[Solved] Why does multi-datacenter replication improve Kafka availability even during network partitions? — Ans: Because clients can connect to any reachable datacenter with replicated data | Kafka

Kafka - Multi-Datacenter and Replication

Why does multi-datacenter replication improve Kafka availability even during network partitions?

ABecause Kafka merges all data instantly without conflicts

BBecause clients can connect to any reachable datacenter with replicated data

CBecause network partitions delete data in isolated datacenters

DBecause replication factor is ignored during partitions

Step-by-Step Solution

Solution:

Step 1: Understand network partitions and replication
Network partitions isolate datacenters but replicated data exists in each.
Step 2: Analyze client connection behavior during partitions
Clients connecting to reachable datacenters still access data, maintaining availability.
Final Answer:
Because clients can connect to any reachable datacenter with replicated data -> Option B
Quick Check:
Multi-datacenter replication + client reachability = availability during partitions [OK]

Quick Trick: Clients use reachable datacenter copies during partitions [OK]

Common Mistakes:

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