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Mechanisms for Achieving Information Durability and Persistence

Introduction

Connext DDS offers the following mechanisms for achieving durability and persistence:

These features can be configured separately or in combination. To use Durable Writer State and Durable Reader State, you need a relational database, which is not included with Connext DDS. Supported databases are listed in the Release Notes. Persistence Service does not require a database when used in TRANSIENT mode (see RTI Persistence Service) or in PERSISTENT mode with file-system storage (see RTI Persistence Service and Configuring Remote Administration).

To understand how these features interact we will examine the behavior of the system using the following scenarios:

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