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Momento vs Valkey

Momento: Managed Valkey and serverless cache/pub-sub from ex-DynamoDB engineers, plus self-hosted Valkey tooling. Valkey: The Linux Foundation's BSD-licensed fork of Redis, now the default engine on AWS and Google Cloud.

key differences

  • Licensing: Momento is proprietary (Proprietary service (SDKs Apache-2.0)); Valkey is open source (permissive) (BSD 3-Clause).
  • Momento is built for larger datasets (≤ 1 PB) than Valkey (≤ 10 TB).
  • Transactions: Momento offers none ACID; Valkey offers limited.
  • Only Valkey has transactions, geospatial, stored procedures, durable persistence, streaming ingest.
  • Momento has a serverless option; Valkey does not.

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

choose valkey for

  • +Replacing Redis OSS without license concerns
  • +Application caching and session storage
  • +Rate limiting, counters and leaderboards
  • +Pub/sub fan-out and Streams-based queues

best at · Cache, Sessions, Queue

MomentoManaged Valkey and serverless cache/pub-sub from ex-DynamoDB engineers, plus self-hosted Valkey tooling.
ValkeyThe Linux Foundation's BSD-licensed fork of Redis, now the default engine on AWS and Google Cloud.
overview
Primary model
Key-Value
Key-Value
Also supports
–
–
Type
Managed service
Database engine
Status
Active
Active
Developer
Momento Inc.
Valkey project (Linux Foundation)
First release
2022
2024
Latest version
–
9.1.3 (Oct 26, 2026)
License
ProprietaryProprietary service (SDKs Apache-2.0)
Open source (permissive)BSD 3-Clause
Free tier
✓
✓
popularity
WhichDB Score
9.0
58.0
Rank
#319
#16
GitHub stars
60
27.5K
Stack Overflow questions
–
29
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Native
Multi-region
None
Read replicas
ACID
None
Limited
Consistency
Eventual
Eventual
Schema
Schemaless
Schemaless
Architecture
Serverless, Distributed, In memory
In memory, Single node, Primary replica, Distributed, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
✓
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud
AWS, Google Cloud, Oracle Cloud, Aiven, DigitalOcean, Akamai
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
Momento SDK API, Redis commands (RESP)
Redis commands (RESP), Lua
Client languages
JavaScript, Python, Go, Java, C#, Rust, PHP, Ruby
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
Best for
Cache, Pub/Sub, Sessions
Cache, Sessions, Queue, Pub/Sub
Add more to this comparisonNot sure either fits? Try smart match

Momento vs Valkey: FAQ

What is the difference between Momento and Valkey?

Momento: Managed Valkey and serverless cache/pub-sub from ex-DynamoDB engineers, plus self-hosted Valkey tooling. Valkey: The Linux Foundation's BSD-licensed fork of Redis, now the default engine on AWS and Google Cloud. Licensing: Momento is proprietary (Proprietary service (SDKs Apache-2.0)); Valkey is open source (permissive) (BSD 3-Clause). Momento is built for larger datasets (≤ 1 PB) than Valkey (≤ 10 TB). Transactions: Momento offers none ACID; Valkey offers limited.

When should I choose Momento over Valkey?

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. Choose Valkey for replacing Redis OSS without license concerns; application caching and session storage; and rate limiting, counters and leaderboards.

Is Momento or Valkey more popular?

Valkey ranks #16 on the WhichDB Score (58.0/100) and Momento ranks #319 (9.0/100). Popularity is not fit: check the requirements that matter for your project.

Are Momento and Valkey open source?

No. Momento is proprietary, closed-source software. Yes. Valkey is open source. License: BSD 3-Clause.