George Georgovassilis writes about information technology architecture
In this post I'll talk about the MVPC (Model-View-Presenter-Controller) design pattern I use in client applications such as progressive web apps and mobile clients. It can be best understood as an evolution of the MVC (model-view-controller) pattern past the MVP (model-view-presenter) pattern. The basics: MVC and MVP You might want to skip this section if … Continue reading The Model-View-Presenter-Controller pattern
Update October 2020: check out this new, improved design. I've wondered for a long time how differential amplifiers are actually realised on the transistor level. Not having received a formal electronics engineering education nor being part of an assorted online community, that question lingered for quite a while unanswered - until yesterday. The ideal differential … Continue reading A differential amplifier built with a current mirror
Last year I wrote about A switching amplifier electronic design which can drive large power loads with high efficiency and tolerable distortion. The operational principle for this is that a pre-stage converts the input signal into a series of pulses which rapidly switch the end-stage on and off - that is a power-efficient mode of … Continue reading A better switching amplifier
I obtained permission to publish my presentation for an internal gig of a security enterprise architecture. When setting up a security architecture in the enterprise context topics like business continuity, people and processes, governance, services and technology are relevant. https://www.slideshare.net/GeorgeGeorgovassilis/security-architecture-127061728
Quick one: you're starting a container through docker-compose and it says a port is in use. You "netstat -plutn" it and find out, that port is in use by docker-proxy. Github user rdavaillaud knows what's going on: stop dockerremove all internal docker network: rm /var/lib/docker/network/files/start docker
George's Techblog 