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Amazon ElastiCache vs Momento

Amazon ElastiCache: AWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless. Momento: Managed Valkey and serverless cache/pub-sub from ex-DynamoDB engineers, plus self-hosted Valkey tooling.

key differences

  • Transactions: Amazon ElastiCache offers limited ACID; Momento offers none.
  • Only Amazon ElastiCache has transactions, secondary indexes, full-text search, vector search, geospatial.

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 momento for

  • +Caching for spiky media and live-event traffic
  • +Real-time pub/sub to browsers and mobile apps
  • +Outsourcing large Valkey fleet operations

best at · Cache, Pub/Sub, Sessions

Amazon ElastiCacheAWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless.
MomentoManaged Valkey and serverless cache/pub-sub from ex-DynamoDB engineers, plus self-hosted Valkey tooling.
overview
Primary model
Key-Value
Key-Value
Also supports
Vector, Search Engine
–
Type
Managed service
Managed service
Status
Active
Active
Developer
Amazon Web Services
Momento Inc.
First release
2011
2022
Latest version
Valkey 9.1 engine (Jun 23, 2026)
–
License
ProprietaryAWS service terms
ProprietaryProprietary service (SDKs Apache-2.0)
Free tier
✓
✓
popularity
WhichDB Score
29.1
9.0
Rank
#89
#319
GitHub stars
–
60
Stack Overflow questions
916
–
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
Read replicas
None
ACID
Limited
None
Consistency
Eventual
Eventual
Schema
Schemaless
Schemaless
Architecture
In memory, Primary replica, Distributed, Serverless
Serverless, Distributed, In memory
deployment
Self-hosted
—
✓
Vendor-managed cloud
✓
✓
Serverless
✓
✓
Embedded
—
—
Edge
—
—
Clouds
AWS
AWS, Google Cloud
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
Momento SDK API, Redis commands (RESP)
Client languages
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
JavaScript, Python, Go, Java, C#, Rust, PHP, Ruby
Best for
Cache, Sessions, Pub/Sub, Queue
Cache, Pub/Sub, Sessions
Add more to this comparisonNot sure either fits? Try smart match

Amazon ElastiCache vs Momento: FAQ

What is the difference between Amazon ElastiCache and Momento?

Amazon ElastiCache: AWS's managed Valkey, Redis OSS and Memcached service, provisioned or serverless. Momento: Managed Valkey and serverless cache/pub-sub from ex-DynamoDB engineers, plus self-hosted Valkey tooling. Transactions: Amazon ElastiCache offers limited ACID; Momento offers none. Only Amazon ElastiCache has transactions, secondary indexes, full-text search, vector search, geospatial.

When should I choose Amazon ElastiCache over Momento?

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 Momento for caching for spiky media and live-event traffic; real-time pub/sub to browsers and mobile apps; and outsourcing large Valkey fleet operations.

Is Amazon ElastiCache or Momento more popular?

Amazon ElastiCache ranks #89 on the WhichDB Score (29.1/100) and Momento ranks #319 (9.0/100). Popularity is not fit: check the requirements that matter for your project.

Are Amazon ElastiCache and Momento open source?

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