Currently, the upstream DNS servers are stored in their own special hash. However, in order to implement full recursion, the upstream/root DNS servers need to be stored in the same hash cached entries are stored in.
However, there are some things different about upstream/root NS referrals in the hash:
- They will not be part of the file we store the offline cache in
- The entries will not be part of the queue we use to delete unused entries (and put stuff in the cache diskfile)
- It will not be possible to delete the entries once they are in the hash
My next task for Deadwood is to modify the hash structure to accommodate these “immutable” elements; after that, have upstream_servers and root_servers stored in the hash.
