GraphQL - 2 days Online Classroom

GraphQL - 2 days Online Classroom

Build modern, flexible APIs with GraphQL, the powerful query language designed to simplify data access and improve application performance. This hands-on course introduces the core concepts of GraphQL, guiding you through schema design, queries, mutations, and API development using industry best practices.

You'll learn how GraphQL compares to REST, create efficient APIs that return only the data clients need, and explore techniques for testing, debugging, and securing GraphQL services. Through practical exercises, you'll gain the skills to design scalable APIs that support modern web and mobile applications with improved performance and developer productivity.

Key Features

• Course and material in english
• Beginner level
• 2 days of live instructor-led virtual training (8 hours / day)
• Interactive lab-based environment
• Language choice: Java, Python or JavaScript
• Real-world coding challenges
• Resources available after course
• 30+ recommended study hours
• Certificate included

Learning Outcomes

• Web & GraphQL Fundamentals: Understand web services, REST APIs, and the core concepts of GraphQL, including schemas, types, queries, and mutations.
• Building GraphQL Services & Clients: Learn to develop GraphQL APIs and connect client applications using popular frameworks and tools across JavaScript, Java, or Python.
• Queries & Advanced Features: Master GraphQL queries using variables, arguments, aliases, fragments, and directives to build efficient and flexible data requests.
• Schema Design & Best Practices: Explore GraphQL type systems, introspection, and validation while applying best practices to create scalable, secure, and maintainable APIs.

Target Audience

• Backend and frontend developers
• Full-stack software engineers
• API developers and integration specialists
• DevOps engineers working with modern applications
• Software architects and technical leads
• Anyone looking to build or consume GraphQL APIs

Prerequisites

• Basic programming knowledge in any language
• Familiarity with web technologies such as HTTP and APIs
• A basic understanding of REST APIs is helpful but not essential
• Experience with JavaScript or another backend language is beneficial

Course Outline

Day 1: GraphQL Fundamentals & Development

• Review API, HTTP, JSON, REST, and web service fundamentals
• Understand GraphQL concepts, architecture, schemas, queries, and mutations
• Build GraphQL services using Java, Python, or JavaScript frameworks
• Develop GraphQL clients to consume APIs
• Practice building end-to-end GraphQL applications

Day 2: Advanced GraphQL Features

• Write advanced queries using arguments, variables, aliases, and fragments
• Work with GraphQL types, including scalars, enums, lists, unions, and interfaces
• Understand schema validation, execution, and introspection
• Apply GraphQL best practices for scalable API development
• Build efficient, maintainable, and production-ready GraphQL APIs

FAQ

When is the class held?

The majority of the class is a full-day online course from morning to afternoon CET with 8 hours / day straight. However, please contact us to confirm the final detailed schedules.

What is GraphQL?

GraphQL is a query language and runtime for APIs that allows clients to request exactly the data they need in a single request, reducing over-fetching and improving performance.

What is the advantage of learning GraphQL over REST?

GraphQL enables more efficient data retrieval by allowing clients to request only the required information, reducing unnecessary API calls and improving development flexibility.

Do I need previous GraphQL experience?

No. The course is suitable for beginners with basic programming and web development knowledge.

Will the course include hands-on exercises?

Yes. You'll build GraphQL schemas, create queries and mutations, and work through practical API development exercises.

Who should learn GraphQL?

GraphQL is valuable for frontend and backend developers, full-stack engineers, API developers, and software architects building modern applications.

What skills will I gain?

You'll learn to design, build, test, and optimize GraphQL APIs while applying best practices for performance, security, and maintainability

Will this course help me build better APIs?

Yes. You'll learn GraphQL design principles, schema development, best practices, and advanced querying techniques to create scalable and efficient APIs.