PostGIS would get you up and running, but is not particularly quick unless you have a budget and the knowledge to tune it. It is however probably the most mature, and will be able to do anything you need.
If you need read speed, check out Clickhouse, or something in memory, like Tile38. Clickhouse in my experience is at least 50-100x faster for a point in polygon than Postgis out of the box.
Debunked how? It seems the consensus is that it’s just as secure as using a username and password and allowing the user to reset via email. It’s been discussed here a few times.
Got the work through a family friend, it's his business. I had to learn COBOL (managed through Visual Studio these days thank god) and have ended up contributing to the main application, converting Microsoft c++ and c# examples into COBOL, e.g Gdi32 printing, windows forms, wpf and so on.
Luckily as it's Managed COBOL and based on .NET you can call classes written in C++/C# so I've been doing that where possible!
Good fun and completely different to my usual line of Web Dev.
What's interesting about this is that Cloudfare seem to duck a big chunk of the flak - everyone immediately suspects their own server, as cloudfare gives a pretty generic error page.
Lots of people chasing Heroku on twitter currently, for example when it's not their fault at all.
I've always thought that music recommendation systems should look at the actual music, and not as much at the surrounding meta-data.
What kind of instruments are used?
What key is it in?
What structure is the song in? i.e does it have a standard format, is it prog, is it a symphony etc
What language is it in?
What Rhythms are used?
That information, used properly, should be able to actually recommend music that the listener enjoys, not just guesswork that is usually rubbish. The Spotify algorithm for example...
Canned and cartoned(!) coffee is all over the place now in the UK. Starbucks make a lot of it, and there seems to be quite a few smaller brands popping up.
It's all full of sugar though, more like slightly coffee flavoured milkshakes. Combination of the sugar and caffeine really works though...