What is Azure Cache for Redis?
Azure Cache for Redis is a fully managed in-memory cache based on Redis. The service provides extremely low latencies for reads and enables applications to scale performance by caching frequently queried data.
The service is available in multiple tiers: Basic for development, Standard with primary-replica replication, Premium with persistence and VNet integration, and Enterprise with Redis Enterprise features like RedisSearch and active-active geo-replication.
Core Features
- Sub-millisecond latency for read and write operations
- Automatic failover with primary-replica replication
- Redis persistence for data durability (Premium/Enterprise)
- VNet integration and Private Link for network isolation
- Redis Modules: RedisSearch, RedisJSON, RedisBloom (Enterprise)
Typical Use Cases
Session Store: Web applications store user sessions in Redis for horizontal scaling across multiple servers.
Database Query Caching: Expensive database queries are cached to reduce backend load and improve response times.
Real-Time Leaderboards: Gaming applications use Redis Sorted Sets for real-time rankings with millions of entries.
Benefits
- No Redis administration required
- Automatic updates and patches
- Scalable from megabytes to terabytes
- Enterprise features for mission-critical workloads
Frequently Asked Questions
What is the difference between Standard and Premium?
Standard offers replication and 99.9% SLA. Premium adds persistence, VNet integration, Redis Cluster, and geo-replication.
When should I choose Enterprise Tier?
Enterprise for 99.99% SLA, active-active geo-replication, larger caches (up to 1.5 TB), and Redis Modules like RedisSearch.
How does Redis Persistence work?
Premium and Enterprise support RDB snapshots or AOF logging for data durability across restarts.
Can I use existing Redis clients?
Yes, all standard Redis clients in all programming languages are compatible.
Integration with innFactory
As a Microsoft Solutions Partner, innFactory supports you with caching strategies using Azure Cache for Redis. We help with architecture, sizing, and performance optimization.
Contact us for a non-binding consultation on Azure Cache for Redis.
