scholarly journals Minimizing the In-Cloud Bandwidth for On-Demand Reactive and Proactive Streaming Applications

2021 ◽  
Vol 11 (23) ◽  
pp. 11267
Author(s):  
Achraf Gazdar ◽  
Lotfi Hidri ◽  
Belgacem Ben Ben Youssef ◽  
Meriam Kefi

Video streaming services are one of the most resource-consuming applications on the Internet. Thus, minimizing the consumed resources at runtime in general and the server/network bandwidth in particular are still challenging for researchers. Currently, most streaming techniques used on the Internet open one stream per client request, which makes the consumed bandwidth increases linearly. Hence, many broadcasting/streaming protocols have been proposed in the literature to minimize the streaming bandwidth. These protocols can be divided into two main categories, namely, reactive and proactive broadcasting protocols. While the first category is recommended for streaming unpopular videos, the second category is recommended for streaming popular videos. In this context, in this paper we propose an enhanced version of the reactive protocol Slotted Stream Tapping (SST) called Share All SST (SASST), which we prove to further reduce the streaming bandwidth with regard to SST. We also propose a new proactive protocol named the New Optimal Proactive Protocol (NOPP) based on an optimal scheduling of video segments on streaming-channel. SASST and NOPP are to be used in cloud and CDN (content delivery network) networks where the IP multicast or multicast HTTP on QUIC could be enabled, as their key principle is to allow the sharing of ongoing streams among clients requesting the same video content. Thus, clients and servers are often services running on virtual machines or in containers belonging to the same cloud or CDN infrastructure.

2020 ◽  
Vol 245 ◽  
pp. 04041
Author(s):  
Edgar Fajardo ◽  
Derek Weitzel ◽  
Mats Rynge ◽  
Marian Zvada ◽  
John Hicks ◽  
...  

A general problem faced by opportunistic users computing on the grid is that delivering cycles is simpler than delivering data to those cycles. In this project XRootD caches are placed on the internet backbone to create a content delivery network. Scientific workflows in the domains of high energy physics, gravitational waves, and others profit from this delivery network to increases CPU efficiency while decreasing network bandwidth use.


This paper proposes an architecture of content delivery network (CDN) based on big data for power saving. There are two types of video content: hot content and cold content. When video content is accessed frequently, it is called hot content. Conversely, when video content is accessed infrequently, it is called cold content. In CDN, there is an origin server and a CDN cache server. A CDN cache server has a replicated content and provides its content to the end users nearby. Therefore, the user can receive the requested content from the closest proximity for fast content. The proposed architecture in this paper powers off the cold content server in CDN cache server when the number of cold content requests decreases. Hence, the proposed architecture for content delivery services based on power saving is expected to be useful for providing multimedia streaming services with low power consumption for content providers.


2017 ◽  
Vol 24 (3) ◽  
pp. 54-63 ◽  
Author(s):  
Lifeng Sun ◽  
Ming Ma ◽  
Wen Hu ◽  
Haitian Pang ◽  
Zhi Wang

Author(s):  
S. Dhanalakshmi ◽  
T. Prabakaran ◽  
Krishna Kishore

Content Delivery Network is a network of servers hosted by a service provider in multiple locations of the world so that the content could deliver from a server that is nearest to the consumer requesting for it. It has evolved to overcome the inherent limitations of the internet regarding user perceived Quality of Service (QoS) when accessing the Web Content. It has been proposed to maximize bandwidth, improve accessibility and maintain correctness through content replication. The content is distributed to cache servers and located close to the users, resulting in fast, reliable applications and web services for the users. In this paper we provide a components, technologies and comprehensive taxonomy with a broad coverage of CDNs regarding the organizational structure, content distribution mechanisms, request redirection techniques, and performance measurement methodologies.


Author(s):  
Driss Ait Omar ◽  
Hamid Garmani ◽  
Mohamed El Amrani ◽  
Mohamed Baslam ◽  
Mohamed Fakir

This paper examines the economic utilities in a two-way market where content delivery network (CDN) providers charge content providers (CPs) for distribution of contents to end-users. The authors offer new models that involve CPs, CDN providers and end users and formulate interactions between CPs and CDN providers as a non-cooperative game after bargaining on some common decision parameters. After formulating the game and theoretically studying the existence and uniqueness of the Nash equilibrium, numerical analysis shows that negotiation is an exceptional solution to fight against the marginalization of the decision that can behave in CPs or CDNs. In terms of profit, the authors have shown that when the bargaining game exists the two actors share the gain and that allows them survival in the market.


Author(s):  
Manoj Kumar Srivastav ◽  
Robin Singh Bhadoria ◽  
Tarasankar Pramanik

The internet plays important role in the modern society. With the passage of time, internet consumers are increasing. Therefore, the traffic loads during communication between client and its associated server are getting complex. Various networking systems are available to send the information or to receive messages via the internet. Some networking systems are so expensive that they cannot be used for the regular purpose. A user always tries to use that networking system that works on expansion of optimizing the cost. A content delivery network (CDN) also called as content distribution network has been developed to manage better performance between client and list of available servers. This chapter presents the mathematical model to find optimization among client and cache server during delivery of content based on fuzzy logic.


2020 ◽  
Vol 2020 (4) ◽  
pp. 116-1-116-7
Author(s):  
Raphael Antonius Frick ◽  
Sascha Zmudzinski ◽  
Martin Steinebach

In recent years, the number of forged videos circulating on the Internet has immensely increased. Software and services to create such forgeries have become more and more accessible to the public. In this regard, the risk of malicious use of forged videos has risen. This work proposes an approach based on the Ghost effect knwon from image forensics for detecting forgeries in videos that can replace faces in video sequences or change the mimic of a face. The experimental results show that the proposed approach is able to identify forgery in high-quality encoded video content.


Author(s):  
Sujie Shao ◽  
Weichao Gong ◽  
Huifeng Yang ◽  
Shaoyong Guo ◽  
Liandong Chen ◽  
...  

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