For a large-scale monolith migration to microservices, which approach best minimizes risk while ensuring uninterrupted service?

hard📝 Trade-off Q8 of 15

Microservices - Migration from Monolith

AMigrate all services simultaneously during a scheduled downtime

BIncrementally migrate services with continuous monitoring and fallback mechanisms

CReplace the monolith with a new microservices system without testing

DMigrate only the least critical services and postpone others indefinitely

Step-by-Step Solution

Solution:

Step 1: Understand risk minimization
Incremental migration allows gradual transition and issue detection.
Step 2: Importance of monitoring and fallback
Continuous monitoring detects problems early; fallback ensures service continuity.
Step 3: Evaluate other options
Big bang migration (B) risks downtime; skipping tests (C) is unsafe; partial migration (D) delays benefits.
Final Answer:
Incrementally migrate services with continuous monitoring and fallback mechanisms -> Option B
Quick Check:
Incremental + monitoring + fallback = safer migration [OK]

Quick Trick: Incremental migration with monitoring reduces risk [OK]

Common Mistakes:

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