Triggering optimise based on time interval

[Renaud Delbru]

Hi,

We would like to trigger an optimise every x hours. From what I can see, 
there is nothing in Solr (3.1-SNAPSHOT) that enables to do such a thing.
We have a master-slave configuration. The masters are tuned for fast 
indexing (large merge factor). However, for the moment, the master index 
is replicated as it is to the slaves, and therefore it does not provide 
very fast query time.
Our idea was
- to configure the replication so that it only happens after an 
optimise, and
- schedule a partial optimise in order to reduce the number of segments 
every x hours for faster querying.
We do not want to rely on cron job for executing the partial optimise 
every x hours, but we would prefer to configure this directly within the 
solr config.

Our first idea was to create a SolrEventListener, that will be 
postCommit triggered, and that will be in charge of executing an 
optimise at regular time interval. Is this a good approach ? Or is there 
other solutions to achieve this ?

Thanks,
--
Renaud Delbru