One node writes files to the broker's local file system (for production uses, you should also consider implementing the Message Broker File Extender product).
Previously, assured delivery relied on a transaction store kept on the broker's queue manager, in order to keep track of incoming requests in case a broker crashed.
此前，确定交付依赖一个保存在代理的队列管理器上的事务存储，以便跟踪入站请求，以防发生代理崩溃。
3
When you no longer need the ability to roll back the broker, you can delete the broker's system database, unless it is still required for user data.