Web Proxy Caching Model Web Servers Aggregate Proxy Workload - - PowerPoint PPT Presentation

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Aug 04, 2023 260 likes •303 views

Web Proxy Caching Model Web Servers Aggregate Proxy Workload server Web Clients Factors and Levels Cache size Cache Replacement Policy Recency-based LRU Frequency-based LFU-Aging Size-based GD-Size Workload

SLIDE 1

Web Clients Web Servers Proxy server Aggregate Workload

Web Proxy Caching Model

SLIDE 2

Factors and Levels

Cache size
Cache Replacement Policy

– Recency-based LRU – Frequency-based LFU-Aging – Size-based GD-Size

Workload Characteristics

– One-timers, Zipf slope, tail index, correlation, temporal locality model

SLIDE 3

Performance Metrics

Document Hit Ratio (DHR)

– What percentage of the documents requested by the clients are satisfied directly by the proxy, without having to obtain from the Web server?

Byte Hit Ratio (BHR)