Our spring / hibernate search application has a requirement that new entities must show up within seconds instead of say 30 minutes. How can we modify the master / slave configuration to meet this need using multiple nodes in a glassfish cluster?

Hello, what about configuration parameter , where XXX is number of seconds between updates?

Our worry is that if we set that refresh rate to something like 5 or even 10 seconds that it wouldn't perform well as the index grew in size. Am I wrong in this assumption?

We didn't test so short interval, 900s is sufficient for our project. Answer is simple, do a performance test a experiment with the value. According to Hibernate Search in Action book, these index updates are performed only on changed items so not whole index is copied.
If you do the performance test I'm curious to the results so publish them if you can please.

Sincerely,

Jirka Hradil