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Amazon ElastiCache vs Azure Managed Redis

Amazon ElastiCache: AWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless. Azure Managed Redis: Microsoft's managed Redis built on Redis Enterprise, replacing the retiring Azure Cache for Redis.

key differences

  • Amazon ElastiCache is built for larger datasets (≤ 1 PB) than Azure Managed Redis (≤ 10 TB).
  • Amazon ElastiCache has a serverless option; Azure Managed Redis does not.

choose amazon-elasticache for

  • +Database query caching for RDS and DynamoDB
  • +Session storage for web apps on AWS
  • +Leaderboards and real-time counters
  • +Semantic caching for generative AI apps

best at · Cache, Sessions, Pub/Sub

choose azure-cache-for-redis for

  • +Caching and session storage for Azure App Service and AKS apps
  • +Vector search and semantic caching for Azure OpenAI apps
  • +Globally shared leaderboards with active geo-replication

best at · Cache, Sessions, Pub/Sub

Amazon ElastiCacheAWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless.
Azure Managed RedisMicrosoft's managed Redis built on Redis Enterprise, replacing the retiring Azure Cache for Redis.
overview
Primary model
Key-Value
Key-Value
Also supports
Vector, Search Engine
Document, Vector, Time-Series, Search Engine
Type
Managed service
Managed service
Status
Active
Active
Developer
Amazon Web Services
Microsoft (with Redis Ltd.)
First release
2011
2025
Latest version
Valkey 9.1 engine (Jun 23, 2026)
Redis 7.4 (May 2026)
License
ProprietaryAWS service terms
ProprietaryAzure service terms
Free tier
✓
—
popularity
WhichDB Score
29.1
0.4
Rank
#89
#644
GitHub stars
–
–
Stack Overflow questions
916
380
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Native
Multi-region
Read replicas
Active active
ACID
Limited
Limited
Consistency
Eventual
Eventual
Schema
Schemaless
Schemaless
Architecture
In memory, Primary replica, Distributed, Serverless
In memory, Distributed, Primary replica
deployment
Self-hosted
—
—
Vendor-managed cloud
✓
✓
Serverless
✓
—
Embedded
—
—
Edge
—
—
Clouds
AWS
Azure
capabilities
Transactions
✓
✓
Joins
—
—
Secondary indexes
✓
✓
Full-text search
✓
✓
Vector search
✓
✓
Geospatial
✓
✓
JSON
✓
✓
Change data capture
—
—
Triggers
—
—
Stored procedures
✓
✓
Materialized views
—
—
TTL / expiry
✓
✓
Pub/Sub
✓
✓
Columnar storage
—
—
In-memory
✓
✓
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
✓
✓
Role-based access
✓
✓
Time travel
—
—
Branching
—
—
Online schema changes
—
—
Streaming ingest
✓
✓
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
Redis commands (RESP), Memcached protocol, Lua
Redis commands (RESP), Lua, Redis Query Engine (FT.*)
Client languages
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
Best for
Cache, Sessions, Pub/Sub, Queue
Cache, Sessions, Pub/Sub, Queue
Add more to this comparisonNot sure either fits? Try smart match

Amazon ElastiCache vs Azure Managed Redis: FAQ

What is the difference between Amazon ElastiCache and Azure Managed Redis?

Amazon ElastiCache: AWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless. Azure Managed Redis: Microsoft's managed Redis built on Redis Enterprise, replacing the retiring Azure Cache for Redis. Amazon ElastiCache is built for larger datasets (≤ 1 PB) than Azure Managed Redis (≤ 10 TB). Amazon ElastiCache has a serverless option; Azure Managed Redis does not.

When should I choose Amazon ElastiCache over Azure Managed Redis?

Choose Amazon ElastiCache for database query caching for RDS and DynamoDB; session storage for web apps on AWS; and leaderboards and real-time counters. Choose Azure Managed Redis for caching and session storage for Azure App Service and AKS apps; vector search and semantic caching for Azure OpenAI apps; and globally shared leaderboards with active geo-replication.

Is Amazon ElastiCache or Azure Managed Redis more popular?

Amazon ElastiCache ranks #89 on the WhichDB Score (29.1/100) and Azure Managed Redis ranks #644 (0.4/100). Popularity is not fit: check the requirements that matter for your project.

Are Amazon ElastiCache and Azure Managed Redis open source?

No. Amazon ElastiCache is proprietary, closed-source software. License: AWS service terms. No. Azure Managed Redis is proprietary, closed-source software. License: Azure service terms.