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Author: mpareene

DataPower XI52 in a nutshell

The IBM DataPower XI52 appliance provides an ESB backbone that facilitates (brokers) communication between services. Features include…

Protocol virtualization Communication between parties who use different protocols such as http, https, ftp, MQ. ESB bridges (converts) these protocols.
Message format virtualization For example, one party sends XML (SOAP) message, ESB converts to JSON, which is sent to backend.
Endpoint virtualization WSDL services that used to exist on servers can be moved to ESB.
XML attack security Including DoS, MMXDos, and other attacks.
Configuration driven interface Less code to write
XML processing at wire speed. Versus server-based ESB solutions that operate at software speed.
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Sporadic exceptions

Sporadic exceptions in a clustered environment may indicate that one of the cluster members is mis-configured. For example, a jar file version is out-of-date on one of the cluster members. Or, if you are making web service calls to a VIP that load balances to multiple producer hosts, and you are getting sporadic errors related to SOAP calls, this generally indicates that one of the web service producer hosts is mis-configured.

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Logon and remote execution without using passwords.

We can leverage SSH public-key authentication between hosts to enable all sorts of useful functionality, including…

  • Password-less login from HostA to HostB
  • Ability to execute remote commands from HostA on HostB
  • We can automatically administer an entire network of servers from a central server

I once set up a very large and complex WebSphere Commerce site for a Fortune 500 retailer that used this procedure to remotely execute various commands, including stopping/starting, and generating reports for, eXtreme Scale caching.

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My friend Penelope



Penelope was my Newfoundland dog, who passed away at the age of 13 (ancient for a Newfie) in the summer of 2015. Penelope possessed Beauty without Vanity, Strength without Insolence, Courage without Ferocity, and all the virtues of Man without his Vices.

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