LLD - Design — Online Shopping Cart
Why is eventual consistency often acceptable in e-commerce systems for some data, but not for order transactions?
Why is eventual consistency often acceptable in e-commerce systems for some data, but not for order transactions?
hard🧠 Conceptual Q10 of Q15
Step-by-Step Solution
Solution:
Step 1: Differentiate data types in e-commerce
Product catalog data can be slightly out of date without major issues, but order transactions must be accurate immediately.Step 2: Understand eventual consistency
Eventual consistency means data updates propagate over time, which is fine for non-critical data but risky for orders.Final Answer:
Because product catalog updates can tolerate delays, but order transactions require immediate accuracy -> Option AQuick Check:
Eventual consistency okay for catalog, not orders [OK]
Quick Trick: Orders need immediate consistency; catalogs can wait [OK]
Common Mistakes:
MISTAKES- Assuming all data must be instantly consistent
- Thinking eventual consistency causes crashes
- Ignoring importance of order accuracy
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