Open topic with navigation

# Delivery Assurance: Topology

When using a persistence store for delivery assurance, the store is similar to a second transport. Like the direct path, it mediates message communication among a network of endpoints. It operates in parallel with direct-path transports, as an additional path from publishers to subscribers.

Because the store offers a redundant path, one can say that the store backs the direct paths. Depending on the focus, one can also say that the store backs the network of endpoints, or that it backs the message stream that travels among those endpoints.

Figure 54: Persistence Store as Redundant Message Path

The preceding diagram depicts a direct path through the transport bus, and another path from endpoint to endpoint through a store. (Conceptually, communications to and from the store travel through the endpoint instances. TIBCO FTL software arranges a communication mechanism for this path.)

Note: To configure direct-path delivery assurance, you must disable the durable prefetch feature. For more information, see Durable Prefetch Count.

## Direct-Path and Latency

For delivery assurance with low latency, you must configure a direct path. If a persistence store is the only path between a publishing endpoint and a subscribing endpoint, it is an intermediate hop that introduces latency.

Did you find this helpful?

Yes No
Great!
Thanks for taking the time to give us some feedback.
Sorry about that

Why wasn't this helpful? (check all that apply)

Could not find what I was looking for
Instructions confusing or unclear
Instructions did not work

Want to tell us more?

Please select at least one option or provide details about the issue!!

Error occurred while submitting feedback.

Error2 occurred while submitting feedback.

TIBCO FTL® - Enterprise Edition

Copyright © 2009-2024. Cloud Software Group, Inc. All Rights Reserved.