Medium-Hard Analyze Back-of-Envelope Estimation Multiple Choice
Your system has 10K write QPS and 200K read QPS. Which architecture decision does this directly inform?
Analyze — Tests ability to break down and examine complex problems.
Answer Options
A Use a write-optimised NoSQL database only
B Add a read replica tier and a caching layer to handle the 20:1 read/write imbalance
C No special action needed — a single database handles both
D Reduce write frequency to balance the ratio
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Medium-Easy