[nsd-users] Question about "store-ixfr"

[Anand Buddhdev]

Hi NSD developers,

I have been experimenting with the "store-ixfr" feature in NSD. I have a 
configuration with:

server:
   zonefiles-write: 0

pattern:
   store-ixfr: yes

With this configuration, NSD transfers zones from a primary, and keeps 
them in RAM. When the zones are updated, it receives and stores the IXFR 
in RAM too. I can query NSD with the IXFR qtype, and it replies with the 
appropriate difference records. Neither the zone, nor the IXFRs are ever 
written to disk.

This means that NSD is using RAM for the IXFRs. Could you confirm that 
NSD with the "store-ixfr" option set to "yes" will use more RAM?

Regards,
Anand