Transaction Logging

eXtremeDB Transaction Logging extends eXtremeDB with three important capabilities:

• for eXtremeDB in-memory database recovery in the event of failure
• for “Data Relay” to facilitate seamless, fine-grained data sharing between eXtremeDB applications and external systems
• for creating a persistent queue of events

The following topics explain the general principles of eXtremeDB Transaction Logging application design and implementation:

Introduction	Introduction to eXtremeDB Transaction Logging
Transaction Logging Applications	Enabling Transaction Logging in applications
Data Relay and Persistent Queue of Events	Strategy and Implementation details
TL with HA and Cluster	Using eXtremeDB Transaction Logging with HA and Cluster applications
Dynamic DDL	Support for the SQL DDL operations to create, alter or drop tables and indexes
Optimizations	Techniques and tips for optimizing eXtremeDB Transaction Logging application performance