Some of the salient features in NaradaBrokering include:
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Powerful support for efficient long-tail distributions: The substrate allows an entity to narrow its interest in content streams by incorporating support for rich constraint specifications such as regular-expressions and XPath queries. |
| [2] | Secure end-to-end delivery of streams: The security framework secures content streams, while enforcing dissemination constraints related to the generation and consumption of these streams. |
| [3] | Robust stream disseminations: The substrate supports reliable distribution of streams. Entities may retrieve missing portions of the streams while recovering from failures or after disconnects. This scheme also incorporates support for fine tuning the redundancy and fault-tolerance associated with the robust stream disseminations. |
| [4] | Stream jitter reductions: When streams traverse a network, different messages within the stream are delay differently: this is jitter. Jitter manifests itself as noise in audio and flicker in video. The substrate has support for reducing this jitter. |
| [5] | Performance: A particular emphasis in NaradaBrokering has been on high performance. The designs of algorithms within the substrate, and their concomitant implementations, have focused on performance optimizations. |
Summary of Current Features
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Transport protocols supported include TCP (blocking, non-blocking), UDP, Multicast, SSL, HTTP and HTTPS, Parallel TCP Streams |
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Subscription can be Strings, Integers, XPath queries, Regular Expressions, SQL (selectors for JMS messages) and tag=value pairs. |
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Secure end-to-end delivery of events |
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Robust and exactly-once delivery of events |
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Replay Service with (and without) time differential services. |
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Publisher Order, Total Order over a template/topic & Time-Ordered delivery |
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Globally synchronized timestamps based on the Network Time Protocol. |
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Compression and
decompression of payloads |
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Topic and Broker Discovery Services |
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Recording Services |
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Performance Monitoring |
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JMS Version 1.0.2 b compliant |
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Support for SOAP |
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Implementation of WS-ReliableMessaging and WS-Reliability |
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Implementation of WS-Eventing |