Change search
ReferencesLink to record
Permanent link

Direct link
Analysis of the Performance of CacheReplacement Policies for aVideo-on-Demand System
KTH, School of Electrical Engineering (EES), Communication Networks.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

With  the  wide  spread  of  broadband  Internet  access,  multimedia  services  are  becoming  immensely  convenient  to  access  and  are  making  a  significant  contribution  to  the  amount  of  today's  Internet  traffic.  Comparing  with  conventional  web  content  access,  media--streaming  services  require  significantly  more  bandwidth  because  of  the  huge  size  of  media  contents.  As  a  consequence,  the  limited  server  capacity  and  network  bandwidths  have  been  proved  to  be  the  main  bottleneck  in  the  development  of  video  streaming  over  the  Internet.  A  commonly  used  method  to  alleviate  traffic  congestion  in  backbone  network  is  setting  local  cache  servers  between  clients  and  backbone  network,  at  the  edge  of  local  networks.  To  investigate  the  effectiveness  of  local  caching  on  media  streaming  services,  in  this  thesis  five  widely  used  cache  replacement  policies  are  simulated  based  on  the  request  data  of  a  Video--on--Demand  (VoD)  system and  their  caching  hit  rate  performance  is  compared.  The  cache  hit  rate  results  indicate  that  local  caching  strategy  with  appropriate  cache  replacement  policy  can  achieve  fairly  high  cache  hit  rate,  and  therefore,  can  reduce  the  network  bandwidth  and  the  original  server  load  significantly.  Besides,  different  request  pattern  and  video  popularity  among  different  video  categories  have  great  impact  on  the  caching  results.

Place, publisher, year, edition, pages
EES Examensarbete / Master Thesis
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-141476OAI: diva2:697090
Educational program
Master of Science - Wireless Systems
Available from: 2014-02-17 Created: 2014-02-17 Last updated: 2014-02-17Bibliographically approved

Open Access in DiVA

fulltext(1036 kB)202 downloads
File information
File name FULLTEXT01.pdfFile size 1036 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Communication Networks
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 202 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 81 hits
ReferencesLink to record
Permanent link

Direct link