Wiki says:
GraphQL is an open-source data query and manipulation language for APIs and a query runtime engine.
GraphQL enables declarative data fetching where a client can specify exactly what data it needs from an API. Instead of multiple endpoints that return separate data, a GraphQL server exposes a single endpoint and responds with precisely the data a client asked for. Because a GraphQL server can fetch from separate data sources and present the data in a unified graph, it is not tied to any specific database or storage engine.
My girlfriend coorganizes with friends a small christmass concert for other friends. It's always an amazing event that pushes you instantly into a christmass mood. And because I can't sing or play any instrument I decided to help with something I can actually do. I created a web with info about the concert, about performers and about each performed song.
I love opened and federated technologies, so I was looking for opened social network. I wanted someting that works the same as E-mail does. Everybody can choose if his E-mail account will be hosted on Gmail or for example on Yahoo or if he builds his own E-mail server. Because it doesn't matter where man signs up. Message from user on one provider will find it's way to to mailbox of other user on different provider.