"jshowalter" wrote : | - "if all of the data in a node ages out of the cache due to LRU, is the data removed from the cache and the node left in place, or is the node also removed"? | Like I said, the unit of atomicity is a node. So, it is an entire node that times out due to LRU, not any specific key/value pair within a node. As such, eviction removes the entire node *unless* the node has children, and is needed as a structural mechanism to access those children. In the latter case, the node is emptied and flagged as being evicted, but the node itself is still left as a structural piece. "jshowalter" wrote : | - "but you do introduce the possibility of phantom reads (but this is allowed in R_R semantics anyway)." We're using READ_COMMITTED. That should prevent phantom reads, shouldn't it? Nope. :-) http://api.openoffice.org/docs/common/ref/com/sun/star/sdbc/TransactionIs... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4221201#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...