Without Cache

client number	total request number	total byte number	first phase average latency	second phase average latency	hit rate	byte hit rate
08	1600	31397743	5.8520	5.7687	0.0000	0.0000
16	3200	65673861	8.4480	8.2354	0.0000	0.0000
24	4800	118438802	12.2691	11.6940	0.0000	0.0000

With cache

client number	total request number	total byte number	first phase average latency	second phase average latency	hit rate	byte hit rate
08	1600	31284817	4.7009	3.0793	23.2500	20.0084
16	3200	65333289	8.4734	4.1321	24.0938	21.4207
24	4800	125148970	11.7451	5.9789	24.3958	23.1523

Comment

We run the benchmark only till 24 clients. When running with 32 clients, the proxy refuses the request from clients. The error log has the following record: "[http-server] cowxx.cs.wisc.edu/128.105.xx.xxx refused (overloaded)"