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Which feature of e-commerce systems most contributes to their real-world complexity?

easy🧠 Conceptual Q2 of Q15
LLD - Design — Online Shopping Cart
Which feature of e-commerce systems most contributes to their real-world complexity?
AUsing a single server without load balancing
BDisplaying only static product images
CHandling concurrent transactions and inventory updates
DServing only one user at a time
Step-by-Step Solution
Solution:

  1. Step 1: Identify key e-commerce challenges

    Concurrent transactions and inventory updates require careful coordination to avoid errors like overselling.

  2. Step 2: Contrast with incorrect options

    Static images and single-user serving do not create complexity; real complexity arises from concurrency and data consistency.

  3. Final Answer:

    Handling concurrent transactions and inventory updates -> Option C

  4. Quick Check:

    Concurrency and inventory = complexity [OK]
Quick Trick: Concurrency in transactions drives complexity [OK]
Common Mistakes:
MISTAKES
  • Confusing static content with complexity
  • Ignoring concurrency issues
  • Assuming single-user systems are complex

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