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Web Development

GraphQL

GraphQL by Example

GraphQL by Example

Loại khoá học: Web Development

Learn GraphQL by writing full-stack JavaScript applications with Node.js, Express, Apollo Server, React, Apollo Client.

50.000 VND

120 VND

Đầy Đủ Bài Giảng

Học Online Tiện Lợi

Kích Hoạt Nhanh 2-5 Phút

Thanh toán tự động

Được phép tải xuống

Mô tả

More and more teams are choosing GraphQL instead of (or along with) REST for their web APIs. GraphQL queries give clients great flexibility in the way they request data from the server, preventing issues such overfetching or underfetching of data, and allowing multiple resources to be retrieved in a single request.

In this course you'll learn how to use GraphQL both on the server side and in client applications through practical examples in the form of full-stack JavaScript applications. You will be introduced to all the main GraphQL concepts like schema definition, Queries, Mutations, and Subscriptions, as well as to solution to common requirements such as handling authentication/authorization and client-side caching.

The examples use Apollo Server with Node.js and Express on the backend and React on the frontend, with GraphQL-Request first, then Apollo Client as GraphQL clients. GraphQL-WS is used for subscriptions.

The aim however is not just to cover specific GraphQL libraries, but to give you a more general understanding of the underlying concepts. For instance, GraphQL client libraries are introduced only after learning how to write a simple client "by hand", to make sure you understand the GraphQL over HTTP format.

This course assumes good knowledge of modern JavaScript, and ideally some familiarity with Node.js/Express and React.

Bạn sẽ học được gì

Build a GraphQL server based on NodeJS, Express and Apollo Server

Call GraphQL APIs from JavaScript using GraphQL-Request or Apollo Client

Handle Authentication/Authorization, Caching, and more

Receive real-time updates with GraphQL Subscriptions

Yêu cầu

Good knowledge of modern JavaScript, including ES6+ and NodeJS
Some knowledge of Express and React preferable but not strictly required

Nội dung khoá học

14 sections

Introduction

3 lectures

What is GraphQL

05:04

Required Tools

00:33

Course Advice

00:42

Fundamentals

8 lectures

Schema Definition

06:05

Apollo Server

06:13

Query Language

06:43

GraphQL Over HTTP

04:37

GraphQL Client

07:42

Github Repository

04:51

Code-First vs Schema-First

10:22

Final Code

00:08

Schema

11 lectures

Job Board Architecture

06:45

Job Board Project

07:44

Github Repository

00:28

Apollo Server with Express

08:51

Custom Object Types

07:36

Arrays and Non-Nullability

07:02

Database Access

07:13

Field Resolvers

08:15

Resolver Chain

05:15

Documentation Comments

04:10

Object Associations

06:56

Queries

8 lectures

Starting Code

00:16

GraphQL-Request

07:04

Component State in React

05:02

Query Arguments

08:19

Query Variables

07:02

Exercise: Company by ID

04:45

Bidirectional Associations

06:39

Recursive Queries

04:23

Errors

4 lectures

Starting Code

00:14

GraphQL Errors

04:47

Custom Errors

05:15

Request States

07:37

Mutations

7 lectures

Starting Code

00:14

Mutations

08:53

Input Types

04:46

Aside: Database Reset

01:57

Mutation Requests

05:02

Exercise: Delete Job

04:03

Exercise: Update Job

03:35

Authentication

8 lectures

Starting Code

00:14

Authentication Flow

07:23

Resolver Context

08:11

User-Company Association

04:49

Client Authentication

05:07

Secure Delete

05:46

Exercise: Secure Update

01:57

Where to Authenticate

04:10

Caching with Apollo Client

9 lectures

Starting Code

00:14

Apollo Client Features

03:57

Apollo Client Setup

03:48

Query Method

02:56

Mutate Method and Auth Link

07:36

Apollo Client Cache

07:39

Fetch Policies

06:07

Cache Manipulation

06:02

Fragments

04:03

Apollo React Integration

7 lectures

Starting Code

00:14

useQuery Hook

06:03

React Custom Hooks

03:18

Exercise: useJob and useJobs

03:27

useMutation Hook

04:57

useMutation Result

02:56

Exercise: useCreateJob

04:48

Data Loaders

4 lectures

Starting Code

00:14

N+1 Query Problem

04:40

Batching with DataLoader

07:05

Per-Request Cache

05:57

Pagination

9 lectures

Starting Code

00:14

Pagination Strategies

08:40

Ordering

04:49

Limit Clause

03:55

Offset Clause

03:47

Basic Pagination UI

07:15

Total Count

08:25

Full Pagination UI

07:11

Final Code

00:07

Subscriptions

12 lectures

Chat Project

05:57

Github Repository

00:28

Cache updateQuery

06:12

Subscription Definition

06:14

GraphQL-WS Server

05:49

Subscription Resolver

06:05

GraphQL-WS Client

07:17

useSubscription Hook

06:04

WebSocket Protocol

04:07

Connection Params

04:51

WebSocket Server Auth

07:52

Final Code

00:07

TypeScript Code Generation

9 lectures

Job Board TypeScript Project

08:05

Github Repository

00:33

Server Code Generator

07:27

Typed Resolvers

07:19

Typed Context

05:36

Watch Mode

05:20

Client Code Generator

06:07

Typed Queries

09:08

Final Code

00:07

Conclusion

1 lectures

Congratulations and Bonus

00:23

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