Abstract: A computer implemented method and network device for tracking OPT-OUT user preferences in a global communication network and computer programs thereof, The method comprising performing, by at least one a user, at least one operation request for a service of an online system (500); tracking, by a network device (300), said operation request and detecting if it is linked to a tracking mechanism, wherein: a) if it is not linked to a tracking mechanism, said network device (300), bypasses the operation request to said online system (500) without performing any action; or if it is linked to a tracking mechanism, the network device (300), identifies whether an OPT-OUT or an Opt-In status related to the user is included in the operation request and sends or not the operation request to a tracking server (600) depending on the result of said identification.

Abstract: A distributed health-check method for web caching in a telecommunication network, wherein a plurality of web caching nodes are coordinated to monitor a set of origin servers where web content is generated. The method includes associating to each user of the telecommunication network requesting the web content buckets as logical containers for holding the web content requested; generating a list of users of the telecommunication network requesting the web content; and performing the plurality of web caching nodes a number of health-checks to the set of origin servers to download the requested web content. A filtering of the set of origin servers is performed for grouping in different areas of interest and the number of health-checks are performed by a limited number of caching nodes receiving the web content requests. The limited number of caching nodes selected belonging to a specific area of interest of the set of origin servers monitoring them.

Abstract: A computer implemented method and network device for tracking OPT-OUT user preferences in a global communication network and computer programs thereof, The method comprising performing, by at least one a user, at least one operation request for a service of an online system (500); tracking, by a network device (300), said operation request and detecting if it is linked to a tracking mechanism, wherein: a) if it is not linked to a tracking mechanism, said network device (300), bypasses the operation request to said online system (500) without performing any action; or if it is linked to a tracking mechanism, the network device (300), identifies whether an OPT-OUT or an Opt-In status related to the user is included in the operation request and sends or not the operation request to a tracking server (600) depending on the result of said identification.

Abstract: A method and system of storing and retrieving web content in a cache hard disk memory, in which read requests and write requests are separated in two different queues, and read requests are prioritized. This way, write requests are selectively delayed to favour read operations and improve user experience.

Abstract: The method comprises using a tracker for coordinating entities forming the infrastructure of the CDN, said tracker comprising a CDN layer comprising interfaces for the CDN entities and a network layer for providing network and communication services to the CDN layer. The tracker is designed to implement the method of the first aspect.

Abstract: The method comprises the management and delivery of a requested live stream using a P2P-based architecture, where peers exchanging content with one another are end points of a CDN. The delivery of the requested live stream to one or more end users is performed from one or more of said end points. The requested live stream is split into segments that the serving end points, preferably, obtains from neighbouring end points and/or from the origin server of the live stream using a scheduling algorithm and depending on the availability of segments thereof. The end point is designed for implementing the method of the invention.

Abstract: It comprises using buckets as logical containers for content files, and associating meta-data to said buckets, wherein said associating of meta-data comprises the association of two kinds of meta-data: file system meta-data and content distribution meta-data. The latter includes attributes or properties for specific use in a CDN system, and the method comprises using said content distribution meta-data for managing the content delivery in a CDN service.