KeyDB vs Hazelcast: Head-to-Head Comparison

Quick Verdict

KeyDB is the better pick for Redis users wanting multithreading. Hazelcast is the better pick for Java applications needing distributed caching and compute.

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At a Glance

Feature	KeyDB	Hazelcast
Best For	Redis users wanting multithreading	Java applications needing distributed caching and compute
Pricing	Free and open source	Free community edition; paid enterprise
Free to Start	Yes	Yes
License	Open source	Open-core
Deployment	Self-hosted	Self-hosted or managed cloud
Link	Visit KeyDB	Visit Hazelcast

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Detailed Breakdown

KeyDB

Multithreaded fork of Redis maintained by Snap

Pros:

• Multithreaded
• Active-active replication
• Redis compatible

Cons:

• Development has slowed
• Smaller community

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Hazelcast

Distributed in-memory computing platform

Pros:

• Distributed data structures
• Stream processing
• Strong Java integration

Cons:

• Heavier than simple caches
• Enterprise features are paid

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Key Differences

• Positioning: KeyDB — multithreaded fork of Redis maintained by Snap. Hazelcast — distributed in-memory computing platform.
• Licensing differs: KeyDB is open source while Hazelcast is open-core.
• Deployment: KeyDB — self-hosted. Hazelcast — self-hosted or managed cloud.
• Pricing: KeyDB — free and open source. Hazelcast — free community edition; paid enterprise.
• Signature strength: KeyDB — multithreaded. Hazelcast — distributed data structures.

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Frequently Asked Questions

Is KeyDB better than Hazelcast?

It depends on your requirements. KeyDB is a strong fit for Redis users wanting multithreading, while Hazelcast suits Java applications needing distributed caching and compute.

Is KeyDB free to use?

Yes, you can start with KeyDB for free. Pricing model: Free and open source.

Is Hazelcast free to use?

Yes, you can start with Hazelcast for free. Pricing model: Free community edition; paid enterprise.

Can I self-host KeyDB or Hazelcast?

KeyDB can be self-hosted. Deployment options: self-hosted. Hazelcast can be self-hosted. Deployment options: self-hosted or managed cloud.

What are the main drawbacks of KeyDB and Hazelcast?

KeyDB: development has slowed; smaller community. Hazelcast: heavier than simple caches; enterprise features are paid.