-end. Use the diagramming tool to create a block diagram.

Database Design

Define the data model. Identify the main entities, their attributes, and relationships. Consider the choice of database type (SQL vs NoSQL) and justify your decision based on access patterns...

Detailed Component Design

Deep dive into 2-3 key components. Explain how they work, how they scale, discuss tradeoffs, capacity, and any relevant algorithms or data structures.