Bob,

Big discussion with Bess on IM about this; basically, good idea to cache what we can at index time.

Issues with throttling of requests so not blocked (configurable)

May want an example that not only stores way to lookup in db or file based cache, but indicates source of the content.

*maybe* some documentation about which services are currently legal vs. illegal to cache

generic solrmarc project might want this; if so, needs to be done carefully b/c it needs to sync with unknown consumer of index. (unknown to solrmarc project)

careful, clear documentation on how to configure

for later: refreshing of cache