Flavio Bertini, Università "La Sapienza" - Roma: Adapter-Logic Application at
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Adapter-Logic Application : a JGroups based integration framework for heterogeneous environments Flavio Bertini Distributed Systems Seminars
Transcript of Flavio Bertini, Università "La Sapienza" - Roma: Adapter-Logic Application at
Adapter-Logic Application: a JGroups based integration framework
for heterogeneous environments
Flavio Bertini
Distributed Systems Seminars
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Roadmap1) Introduction to group communication
2) Group communication issues3) The JGroups solution
4) A case study: Adapter-Logic Application✔ Why introduce an adapter?✔ How A.L.A. works✔ Operational modes✔ The clustering subsystem✔ How JGroups helped A.L.A.
5) Other application areas of JGroups
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Group communication
Every Distributed Systems need to communicate through a reliable layer.
All nodes cooperating for a unique target may have the necessity to rely on a complex communication architecture to merge/compare data (e.g. SETI@home, Clustering, etc.)
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Group Communication issuesThe most common problems in group communication are:✔ Keep consistence between replicas✔ Prevent data corruptions✔ Ensure a message is delivered to recipients✔ many more...
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Group Communication issuesThe most common problems in group communication are:✔ Keep consistence between replicas✔ Prevent data corruptions✔ Ensure a message is delivered to recipients✔ many more...
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Group Communication issuesThe most common problems in group communication are:✔ Keep consistence between replicas✔ Prevent data corruptions✔ Ensure a message is delivered to recipients✔ many more...
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The JGroups solution
JGroups is a multi platform toolkit for a reliable group communication
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The JGroups solution
JGroups is a multi platform toolkit for a reliable group communication
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A case study:Adapter-Logic Application
A.L.A. is:✔ a JGroups success story✔ an integration framework (adapter) for heterogeneous environments and architectures.✔ a solution to integrate legacy systems in SOA flows
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A case study:Adapter-Logic Application
A.L.A. is:✔ a JGroups success story✔ an integration framework (adapter) for heterogeneous environments and architectures.✔ a solution to integrate legacy systems in SOA flows
Only one platform to manage several architectures!
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Why introduce an adapter?
Overcome the barriers due to the lack of a common language between heterogeneous systems
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How A.L.A. works
A.L.A. works through a very scalable plugins system called Controllers and Connectors
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How A.L.A. works
A.L.A. works through a very scalable plugins system called Controllers and Connectors
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A.L.A. operational modes
Two operational modes:✔ Active/Active
hot standby sparing: two or more A.L.A. instances run in parallel.
→ High Availability and Load Balancing✔ Active/Passive
cold standby sparing: two or more A.L.A. instances but only one is running.
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High Availability and Load BalancingActive/Active:
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High Availability onlyActive/Passive:
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The Clustering subsystem (internals)
A single point of failure
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The Clustering subsystem (internals)
The fault tolerant adapter model
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The Activation Queue
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The Activation Queue
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The Activation Queue
The Activation Queue is reorganized
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How JGroups helped A.L.A.
The Cluster events propagate through the Network thanks to the JGroups API
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Another JGroups utilization example
JBoss Clustering modular stack
24All A.L.A. related images are property of Sunnyvale. I wish to thank Denis Maggiorotto,who is the CEO and founder. All rights reserved.
