Did you ever wonder if you can create a backup of your index with the tools available in Solr ? For exmaple after every commit or optimize operation ? Or may you would like to create backups with the HTTP API call ? Lets see what possibilities Solr has to offer.
After the release of Solr 3.1 I decided to look into the extended list of formats through which we can update the indexes. Until now we had a choice of three kinds of formats with which we were able to provide data – XML, CSV, and so. called JavaBin. The release of Solr 3.1 introduces the fourth format – JSON.