iHPProxy: Improving the Performance of HPProxy by
Adding Extra Hot-Points
Ponnusamy Pichamuthu1
and Karthikeyan Eswaramurthy2
1Department of Computer Science,
Bharathiar University, India
2Department of Computer Science, Government Arts
College, Udumalpet, Bharathiar University, India
Abstract: In recent years, the interest of Internet
users turned into viewing videos such as Video-on-Demand (VoD), online movies, online
sports, news, e-learning, etc., the researchers involved proxy caching with
replacement to provide immediate content delivery to the client on request. One
important aspect in the content delivery is continuous playability with random
seek even the client wants to watch the video from a new location by jumping
into that location. The continuous play is possible if the hit location is
cached already, otherwise a delay will occur. The researchers allowed a small
deviation from the desired location in the backward direction to reduce the
delay. Our earlier model, Hot-Point Proxy caching (HPPrxoy), also supports the
shift to the nearest cached Group Of Pictures (GOP) in the backward direction
to play immediately, but, in some cases the deviation was large. Hence, we
proposed a new model to provide a little deviation by adding extra hot-points
between existing sub-level hot-points. However, this mechanism additionally
consumes cache memory, it increases the byte-hit ratio, satisfies the user
requirement in random seek and provide better cache replacement.
Keywords: Proxy caching, shift distance, HPProxy, cache replacement, multimedia streaming, VoD.
Received May 9, 2013; accepted July 8, 2013; Published online December 23, 2015