A very long comment that ignores the one it purports to reply to...
Microservices are called that because they reside within an app that itself provides a service.
Otherwise, of course you could call everything and anything 'microservice' but then the term would become meaningless.
Authentication is a service that is obviously used by other microservices, otherwise it would have no use.
But with microservices coupling is as loose as possible.
Your authentication microservice provides an interface (REST or whatever) independent on the underlying implementation and it does not matter how it implemented. As long has the interface 'contract' is fulfilled you can re-implement it from Java to Rails, or move it from here to there, if you wish and that is completely transparent to all other microservices.
In developed countries things haven't changed that much.
If you look at London (since that's essentially the article), population has actually only reached back to its 1950 level.
But attractive cities can now pull people and investment from a global pool of billions of people and thus the market does its thing and prices move accordingly.
> Even if four people's names are on a mortgage, if one or more stop paying, the mortgage lender has the right to demand full repayments from whoever they can reach, he explains.
This is called "joint and several liability" and is the legal position for many agreements when a party is made of several people (at least in the UK).
For example, people sharing a flat/house as renters will have the same liability unless they have separate tenancies. This is extremely common but surprisingly many people have no clue about it and think that they are fine paying "their share" of the rent.
Children in some countries still have no access to education, and here some people are in awe that children skip school for nothing.
This is a bad joke.
If they want to be taken seriously they should protest outside school hours, that'd show their grit and motivation, instead of wasting the good fortune they have to be in school in the first place.
I have just calmly stated a fact and called out a rather baseless allegation.
If you condone this nefarious anti-Chinese climate and fake news, please just say so and I'll leave. It looks more and more that I am being harassed.