php - maximum frequency with Google app engine can by hit under free quota? -

what maximum frequency ( in per minute) , can hit google app engine [ using php ] under free quota app?

you can check limits in gae console.

per-minute quotas protect application consuming of resources in short periods of time, , prevent other applications monopolizing given resource. if application consumes resource , depletes 1 of per-minute quotas, word "limited" appears next appropriate quota on quota details screen in admin console. requests resources have hit per-minute maximum denied.