Ztreamy: a middleware for publishing semantic streams on the web Articles uri icon

publication date

  • March 2014

start page

  • 16

end page

  • 23

issue

  • Marzo

volume

  • 25

International Standard Serial Number (ISSN)

  • 1570-8268

abstract

  • In order to make the semantic sensor Web a reality, middleware for efficiently publishing semantically-annotated data streams on the Web is needed. Such middleware should be designed to allow third parties to reuse and mash-up data coming from streams. These third parties should even be able to publish their own value-added streams derived from other streams and static data. In this work we present Ztreamy, a scalable middleware platform for the distribution of semantic data streams through HTTP. The platform provides an API for both publishing and consuming streams, as well as built-in filtering services based on data semantics. A key contribution of our proposal with respect to other related systems in the state of the art is its scalability. Our experiments with Ztreamy show that a single server is able, in some configurations, to publish a real-time stream to up to 40 000 simultaneous clients with delivery delays of just a few seconds, largely outperforming other systems in the state of the art.

keywords

  • semantic sensor web; stream distribution middleware; semantic stream