Hi, I can find lots of options for tuning KahaDB here,http://activemq.apache.org/kahadb.html. But there is only one page to describe how to enable LevelDB store. I need know options like KahaDB such as ensuring every non transactional journal write is followed by a disk sync, writing indexes asynchronously or not etc. Can you give me a link to see how to tuning LevelDB store ? Thanks, SuoNayi