Adjustable Two-Tier Cache for IPTV Based on Segmented Streaming

Algorithm 1

The algorithm to determine the sizes of caches L1 and L2.

Ratio_viewing=𝐶_viewing/𝐶_L1+L2

If(Ratio_viewing≥L1_Cache_Ratio_max){

𝐶_{L1_new_size}=𝐶_L1+L2⋅L1_Cache_Ratio_max

𝐶_{L2_new_size}=𝐶_L1+L2−𝐶_{L1_current_size} }

Else{

𝐶_{L1_new_size}=Ratio_viewing⋅𝐶_L1+L2

𝐶_{L2_new_size}=𝐶_L1+L2−𝐶_{L1_new_size} }