Giacomo Vacca

This blog has been historically focused on technical topics in areas related to Real Time Communications, but I'm taking the liberty to digress a little. I've been reading recently about the dynamics of performance in running. I'm just an amateur runner, and I always train (and race) alone, so I felt the need to make it more interesting than just reading training tables. I've been studying what is it that limits performance. "Train more", unfortunately, not only doesn't always work, but needs to take into account injuries, and overtraining in general. One of the first concepts that struck me is that it's been proven that fatigue, and the consequential slow down, does not mean that the body is unable to continue with that effort. What's behind slowing down is a sort of protective mechanism in our nervous system, which wants to prevent the body to reach exhaustion. Our nervous system is constantly getting feedback signals from the bo...

Some time ago I prepared an introductory seminar on Docker, which I called "Docker from scratch". The audience was a local group of heterogeneous developers. As it typically happens, preparing that material was a great opportunity to understand better some of the aspects. I then published the slides in Slideshare. I notice now that they got a decent number of views and downloads, so I'm linking those slides here as well for reference . One big change in respect to 2016 is represented by the choice of abandoning Docker Toolbox in favour of running Docker directly on macOS. I have to say I liked the sandboxing that came with Docker Toolbox, where the docker engine ran inside VirtualBox, now only available for older versions .