ExpertHard1 markMultiple Choice
Domain 4.2: Design an application architectureDomain 4Application ArchitectureRedisHigh Availability
AZ-305 · Question 46 · Domain 4.2: Design an application architecture
A global gaming company uses Azure Cache for Redis to store player session state and real-time leaderboard data.
The architecture must meet the following requirements:
- The cache must be replicated across two Azure regions (US East and Europe West).
- In the event of a regional outage, the secondary region must take over automatically with zero data loss.
- The cache must support datasets larger than 100 GB.
Which Azure Cache for Redis tier must you recommend?
A global gaming company uses Azure Cache for Redis to store player session state and real-time leaderboard data.
The architecture must meet the following requirements:
- The cache must be replicated across two Azure regions (US East and Europe West).
- In the event of a regional outage, the secondary region must take over automatically with zero data loss.
- The cache must support datasets larger than 100 GB.
Which Azure Cache for Redis tier must you recommend?
Answer options:
A.
Basic tier
B.
Standard tier
C.
Premium tier
D.
Enterprise tier
How to approach this question
Identify the requirement for 'cross-region automatic failover with zero data loss' (Active Geo-Replication), which is exclusive to the Enterprise tier.
Full Answer
D.Enterprise tier✓ Correct
Azure Cache for Redis offers several tiers. Premium supports passive geo-replication, where the secondary cache is read-only, failover is manual, and data loss can occur. The Enterprise and Enterprise Flash tiers support Active Geo-Replication. This creates an active-active cluster across multiple regions, providing automatic failover, 99.999% availability, and zero data loss, which is required for this scenario.
Common mistakes
Choosing Premium tier, assuming its geo-replication is automatic and lossless. Premium geo-replication is passive and manual.
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