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{section} h1. Introduction
The Petals ESB "Shared Area", more generally called "Registry", is an internal component in charge of storing internal data. The Petals ESB "Shared Area" can be viewed as a database shared by all Petals ESB nodes of a given Petals [topology|Topology Configuration].
For example, before sending a message to a service provider, the Petals ESB "Router" will request the Petals ESB "Shared Area" for the right endpoint according to the information in the message (interface name and/or service name and/or endpoint name).
Data stored in the area are:
Data stored in the area are all data that must be shared by all Petals ESB containers:
* endpoint name,
* service name,
* service name,
...{section}
{anchor:Implementations}
h1. Implementations
Seevral implementation exist for the Petals ESB "Shared Area". According to your use-case, select the right one:
|| Petals ESB Shared Area implementation name || Default implementation ? ||
| the [Petals ESB Stanadlone Registry] | Yes, for a standalone topology |
| the [Petals ESB Hazelcast Registry], client part of [Petals Registry Overlay] | Yes, for a distributed topology |
h1. Implementations
Seevral implementation exist for the Petals ESB "Shared Area". According to your use-case, select the right one:
|| Petals ESB Shared Area implementation name || Default implementation ? ||
| the [Petals ESB Stanadlone Registry] | Yes, for a standalone topology |
| the [Petals ESB Hazelcast Registry], client part of [Petals Registry Overlay] | Yes, for a distributed topology |
h1. Installation
...# otherwise, the implementation used is the one available in the Petals ESB classpath.
See the documentation of the [Petals ESB "Shared Area" implementations|#Implementations] for other configuration parameters.
h2. Logging configuration parameters
...Petals.Communication.SharedArea.level=FINE
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{code}
{anchor:Implementations}
h1. Implementations
Only one implementation exists for the Petals ESB "Shared Area":
|| Petals ESB Shared Area implementation name || Default implementation ? ||
| the [Petals ESB Hazelcast Registry] | Yes |