我有许多点对点HTTP 代理，我需要在它们之间平均分配我的请求，所以我添加了多个cache_peer指令并将循环设置为对等选择算法。这是我的配置：
# Basic configuration
visible_hostname squid_proxy_1
unique_hostname squid_proxy_1
http_port 3130
pid_filename /vagrant/squid_proxy_1.pid
cache deny all
http_access allow all
# Proxies
cache_peer MY_PROXY_HOST parent PROXY_PORT 0 round-robin no-query name=FIRST login=MY_PROXY_LOGIN-1:PASSWORD1
cache_peer MY_PROXY_HOST parent PROXY_PORT 0 round-robin no-query name=SECOND login=MY_PROXY_LOGIN-2:PASSWORD2
cache_peer MY_PROXY_HOST parent PROXY_PORT 0 round-robin no-query name=THIRD login=MY_PROXY_LOGIN-3:PASSWORD3
never_direct allow all
但是我遇到了以下问题：cache_peer开关不是在每次请求之后进行的。这是我的access.log的样子：
sudo tail -f /var/log/squid3/access.log
1460977613.775 23783 127.0.0.1 TCP_MISS/200 11371 GET http://www.google.com/ - ROUNDROBIN_PARENT/104.131.79.140 text/html
1460977621.171 4843 127.0.0.1 TCP_MISS/200 11413 GET http://www.google.com/ - ROUNDROBIN_PARENT/104.131.79.140 text/html
1460977628.367 5583 127.0.0.1 TCP_MISS/200 11412 GET http://www.google.com/ - ROUNDROBIN_PARENT/104.131.79.140 text/html
1460977634.270 4726 127.0.0.1 TCP_MISS/200 11354 GET http://www.google.com/ - ROUNDROBIN_PARENT/104.131.79.140 text/html
1460977642.429 6531 127.0.0.1 TCP_MISS/200 12841 GET http://www.google.com/ - ROUNDROBIN_PARENT/104.131.79.140 text/html
1460977645.563 1747 127.0.0.1 TCP_MISS/200 11360 GET http://www.google.com/ - ROUNDROBIN_PARENT/104.131.79.140 text/html
1460977653.731 7242 127.0.0.1 TCP_MISS/200 11408 GET http://www.google.com/ - ROUNDROBIN_PARENT/107.170.96.123 text/html
1460977658.559 3763 127.0.0.1 TCP_MISS/200 11374 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
1460977660.516 1387 127.0.0.1 TCP_MISS/200 11398 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
1460977662.863 1758 127.0.0.1 TCP_MISS/200 11414 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
1460977664.667 1305 127.0.0.1 TCP_MISS/200 11419 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
1460977676.157 10901 127.0.0.1 TCP_MISS/200 11384 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
1460977678.565 1348 127.0.0.1 TCP_MISS/200 11321 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
1460977681.742 2516 127.0.0.1 TCP_MISS/200 11383 GET http://www.google.com/ - ROUNDROBIN_PARENT/45.55.163.40 text/html
仅当我使用这些特定的 P2P 代理时才会发生这种情况。我尝试使用在实习生中找到的免费代理进行相同的配置，一切正常。
我想问题是 Squid 可能认为我的代理已死（因为它们有时真的很慢），因此我们没有将流量路由到它们，但我不确定。
有没有办法获得有关对等选择算法的更多信息？我可以以某种方式调整cache_peer选项来解决这个问题吗？