System design interview framework

"""
Source: https://www.hellointerview.com/learn/system-design/in-a-hurry/delivery
"""


1. Requirements (~5 minutes)
  a. Functional requirements - Top 3 "Users/Clients should be able to..." statements
  b. Non-functional requirements - "The system should be (able to)..." statements.
  c. Capacity estimation - ask to skip it until necessary
2. Core entities (~2 minutes)
3. API or System Interface (~5 minutes)
4. [Optional] Data Flow (~5 minutes) - The steps needed to transform the input into the output.
5. High Level Design (~10-15 minutes) - Boxes and arrows representing the servers/dbs/caches and how they interact.
6. Deep Dives (~10 minutes)