The default is cache_size for geoip is documented at 1000. Is that 1000 IPs, bytes/kb?
Also with pereodic_flush:false (default), when does this flush?
Tracing down a mismatch IP where going back a month up until this morning it states the IP is Ukraine, other databases state its the UK, i signed upto geolite2 and downloaded the country CSV, that stated updated 30 March and the IP is linked to the UK.
Might just be that i need to set periodic_flush:true