License types
Some advanced Diffusion™ features are limited to certain license types.
Licenses can also limit the number of concurrent sessions or topics.
You can obtain a free Community Production or Evaluation license at community.diffusiondata.com.
The Community Evaluation license is time-limited and intended to help you explore all Diffusion features.
The Community Production license is suitable for production of small-scale applications hosted on a single server.
If you need to buy or upgrade a paid commercial license, contact [email protected] . The sales team can also provide a more capable Evaluation license if required.
| Feature | Restricted Default | Community Production | Community Evaluation | Commercial | Commercial with Scale & Availability Pack |
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| Core Diffusion features |
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| Production use allowed? |
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| Maximum sessions | 5 | 1000 | 25 | Varies | Varies |
| Maximum topics | 1000 | 1000 | Unlimited | Varies | Varies |
| Maximum CPU cores | 8 | 8 | 8 | Varies | Varies |
| Persistence |
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| Remote connections (remote topic views and fan-out) |
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| Session replication |
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| Topic replication |
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| Cluster management (including Prometheus) |
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Commercial license restrictions
A specific commercial license may have restrictions such as an expiry date, allowed IP range or a maximum number of concurrent sessions, depending on your agreement with DiffusionData. See License restrictions for details of possible restrictions.