Monday Jul 21, 2014

Elastic PaaS with WebLogic and OpenStack, part I By Jernej Kaše

In my previous blog I described the steps to get OpenStack on Solaris up and running. Now we'll explore how WebLogic and OpenStack can work together to deliver truly elastic Middleware Platform as a Service.
Middleware / Platform as a Service goals
First, let's define what PaaS should be : PaaS offerings facilitate the deployment of applications without the complexity of managing the underlying hardware and software and provisioning hosting capabilities.
To break it down:
- PaaS provides a complete platform for hosting solutions (Java EE, SOA, BPM, ...)
- Infrastructure provisioning (virtual machine, OS, platform) and managing is hidden from the PaaS user [administrator or developer]
- Additionally, PaaS could / should define target SLAs, and the platform should ensure the SLAs are meet automatically.
PaaS use case
To make it more tangible, we have an IT Administrator who has the requirement to deploy a Java EE enterprise application. The application is used by external users who need to submit reports by the end of each month. As a result, the number of concurrent users will fluctuate, with expected huge spikes around the end of each month. Read the complete article here.

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