DevConf.CZ 2020

“GraphQL is a data query language developed internally by Facebook in 2012 before being publicly released in 2015. It provides an alternative to REST and ad-hoc web service architectures.” In this talk, we will * Go through the basics of GraphQL * Discuss the differences with REST * Go through a basic example in Java. We will look at the following GraphQL concepts: * Query * Fragment and Named * Filtering * Variables * Mutation * Error Handling * Introspections