Arias Fisteus, JesúsFernández García, NorbertoSánchez Fernández, LuisFuentes Lorenzo, Damaris2020-06-102020-06-102014-03-01Journal of Web Semantics, (2014), v. 25, pp.: 16-23.1570-8268https://hdl.handle.net/10016/30598In 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.7eng© 2013 Elsevier B.V. All rights reserved.Atribución-NoComercial-SinDerivadas 3.0 EspañaSemantic sensor webStream distribution middlewareSemantic streamresearch articleTelecomunicacioneshttps://doi.org/10.1016/j.websem.2013.11.002open access1623Journal of Web Semantics25AR/0000015207