你可以使用NginxHttpLimitZone模塊來限制指定的會話或者一個IP地址的特殊情況下的并發(fā)連接。編輯nginx.conf:

1. ### Directive describes the zone, in which the session states are stored i.e. store in slimits. ###

2. ### 1m can handle 32000 sessions with 32 bytes/session, set to 5m x 32000 session ###

3. limit_zone slimits $binary_remote_addr 5m;

4. ### Control maximum number of simultaneous connections for one session i.e. ###

5. ### restricts the amount of connections from a single ip address ###

6. limit_conn slimits 5;

上面表示限制每個遠程IP地址的客戶端同時打開連接不能超過5個。