vs

Apache Ignite vs Oracle Coherence

Apache Ignite: A distributed, memory-first SQL database and compute grid; Ignite 3 rebuilt it around Raft and Calcite. Oracle Coherence: Oracle's long-running Java data grid, with a UPL-licensed Community Edition on GitHub.

key differences

  • Apache Ignite is built for larger datasets (≤ 1 PB) than Oracle Coherence (≤ 10 TB).
  • Transactions: Apache Ignite offers full ACID; Oracle Coherence offers limited.
  • Only Apache Ignite has joins, change data capture, compression, encryption at rest, online schema changes.
  • Only Oracle Coherence has full-text search, vector search, json, pub/sub.

choose apache-ignite for

  • +Accelerating legacy RDBMS with an in-memory SQL cache layer
  • +Real-time risk and pricing calculations
  • +Distributed caching with SQL queries over cached data
  • +HTAP workloads on a sharded JVM cluster

best at · Cache, OLTP, HTAP

choose oracle-coherence for

  • +Session and state replication for WebLogic and Java apps
  • +Low-latency reference data caches in trading systems
  • +Event-driven processing with map listeners

best at · Cache, Sessions, Real-time analytics

overview
Primary model
Key-Value
Key-Value
Also supports
Relational
Document, Vector
Type
Database engine
Database engine
Status
Active
Active
Developer
Apache Software Foundation
Oracle
First release
2015
2001
Latest version
3.1.0 (Oct 29, 2025)
CE 26.07 (Sep 15, 2026)
License
Open source (permissive)Apache License 2.0
Open source (permissive)Universal Permissive License 1.0 (Community Edition)
Free tier
✓
✓
popularity
WhichDB Score
28.3
15.7
Rank
#98
#206
GitHub stars
5.1K
474
Stack Overflow questions
3.1K
261
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Native
Multi-region
None
Active active
ACID
Full
Limited
Consistency
Strong
Strong
Schema
Strict
Schemaless
Architecture
In memory, Distributed, Embedded, Client server
In memory, Distributed, Embedded, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
✓
✓
Edge
—
—
Clouds
–
Oracle 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
SQL, Key-value API
CohQL, Filter API, Java Streams
Client languages
Java, C#, C++, Python, JavaScript
Java, C#, C++, JavaScript, Python, Go
Best for
Cache, OLTP, HTAP, Real-time analytics
Cache, Sessions, Real-time analytics, Pub/Sub

Apache Ignite vs Oracle Coherence: FAQ

What is the difference between Apache Ignite and Oracle Coherence?

Apache Ignite: A distributed, memory-first SQL database and compute grid; Ignite 3 rebuilt it around Raft and Calcite. Oracle Coherence: Oracle's long-running Java data grid, with a UPL-licensed Community Edition on GitHub. Apache Ignite is built for larger datasets (≤ 1 PB) than Oracle Coherence (≤ 10 TB). Transactions: Apache Ignite offers full ACID; Oracle Coherence offers limited. Only Apache Ignite has joins, change data capture, compression, encryption at rest, online schema changes.

When should I choose Apache Ignite over Oracle Coherence?

Choose Apache Ignite for accelerating legacy RDBMS with an in-memory SQL cache layer; real-time risk and pricing calculations; and distributed caching with SQL queries over cached data. Choose Oracle Coherence for session and state replication for WebLogic and Java apps; low-latency reference data caches in trading systems; and event-driven processing with map listeners.

Is Apache Ignite or Oracle Coherence more popular?

Apache Ignite ranks #98 on the WhichDB Score (28.3/100) and Oracle Coherence ranks #206 (15.7/100). Popularity is not fit: check the requirements that matter for your project.

Are Apache Ignite and Oracle Coherence open source?

Yes. Apache Ignite is open source. License: Apache License 2.0. Yes. Oracle Coherence is open source. License: Universal Permissive License 1.0 (Community Edition).