Research Article
Adjustable Two-Tier Cache for IPTV Based on Segmented Streaming
Table 1
Comparison among related streaming caches.
| | Approach | Wu’s approach | Hyperproxy | SProxy | PAPA | DECA | Segment-based two-layer caching |
| | Segment partition | Pyramid | Lazy | Fixed | Segment prefix | Dynamic segment prefix | Fixed | | Cache replacement | Cost function + LRU | Cost function | NA | Cost function | Cost function | LRU + LRU-K | | Number of cache layers | 2 | 1 | 1 | 1 | 2 | 2 | | Admission control | YES | YES | NA | NA | NA | YES | | Precache | NA | YES | YES | NA | NA | NA |
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