NonStop Systems Introduction

Introduction
NonStop Systems Introduction—527825-001
1-7
The ZLE Architecture
For a simple example of how ZLE can improve business operations, consider what
happens when a customer orders a product over the internet. In the traditional way of
linking operational systems, the order application would reach into the credit card
system to check the customer’s credit card balance. This could result in latency
problems because:
•
Interacting with one another in this manner increases the burden on the business
systems.
•
If the credit card system were offline for some reason, there would be a further
delay in filling the customer’s order.
In a ZLE environment, the customer’s credit card balance could be cached in the large
central database at the center of the system, where it would be readily available to any
application that required it.
The ZLE Architecture
Now let’s take a closer look at the individual components of a ZLE system. Figure 1-3
on page 1-7 shows the basic ZLE architecture.
Figure 1-3. ZLE Components
ZLE applications
ZLE hub
ZLE data store
Enterprise Application
Integration services
Adapter
Operational business
systems
Adapter
vst003.vsd
Adapter