Learn to build a GraphQL server in Java step by step
.MP4, AVC, 1280x720, 30 fps | English, AAC, 2 Ch | 7h 1m | 4.32 GB
Instructor: Benjamin Habegger
Deep dive into the graphql-java library and learn everything about schemas, datafetchers, wirings, etc.
What you'll learn
- Understand the basics of GraphQL (schema, data fetchers)
- Know how to write a GraphQL schema using the schema definition language (SDL)
- Know how to write and wire DataFetchers
- Know how to unit test a GraphQL engine
- Know how to expose a GraphQL engine over HTTP using Jetty
- Know how to create a DataFetcher for data from an SQL database
- Get an in depth understanding of all GraphQL Schema types and how to wire them
- Understand how GraphQL schema introspection works
- Have in in depth understanding of querying a GraphQL API
- Understand how to evolve a GraphQL schema
- Understand how to generate all or parts of a schema through code
- Know how to extend a GraphQL engine using instrumentations
- Understand the execution workflow of a GraphQL query
- Know how to optimize performance by using batch loading
Requirements
Java programming skills is a minimal requirement
Description
In this course we will take a deep dive into GraphQL and how to build a GraphQL server in Java using the production ready graphql-java library. After this course you will master everything you need to know to build an efficient and modular GraphQL service adapted to any use case.
We will walk through everything you need to know to create a GraphQL server and go through the different notions with hands-on examples and exercises for you to train. After this course you should be comfortable in building your own production ready GraphQL server.
We will walk through:
- Schema creation via the schema description language (SDL) and via code
- Writing DataFetcher (also called resolvers) both synchronous and asynchronous
- Wiring the data fetchers with your schema
- Building an GraphQL service over HTTP embedding GraphiQL as a GUI
- All the schema and query constructs of offered by GraphQL
- All about schema introspection
- Everything there is to know about GraphQL query execution
- How to implement batch loading to optimize database access
Throughout the course we will illustrate these concepts with hands-on presentations and exercises.
We will be using a concrete database as a demonstration use case and build a full GraphQL service on top of it.
Who this course is for:
Java developers wanting to learn how to build a GraphQL service
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