First impressions of IBM BlueMix

CloudPundit: Massive-Scale Computing

IBM has launched the beta of BlueMix, its Cloud Foundry-based PaaS. Understanding what BlueMix, and IBM, do and don’t bring to the table means a bit of a digression into how Cloud Foundry works as a PaaS. Since my blog is usually pretty infrastructure-oriented, I’m guessing that a significant percentage of readers won’t know very much about Cloud Foundry (which I’ll abbreviate as CF).

In CF, users write application code, which they deploy onto CF runtime environments (defined by “buildpacks”) — i.e., programming languages and associated frameworks. When CF is deployed as a PaaS, it will normally have some built-in buildpacks, but users can also add additional ones through a mechanism called buildpacks (which originated at Heroku, a PaaS provider that is not CF-based). CF runs applications in its own “Warden” containers (which are OS-independent), staging the runtime and app code into what it calls “droplets”. These application…

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