2. I’ve been using BDB as a storage implementation of Jackrabbit for 4 years. It was couple of days ago (in fact it happened exactly on Jul. 30th, the date of the last comment mentioning failures of BDB) that this database got corrupted.

3. There are a couple of things about all these solution that concern me and I’m referring here to the fact that most of them have chosen to implement custom protocols and connection APIs. While I may find some reasons for this (f.e. most of them have been initially developed to solve an internal problem and open sourced afterwards), it is quite strange to see that they lock you in. Basically, before starting to use any of these solution you’ll have to spend a lot more time to figure out if the solution you are picking will fit all your needs, as later migration will be extremely difficult.

I hope there will be a time when people involved will sit down and figure out some common protocols and APIs. And I hope this will happen sooner than later, as the more we postpone this step the more difficult will be to ask those already using to change their implementations.