apache2下的限速模块

mod_cband : is an Apache 2 module provided to solve the problem of limiting users' and virtualhosts' bandwidth usage. The current versions can set virtualhosts' and users' bandwidth quotas, maximal download speed (like in mod_bandwidth), requests-per-second speed and the maximal number of simultanous IP connections (like in mod_limitipconn)

Bandwidth Module : Restrict the number of simultaneous connections per vhost

mod_limitipconn : This is the distribution page for the Apache module mod_limitipconn.c, which allows web server administrators to limit the number of simultaneous downloads permitted from a single IP address.