Dragonfly vs Hazelcast: Head-to-Head Comparison

Quick Verdict

Dragonfly is the better pick for high-throughput caching on large machines. Hazelcast is the better pick for Java applications needing distributed caching and compute.

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At a Glance

Feature	Dragonfly	Hazelcast
Best For	High-throughput caching on large machines	Java applications needing distributed caching and compute
Pricing	Free community edition; paid cloud	Free community edition; paid enterprise
Free to Start	Yes	Yes
License	Source-available	Open-core
Deployment	Self-hosted or managed cloud	Self-hosted or managed cloud
Link	Visit Dragonfly	Visit Hazelcast

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Detailed Breakdown

Dragonfly

Multithreaded Redis- and Memcached-compatible store

Pros:

• Multithreaded architecture
• Redis and Memcached API compatibility
• Efficient memory use

Cons:

• BSL license
• Not every Redis command is supported

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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: Dragonfly — multithreaded Redis- and Memcached-compatible store. Hazelcast — distributed in-memory computing platform.
• Licensing differs: Dragonfly is source-available while Hazelcast is open-core.
• Pricing: Dragonfly — free community edition; paid cloud. Hazelcast — free community edition; paid enterprise.
• Signature strength: Dragonfly — multithreaded architecture. Hazelcast — distributed data structures.

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Frequently Asked Questions

Is Dragonfly better than Hazelcast?

It depends on your requirements. Dragonfly is a strong fit for high-throughput caching on large machines, while Hazelcast suits Java applications needing distributed caching and compute.

Is Dragonfly free to use?

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

Is Hazelcast free to use?

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

Can I self-host Dragonfly or Hazelcast?

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

What are the main drawbacks of Dragonfly and Hazelcast?

Dragonfly: BSL license; not every Redis command is supported. Hazelcast: heavier than simple caches; enterprise features are paid.