Discover GraphQL's real-world application. In this proactive two-day course, you'll explore essential principles and gain the skills to develop services and clients using GraphQL - a forward-thinking and effective alternative to REST.
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GraphQL
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Learn essential skills
Course overview
Build practical APIs with GraphQL
This focused 2-day training programme introduces you to GraphQL through hands-on labs and guided exercises. Learn how GraphQL operates, how to structure services and clients, and how to write clean, effective queries you can use immediately.
Learning objectives
- Grasp essential API and web service concepts
- Explore GraphQL's advantages over REST
- Develop GraphQL services in your preferred coding language
- Create GraphQL clients using Java, Python, or JavaScript
- Craft powerful and efficient GraphQL queries
- Understand how to define types and schemas in GraphQL
- Use recommended practices to build maintainable GraphQL solutions
- Learn how to inspect GraphQL services with introspection
What you’ll learn
You will leave the course with a strong foundation in GraphQL and the confidence to build, manage and scale your own services and clients. Learn to write advanced queries and use GraphQL effectively in real projects.
Web foundations and core GraphQL concepts
Explore how web services, REST and APIs work, and how GraphQL offers a modern, flexible alternative. Learn the structure of a GraphQL service, how queries and mutations work, and how schemas and types are used to define data interactions.
Building GraphQL services and clients
Gain hands-on experience creating full GraphQL services using frameworks like Apollo (JavaScript), Spring Boot (Java), or Ariadne (Python). Learn to connect clients with real-world GraphQL services using tools such as HttpClient, GQL, or Apollo, depending on your development environment.
Query writing and advanced features
Develop your query-writing skills with features like arguments, variables, aliases, operation names, fragments, and directives. Learn to create dynamic and efficient queries tailored to specific data needs in complex applications.
Schema types, best practices and introspection
Understand GraphQL type systems in depth, including objects, enums, interfaces, input types, unions and lists. Apply practical tips and explore GraphQL introspection and validation techniques to ensure your APIs are robust, scalable and production-ready.
What’s included
- 2 days of expert instruction
- Live virtual delivery format
- Interactive lab-based environment
- Course materials and reference guides
- Real-world coding challenges
- Language choice: Java, Python or JavaScript
- Resources available after course
- Dedicated Q&A opportunities
- Certificate of completion
Key facts
Ideal for
Developers interested in API development and anyone looking to gain practical knowledge of GraphQL.
Prerequisites
Basic programming experience in JavaScript, Python, or Java is recommended to support all activities.
Learning experience
Our experienced trainers and interactive labs create a focused, practical environment – so you can put theory into practice from day one.
FAQs
Learn how to design, implement and test GraphQL APIs and clients from scratch. You’ll finish the course ready to apply your knowledge in real technical environments.
What is the main advantage of learning GraphQL over REST?
GraphQL offers more efficient data fetching by allowing clients to request only the specific data they need. This reduces the number of API calls and simplifies the data structure, making it easier to manage and faster to develop with.
Does the course cover GraphQL server and client development?
Absolutely. You'll learn how to build GraphQL servers and develop clients in Java, Python, or JavaScript - providing end-to-end knowledge for real-world API implementation.
How is the training delivered?
ILX delivers this course through a live virtual classroom format, led by an expert trainer. You'll be able to interact in real time, complete hands-on labs, and ask questions throughout the sessions.
What support is available after the course finishes?
You’ll receive access to post-course materials, including course notes and code samples. ILX also provides a certificate of completion and resources to help you continue learning independently.
Will this course help me design better APIs for my organisation?
Definitely. The course covers design principles, schema best practices, and advanced querying techniques that enable you to build efficient, scalable APIs tailored to your business needs.
What our customers say
“Tarn is an excellent instructor. Everything was clearly communicated. One of the best courses I have attended in recent years.”
Simon, DBA – Government
“Thoroughly enjoyed the course, very informative and a good balance between instruction and practical work.”
Megan, Transport
Why study with ILX
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