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Amazon ElastiCache vs EVCache

Amazon ElastiCache: AWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless. EVCache: Netflix's memcached-based distributed cache with zone-aware replication, built for AWS microservices.

key differences

  • Licensing: Amazon ElastiCache is proprietary (AWS service terms); EVCache is open source (permissive) (Apache License 2.0).
  • EVCache is built for larger datasets (Multi-PB) than Amazon ElastiCache (≤ 1 PB).
  • Transactions: Amazon ElastiCache offers limited ACID; EVCache offers none.
  • Only Amazon ElastiCache has transactions, secondary indexes, full-text search, vector search, geospatial.
  • Amazon ElastiCache has a serverless option; EVCache 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 evcache for

  • +Multi-zone caching in front of databases for Java microservices on AWS
  • +Session and personalisation data with short TTLs
  • +Read-heavy caches with sub-millisecond in-zone latency targets

best at · Cache, Sessions

Amazon ElastiCacheAWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless.
EVCacheNetflix's memcached-based distributed cache with zone-aware replication, built for AWS microservices.
overview
Primary model
Key-Value
Key-Value
Also supports
Vector, Search Engine
–
Type
Managed service
Database engine
Status
Active
Active
Developer
Amazon Web Services
Netflix
First release
2011
2013
Latest version
Valkey 9.1 engine (Jun 23, 2026)
5.28.1 (Sep 30, 2026)
License
ProprietaryAWS service terms
Open source (permissive)Apache License 2.0
Free tier
✓
✓
popularity
WhichDB Score
29.1
2.8
Rank
#89
#457
GitHub stars
–
2.2K
Stack Overflow questions
916
–
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Massive (Multi-PB)
Horizontal scaling
Native
Native
Multi-region
Read replicas
Active active
ACID
Limited
None
Consistency
Eventual
Eventual
Schema
Schemaless
Schemaless
Architecture
In memory, Primary replica, Distributed, Serverless
Distributed, In memory, Client server
deployment
Self-hosted
—
✓
Vendor-managed cloud
✓
—
Serverless
✓
—
Embedded
—
—
Edge
—
—
Clouds
AWS
AWS
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
Memcached commands via Java client
Client languages
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
Java
Best for
Cache, Sessions, Pub/Sub, Queue
Cache, Sessions
Add more to this comparisonNot sure either fits? Try smart match

Amazon ElastiCache vs EVCache: FAQ

What is the difference between Amazon ElastiCache and EVCache?

Amazon ElastiCache: AWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless. EVCache: Netflix's memcached-based distributed cache with zone-aware replication, built for AWS microservices. Licensing: Amazon ElastiCache is proprietary (AWS service terms); EVCache is open source (permissive) (Apache License 2.0). EVCache is built for larger datasets (Multi-PB) than Amazon ElastiCache (≤ 1 PB). Transactions: Amazon ElastiCache offers limited ACID; EVCache offers none.

When should I choose Amazon ElastiCache over EVCache?

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 EVCache for multi-zone caching in front of databases for Java microservices on AWS; session and personalisation data with short TTLs; and read-heavy caches with sub-millisecond in-zone latency targets.

Is Amazon ElastiCache or EVCache more popular?

Amazon ElastiCache ranks #89 on the WhichDB Score (29.1/100) and EVCache ranks #457 (2.8/100). Popularity is not fit: check the requirements that matter for your project.

Are Amazon ElastiCache and EVCache open source?

No. Amazon ElastiCache is proprietary, closed-source software. License: AWS service terms. Yes. EVCache is open source. License: Apache License 2.0.