ExpertMedium1 markMultiple Choice
AZ-305 · Question 48 · Domain 4.2: Design an Application Architecture
You are designing the caching strategy for a global web application.
The application relies on Azure Cache for Redis to store session state and reference data. You need to ensure that the Redis cache is highly available, survives a datacenter failure, and can scale beyond the memory limits of a single VM node.
Which Azure Cache for Redis tier should you recommend?
You are designing the caching strategy for a global web application.
The application relies on Azure Cache for Redis to store session state and reference data. You need to ensure that the Redis cache is highly available, survives a datacenter failure, and can scale beyond the memory limits of a single VM node.
Which Azure Cache for Redis tier should you recommend?
Answer options:
A.
Basic
B.
Standard
C.
Premium
D.
Enterprise
How to approach this question
Look for 'survives datacenter failure' (Availability Zones) and 'scale beyond memory limits' (Clustering). Both require the Premium tier.
Full Answer
C.Premium✓ Correct
Premium
The Premium tier of Azure Cache for Redis is designed for enterprise scale. It introduces Redis Clustering, which allows you to shard data across multiple Redis nodes, effectively scaling beyond the memory limits of a single VM. It also supports deployment across Availability Zones, ensuring the cache survives a datacenter failure.
Common mistakes
Choosing Standard. Standard provides basic HA (primary/replica), but cannot shard data (cluster) and does not support Availability Zones.
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