
I got to spend a couple of days this week at DockerCon and learn a bit more about software containers. I’d always assumed that containers were a slightly different form of virtualization, but thankfully I’ve learned my lesson there. What I did find out about containers gives me a bit of hope about the future of applications and security.
One of the things that made me excited about Docker is that the process isolation idea behind building a container to do one thing has fascinating ramifications for application developers. In the past, we’ve spent out time building servers to do things. We build hardware, boot it with an operating system, and then we install the applications or the components thereof. When we started to virtualize hardware into VMs, the natural progression was to take the hardware resource and turn it into a VM. Thanks to tools that would migrate a physical resource to a virtual one in a single step, most of the first generation VMs were just physical copies of servers. Right down to phantom drivers in the Windows Device Manager.
As we started building infrastructure around the idea of virtualization, we stopped migrating physical boxes Continue reading
Just a note for my own reference really –
The images you upload via the GUI to upgrade Space end up on the filesystem in /var/cache/jboss/jmp/<imageversion> directory. In that directory is the actual image, plus a file called appVersionListFile.txt – this file seems to tell the system what other Space apps it is compatible with.
It seems to upload the image into this directory, and then extracts all the various .rpm files from it into /var/cache/jboss/jmp/payloads/<imageversion> directory.
I confirmed this by performing an ‘rm -rf <imageversion>’ on both the above directories, then uploading another image via the GUI again. Both directories re-appeared. I doubt this is recommended by TAC though, so do this at your own peril.
Large parts of the internet may need to quickly adopt alternative revenue methods to thwart a massive surge in ad blocking.
Ad blocking is not going away, says eMarketer, a research firm that has just published startling projections. In fact, the digital marketing expert says more than a quarter of U.S. internet users will use ad blockers to perform ad-free web browsing in 2016.
A double digit (34 percent) increase will lead to 69 million ad blocker users this year, eMarketer predicts.
And it’s going to get worse. The researcher says that number will be closer to 86 million ad blocking internet users in 2017. That’s growth of another 24 percent and will mean that almost a third (32 percent) of all internet users will use the barriers next year.
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