vs

Redis vs ScaleOut StateServer

Redis: The in-memory data structure server that became the default cache, now with search, JSON and vectors built in. ScaleOut StateServer: Commercial in-memory data grid for .NET and Java with parallel query, Redis support and in-cache code.

key differences

  • Licensing: Redis is open source (copyleft) (Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+)); ScaleOut StateServer is proprietary (Proprietary).
  • Only Redis has transactions, full-text search, vector search, geospatial, json.

choose redis for

  • +Application and database query caching
  • +Session storage and user tokens
  • +Rate limiting and distributed locks
  • +Leaderboards and counters

best at · Cache, Sessions, Queue

choose scaleout-stateserver for

  • +Distributed session state for ASP.NET and Java web farms
  • +Low-latency shared object cache for .NET services
  • +Real-time analytics and digital twins over fast-changing data
  • +Replacing self-managed Redis in Windows-centric shops

best at · Cache, Sessions, Real-time analytics

overview
Primary model
Key-Value
Key-Value
Also supports
Document, Vector, Time-Series, Search Engine
Document
Type
Database engine
Database engine
Status
Active
Active
Developer
Redis Ltd.
ScaleOut Software, Inc.
First release
2009
2005
Latest version
8.10.3 (Oct 26, 2026)
6 (Sep 2025)
License
Open source (copyleft)Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+)
ProprietaryProprietary
Free tier
✓
—
popularity
WhichDB Score
84.3
0.0
Rank
#2
#806
GitHub stars
77.1K
–
Stack Overflow questions
25.4K
–
scale & guarantees
Comfortable data size
Medium (≤ 10 TB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Native
Multi-region
Active active
Read replicas
ACID
Limited
Limited
Consistency
Eventual
Strong
Schema
Schemaless
Schemaless
Architecture
In memory, Single node, Primary replica, Distributed, Client server
Distributed, In memory
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud, Azure, DigitalOcean, Heroku, Render
–
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), Lua, Redis Query Engine (FT.*)
LINQ, Java/C++ filter APIs, Redis commands
Client languages
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
C#, Java, C, C++
Best for
Cache, Sessions, Queue, Pub/Sub
Cache, Sessions, Real-time analytics, Pub/Sub

Redis vs ScaleOut StateServer: FAQ

What is the difference between Redis and ScaleOut StateServer?

Redis: The in-memory data structure server that became the default cache, now with search, JSON and vectors built in. ScaleOut StateServer: Commercial in-memory data grid for .NET and Java with parallel query, Redis support and in-cache code. Licensing: Redis is open source (copyleft) (Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+)); ScaleOut StateServer is proprietary (Proprietary). Only Redis has transactions, full-text search, vector search, geospatial, json.

When should I choose Redis over ScaleOut StateServer?

Choose Redis for application and database query caching; session storage and user tokens; and rate limiting and distributed locks. Choose ScaleOut StateServer for distributed session state for ASP.NET and Java web farms; low-latency shared object cache for .NET services; and real-time analytics and digital twins over fast-changing data.

Is Redis or ScaleOut StateServer more popular?

Redis ranks #2 on the WhichDB Score (84.3/100) and ScaleOut StateServer ranks #806 (0.0/100). Popularity is not fit: check the requirements that matter for your project.

Are Redis and ScaleOut StateServer open source?

Yes. Redis is open source. License: Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+). No. ScaleOut StateServer is proprietary, closed-source software.