This practical guide to MicroPython delivers the knowledge you need to roll up your sleeves and create exceptional embedded projects with this lean and efficient programming language that is an implementation of Python 3 for microcontrollers and embedded systems. Nicholas Tollervey takes you on a journey from first steps to advanced book is ideal for Python developers, introducing the types of devices that run MicroPython, and examining how the language uses and interacts with hardware to process input, connect to the outside world, communicate wirelessly, make sounds and music, and drive robotics projects.
So, some not so great things happen here. First, the device has to have an associated Apple ID. Not a huge deal if the device is assigned to a person, but what if it’s a shared device, or maybe used as a kiosk? Second, entering an Apple ID and password and joining the program is a lot of extra work when trying to deploy to a ton of devices. Last, the wait period between joining a program and receiving the apps and be long. We’ve seen anywhere from a couple of minutes all the way up to a few hours. This can be enough time to provoke a user to call IT for help.
Rails running on Matz's Ruby Interpreter (the de facto reference interpreter for Ruby) had been criticized for issues with scalability.  These critics often mentioned various Twitter outages in 2007 and 2008, which spurred Twitter's partial transition to Scala (which runs on the Java Virtual Machine ) for their queueing system and other middleware .   The user interface aspects of the site continued to run Ruby on Rails  until 2011 when it was replaced due to concerns over performance