This directive maps a client request to a particular delay pool. A client’s cache miss is delayed only if it is “allowed” by one of the delay_access rules. Squid checks the access rules for all pools in order. If a particular request is denied by all delay_access rules, it isn’t delayed. You must define at least one rule to use delay pools.
acl Dorms src 172.17.0.0/16 delay_access 1 allow Dorms
delay_pools, delay_class, delay_parameters, delay_initial_bucket_level