Hazelcast
A platform for processing and acting on live data streams with real-time SQL and caching capabilities
- Also known as
- hazelcast
What is Hazelcast?
Combines stream processing with a fast data store to enable instant action on streaming data, supporting SQL queries, multiple data sources via connectors, and integration with machine learning workflows.
Hazelcast pricing
We don't have Hazelcast's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Hazelcast does
The capabilities that matter for key-value stores, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Storage tier
- In-memory
- Persistence
- Fully durable
- Data structures
- KV-only
- Wire protocol
- Custom
- Clustering
- Replicated
- Consistency
- Strong
- Eviction / TTL policies
- -
- Multi-threaded
- -
- Pub/Sub / streams
- ✓
- Transactions / atomic ops
- -
- Deployment
- Self-hosted
- Licence class
- -
- Redis API compatibility
- -
Platform & deployment
Independently observed- CLI
- Cloud / SaaS
- Self-hosted
Integrations (7)
Independently observed- Spring Integration
- MongoDB
- Kafka•
- Hadoop•
- S3•
- RDBMS•
- JMS•
Security & compliance
Known vulnerabilities: 8 (0 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality
Hazelcast FAQ
Common questions about Hazelcast, answered from independent, dated evidence.
What is Hazelcast?
Hazelcast is a distributed data platform that provides real-time processing and continuous intelligence capabilities. It supports clustering and integrates with various frameworks and clients. It is indexed under Key-Value Stores.
Source: https://hazelcast.com
What platforms does Hazelcast support?
Hazelcast supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://hazelcast.com
Can Hazelcast be self-hosted?
Yes. Hazelcast can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://hazelcast.com
What security certifications does Hazelcast have?
We have independently confirmed GDPR for Hazelcast. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Hazelcast not holding them. Always confirm compliance directly before you rely on it.
Source: https://hazelcast.com/blog/health-information-privacy/
Is Hazelcast open source?
Yes. Hazelcast is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Hazelcast alternatives
Other key-value stores we track, ranked by the same independent score.
- RedisHigh-speed in-memory data store for applications requiring real-time data access with extremely low latencyhigh · 75%
- UpstashServerless data platform combining in-memory storage, vector search, messaging, and workflow orchestration in one managed servicemedium · 73%
- Amazon ElastiCacheA fully managed in-memory caching service with microsecond latency and automatic scalingmedium · 61%
- etcdA reliable distributed database for managing critical configuration and state across clustered systemslow · 44%
- RocksDBAn embeddable database library for high-performance key-value storage on flash and RAMlow · 49%
- DragonflyDBA high-performance Redis-compatible in-memory database built for modern multi-threaded hardware and cloud scalemedium · 62%
Compare Hazelcast
Side by side against other key-value stores, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Hazelcast, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 63 | 0.14 | 8.5 | ✓ |
| Release cadence | 92 | 0.08 | 7.4 | ✓ |
| Capabilities | 75 | 0.08 | 6.0 | ✓ |
| Dependent projects | 67 | 0.05 | 3.6 | ✓ |
| Stars | 72 | 0.05 | 3.4 | ✓ |
| Security score | 42 | 0.05 | 2.3 | ✓ |
| Package downloads | 46 | 0.04 | 1.9 | ✓ |
| Integrations | 22 | 0.05 | 1.2 | ✓ |
| Security posture | 5 | 0.12 | 0.0 | - |
| Developer Q&A activity | 0 | 0.14 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 97 | mediumsource · 2026-09-14 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 67% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Clustering: replicated · Deployment: self_hosted · Autoscaling: Yes · Consistency: strong · Open source: Yes · Persistence: durable | mediumsource · 2026-09-14 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 5 | mediumsource · 2026-09-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Java | highsource · 2026-09-14 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-09-14 · 85% |
Pricing
Release
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-03 · 60% |
Security
| Attribute | Value | Evidence |
|---|---|---|
| Gdpr | Yes | highsource · 2026-08-14 · 75% |
| Scorecard | 4.2 | highsource · 2026-09-14 · 90% |
| Vulnerabilities | Count: 8 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.hazelcast%3Ahazelcast&per_page=100 · Last 12m: 0 · Max severity: CRITICAL | highsource · 2026-09-14 · 90% |
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