My second “Pique of the Week” is Discover Graph Databases with Neo4j and PHP by Christophe Willemsen.
I've been meaning to look into graph databases for some time and that interest was spurred on again when Facebook announced Relay and GraphQL at React.js Conf. So when Discover Graph Databases with Neo4j and PHP dropped into my feed reader this week I couldn't ignore it.
Like everyone else I am still waiting for Relay and GraphQL to be released to the public so I can see what is involved in implementing the server side, but with uncanny timing Facebook did release some more details today. Time will tell if things like Neo4j are even suited for use with GraphQL.