STUDY OF THE LOAD MANAGEMENT MECHANISMS IN CONTENT DELIVERY NETWORKS
Journal Title: Вісник Національного університету "Львівська політехніка", серія "Радіоелектроніка та телекомунікації" - Year 2016, Vol 849, Issue 2016
Abstract
Concept content delivery network (CDN) system and load balancing mechanisms were considered in this paper. The main task of the CND network - providing the qualitative information delivery to the end user. Content Delivery Network (CDN) – is a geographically distributed network, that contains a number of content servers and routers. As a rule, it consists of a main node (Origin), and caching nodes (Edges) – points of presence, which can be located in various parts of the world. All content are stored and updated on the Origin server. The main advantages of the CDN are the next: - increasing the content delivery speed; - reducing the load on the Origin server; - reducing the load on the primary server. We propose architecture, for select the optimum route and server for a user request, based on the objective functions. The main criterions of the objective function were taken delay time, server load and probability of packet lost. All user requests are sent to the nearest or lowest-load server to quicken the response. As part of this paper experimental research video content in CDN network was conducted. The main attention was focused on the primary server to broadcast video content and one of Edge servers. The intensity of the packets flow to Origin server and Edge server were presented. With the increasing load on the Edge server, server resources increase is needed. The load balancing technology can ensure that the user request points to the nearest230 edge server with minimum load in the network, so that network content is efficiently distributed. Load balancing system performs the following tasks: monitoring of servers and network equipment; choosing the server that will respond to the client’s request; traffic control between client and server. Dependencies delay time of the intensity receipt of user requests on a Edge server was presented. As we can see from the presented dependencies, delay time and jitter increases with the intensity of the input stream. Load balancing mechanism will allow more efficiently redirect user requests to the Edge servers. This makes it possible to provide services of better quality, ie less latency and jitter, which is critical for real-time services.
Authors and Affiliations
Maryan Kyryk
Keywords
Related Articles
- EP ID EP457752
- DOI -
- Views 134
- Downloads 0
JOINT DISCOVERY AND ESTIMATION OF INTENSITY OF UNSTATIONARY STREAM OF CALLS
The problem of joint detection and rating intensity of а stream applications in telecommunication system is examined. A mathematical model, which includes a flow model, procedure of estimation of parameters and threshold...
IMPROVING THE RESOLUTION OF MULTISPECTRAL IMAGES BY SUBPIXEL PROCESSING METHOD
The methods, their advantages and disadvantages, of fusion a low-resolution multispectral and panchromatic high-resolution image in high-resolution color image are considered. Is proposed a method to provide high-resolut...
MODELING AND INCREASING THE EFFICIENCY OF SCANNING ANTENNAS ON THE LINEAR ARRAYS BASIS
The modeling of linear antenna arrays, which ensure scanning of the direction of the main petal in one of the planes, has been conducted. It has been shown that when changing the direction of their radiation, the value o...
MODELS AND ALGORITHMS OF DATA FLOWS SWITCHING EFFICIENCY IMPROVING IN ALL-OPTICAL TELECOMMUNICATIONS SYSTEMS
Modern optical networks still in development to AON (All-Optical Networks). The main goal of all related works is providing the state-of-the-art optical switching techniques, designing of new solutions and applications....
EFFECTED ANGULAR SPREAD ON BEAMFORMING AND TRANSMIT DIVERSITY FOR INDOOR AND OUTDOOR
The implementation of beamforming and spatial diversity in Orthogonal Frequency Division Multiplexing (OFDM) systems reveals challenges in terms of complexity, feedback, and scenario dependencies. In this paper we discus...