A Key (like a primary key) A unique identifier for an entity; it’s usually a long number. But it’s more than that. It’s a complex object which contains the unique ID (64-bit integer), Entity Name, Path, Parent, etc Datastore also gives you. URL Safe Key; that you can safely pass around. Here is how you decode it.
An RSS feed is a standardized format to get an update from a website or web service. There are a few feed formats (RSS, Atom, JSONFeed) of which RSS is the most popular one. I use RSS feed on daily basis to read blogs and as well to get updates from my own services. Here are the three FOSS Apps that I use.
Getting started Nooelec NESDR SMArt and Diamond RH 795, using the Gqrx. It’s been a decent combo to get started with listening to bands.