Perhaps for DOS resistance like the hashdos vulnerability from 2011? https://nakedsecurity.sophos.com/2011/12/28/large-percentage-of-websites-vulnerable-to-has

Perhaps for DOS resistance like the hashdos vulnerability from 2011? https://nakedsecurity.sophos.com/2011/12/28/large-percentage-of-websites-vulnerable-to-hashdos-denial-of-service-attack/ https://nakedsecurity.sophos.com/2011/12/28/large-percentage...