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	32664326	3.7046	3.6006	0.0000	0.3429
16	3200	71244353	4.0367	3.9682	0.0000	0.3144
24	4800	127251032	4.4925	4.3810	0.0000	0.2633
32	6400	145697744	4.6023	4.7081	0.0000	0.3075
40	8000	182341553	4.9161	5.2016	0.0000	0.3071
48	9600	224963224	5.4933	5.2932	0.0000	0.2987
56	11200	272306261	5.7611	5.5997	0.0000	0.2879
64	12800	310768818	6.1952	5.8321	0.0000	0.2883
72	14400	334469783	6.4056	6.2034	0.0000	0.3014
80	16000	395361710	6.6966	6.5540	0.0000	0.2833

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	31654714	6.9951	4.3168	22.0000	18.5758
16	3200	68580338	7.6229	4.8888	20.1875	17.3915
24	4800	117848315	9.2366	5.5289	22.2292	23.1884

When running with 32 clients, the proxy was blocked and never finish the client request after running for some time.