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is an integrated system architecture where separate application modules (components) communicate with each other through a
(Message Oriented Middleware).
Message-driven architecture involves
(entities that generate and send messages) and
(entities that receive, read, and process messages). A message broker accepts messages from a producer and routes them to
. Each message is stored in a queue until the
is ready to process it. Messages can be delivered to the consumers asynchronously (based on the pre-defined schedule).
Within the gateway,
(a rule-based routing- and mediation middleware) is used as a message broker. It is integrated with
that serves as a transport layer. Note that Apache Camel should be running on both gateway and data filter servers.
The business logic of the system is split into elements called
. Jobs always act as consumers, and may also be producers in some specific cases. In the gateway, there are two types of jobs:
Each job has the following core parameters:
number of consumers
(active or inactive), and a set
time of execution
in cron format (for timers).
You can keep track of the job queues execution time and statuses on the gateway user interface: Administration => System => Jobs => Job Messages. If the queue failed while processing, you can restart it with the
To activate/deactivate tasks, set or modify cron expressions for timers, define the number of their consumers, or send a message manually, use Administration => System => Jobs => Job Objects form.
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