iNTERFACEWARE™ Inc.

Failover Strategy Review and Analysis

To ensure that your failover strategy is stable and ultimately successful, you must ensure that your database server is fully redundant. That, coupled with that the fact that Iguana utilizes database transactions for all its database operations, will provide stable, transactional processing. Since Iguana's logs and message filters use this type of database transaction method, messages will never be lost. For example, when one Iguana server fails it either has completed a transaction into the database, or it will be rolled back. As long as this is true, the secondary server running Iguana will be making use of the same logs and message filters, meaning there will be no loss of data, nor duplication of messages.