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Master GraphQL with Adaptive AI.

Master GraphQL across 18 topics - Foundations, Intermediate, and Advanced - guided by Leyaa's adaptive intelligence.

3Parts

18Topics

139Patterns

35hEst. duration

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GraphQL Course

3 - part learning journey

Foundations

6 topics · 47 patterns

Beginner

Intermediate

6 topics · 46 patterns

Intermediate

Advanced

6 topics · 46 patterns

Advanced

Begin Part 1: Foundations

✦ Course Structure

Your GraphQL Journey in 3 Parts

Each part builds on the last - a deliberate progression from beginner to advanced.

Beginner

Part 1: Foundations

Covers GraphQL Basics and Philosophy, Schema Definition Language (SDL), Queries and 3 more topics.

6Topics

47Patterns

View topics

Intermediate

Part 2: Intermediate

Covers Advanced Query Features, Subscriptions, Error Handling and 3 more topics.

6Topics

46Patterns

View topics

Advanced

Part 3: Advanced

Covers Schema Design Patterns, Performance Optimization, Client-Side GraphQL and 3 more topics.

6Topics

46Patterns

View topics

Curriculum

Everything You'll Learn

Explore every topic and pattern in the course.

GraphQL

3 parts · 18 topics · 139 patterns

Part 1: Foundations6 topics · 47 patterns

Beginner

GraphQL Basics and Philosophy

7 patterns

Why GraphQL exists

GraphQL vs REST comparison

Over-fetching and under-fetching problems

Single endpoint architecture

Schema-first development

GraphQL Playground and tools

First GraphQL query

Schema Definition Language (SDL)

8 patterns

Why schema defines the API contract

Type definitions

Scalar types (String, Int, Float, Boolean, ID)

Object types

Required fields with non-null (!)

List types

Enum types

Input types

Queries

9 patterns

Why queries request specific data

Aliases for field renaming

Fragments for reusable selections

Inline fragments

Query variables

Mutations

8 patterns

Why mutations modify data

Mutation syntax

Input arguments for mutations

Create mutation pattern

Update mutation pattern

Delete mutation pattern

Mutation return types

Input type for complex arguments

Resolvers

8 patterns

Why resolvers connect schema to data

Resolver function signature

Parent (root) argument

Type Relationships

7 patterns

Why relationships model real data

One-to-one relationships

One-to-many relationships

Many-to-many relationships

Bidirectional relationships

Nested resolver execution

Relationship design patterns

Part 2: Intermediate6 topics · 46 patterns

Intermediate

Advanced Query Features

8 patterns

Why advanced features improve flexibility

Pagination with first and after

Cursor-based pagination

Connection pattern (edges, nodes, pageInfo)

Filtering arguments

Sorting arguments

Search across types

Query depth and complexity

Subscriptions

7 patterns

Why subscriptions enable real-time data

Subscription syntax

Subscription resolvers

WebSocket transport

Subscription filtering

Subscription lifecycle

Unsubscribing

Error Handling

8 patterns

Why error handling differs from REST

GraphQL error format

Partial success responses

Field-level errors

Custom error extensions

Error classification

Validation errors

Authentication errors in context

Authentication and Authorization

7 patterns

Why securing GraphQL is critical

Context-based authentication

JWT integration

Directive-based authorization

Field-level permissions

Role-based access control

Schema visibility control

Server Implementation (Node.js)

8 patterns

Why server setup enables GraphQL

Apollo Server setup

Express integration

Schema definition

Resolver organization

Context setup

Data source integration

Server middleware

Database Integration

8 patterns

Why databases back GraphQL

Prisma ORM with GraphQL

MongoDB with GraphQL

SQL database resolvers

DataLoader for batching

N+1 problem and solutions

Connection pooling

Transaction handling

Part 3: Advanced6 topics · 46 patterns

Advanced

Schema Design Patterns

8 patterns

Why schema design affects usability

Interface types

Union types

Abstract type resolution

Relay specification compliance

Node interface pattern

Input validation patterns

Schema evolution strategies

Performance Optimization

8 patterns

Why GraphQL performance needs attention

Query complexity analysis

Depth limiting

DataLoader batching and caching

Persisted queries

Automatic query optimization

Response caching strategies

Field-level cost analysis

Client-Side GraphQL

8 patterns

Why client libraries simplify usage

Optimistic UI updates

Refetching and polling

Error handling on client

Testing GraphQL

7 patterns

Why testing validates schema behavior

Schema testing

Resolver unit tests

Integration tests with test server

Mocking resolvers

Snapshot testing queries

Performance testing

Federation and Microservices

7 patterns

Why federation scales GraphQL

Apollo Federation concepts

Subgraph definition

Entity references

Gateway composition

Shared types across subgraphs

Federated authentication

Tooling and Best Practices

8 patterns

Why tooling improves developer experience

Code generation from schema

Schema linting

Introspection control

Schema documentation

GraphQL IDE extensions

Migration from REST to GraphQL

GraphQL security best practices

Why Leyaa

Not just a course. A learning intelligence.

Leyaa doesn't just deliver content - it understands where you are, what you need, and how to get you there fastest.

Adaptive Diagnostics

Leyaa identifies which of the 139 patterns you've mastered and which need work - before you waste time on what you already know.

Pattern-Level Precision

Every pattern gets a verdict - Learn, Practice, or Skip - so your study time goes exactly where it counts.

Intelligent Pacing

Leyaa reads your velocity across the whole course and adapts your focus list dynamically, keeping you in the optimal learning zone.

Before & After Visibility

Every assessment creates a snapshot. Retake anytime to see exactly how much you've grown - topic by topic, pattern by pattern.

Learner Autonomy

Leyaa recommends, never restricts. Override any suggestion and explore at your own pace - the system tracks everything regardless.

Clear Learning Path

Foundations → Intermediate → Advanced - a structured journey where each part sets you up perfectly for the next.

GraphQL

Ready to master GraphQL?
Start your journey today

Start your diagnostic now. Build mastery across all 18 topics in under 15 minutes.

18 Topics

139 Patterns

Personalized roadmap

Master GraphQL with Adaptive AI.

Your GraphQL Journey in 3 Parts

Everything You'll Learn

GraphQL

Not just a course. A learning intelligence.

Ready to master GraphQL?Start your journey today

Ready to master GraphQL?
Start your journey today