Graphql A goodbye to massive datas, the basic what you need to know

1. A goodbye to massive datas,
the basic what you need to know
Tauan Tathiell de Aleluia Camargo
Helio Vitorino Soares Junior

2. About us
Tauan Tathiell / @lukyhenson
➢ Developer at Codeminer42
Helio S. Junior / @hjJunior
➢ Developer at Codeminer42

3. Created by

4. That is a new way to
Build sql?

5. DEfinitely
no!

6. So, what is graphql?

7. VS

8. What is rest?

9. REST: Representational State Transfer
● History
● Architecture Model
● Resources based in endpoints(URL’s)
● Works with the HTTP verbs [GET, POST, PUT, PATCH,
DELETE]

10. Was created by Roy Fielding and he
defended the REST pattern on his
doctorate degree in 2000, but REST has
been developed in between 1996 - 1999.
HIstory

11. 2000’s

12. 2018

13. THE REST ARCHITECTURE
WAS NOT DEVELOPED FOR
THE APPLICATIONS,
DEVICES AND USERS OF
TODAY.

14. Rest lifecycle
API AS PRODUCT
Design
Develop
Measure
api/v1
api/v[infinity]

15. Architecture Model

16. HTTP VERBS AND ENDPOINTS

17. Which kind of problems
we have in rest api’s?

18. 1° Versioning

19. 1° versioning

21. 2° multiples endpoints

22. Example

23. 3° the endpoints show
more than necessary data

24. 4° rest is schemaless

26. Is Graphql The savior of
the motherland?

27. no, But it can help you
improve your api!

28. Why Graphql?

29. GRAPHQL concepts

30. 1° SINGLE
ENDPOINT

31. 2° It works with
schemas :D

32. 3° no more
OVERFETCHING

33. 4° no more
UNDERFETCHING

35. The architecture

36. query
It expect to get information
Mutation
It expect to make changes
Subscription
Websocket to real time
changes

37. Getting started
A simple example of fetch
{
myShop {
name
location {
city
address
}
products(orderby: POPULARITY) {
name
price
}
}

38. The result
One endpoint | One fetch
{
"myShop": {
"name": "Full Stack Fest Shop",
"location": {
"city": "Barcelona",
"address": "Av. Diagonal 547"
},
"products": [
{
"name": "Conferece Ticket",
"price": 5000.99
},
{
"name": "Cool T-Shirt",
"price": 2000.10
}
]
}

39. And about the documentation?

40. Did you remember
about the stronger
typed?

41. Live code...

42. So….

43. Which one do you prefer?