Optimistic models

How to start using optimistic models and not breaking the appilcation

1. Optimistic Approach How to show results instead spinners without breaking your Application by Paul Taykalo, Stanfy Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 1
2. Optimistic Approach What is it about? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 2
3. Optimistic Approach 4 Speeding up application 4 "Speeding" up application 4 Making user happier 4 It's all about user-friendliness Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 3
4. How mobile application works Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 4
5. How mobile application works 4 Handle user action 4 Send request to the server 4 Get response from the server 4 Update UI Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 5
6. Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 6
7. User need to wait Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 7
8. User need to wait But user don't like to wait Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 8
9. User need to wait But user don't like to wait User don't have time to wait Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 9
10. Loading next slide Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 10
11. Solutions? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 11
12. Solutions - Making app faster 4 Decrease sizes 4 Compression 4 Opened connection to the server Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 12
13. Solutions - One step ahead 4 Caching 4 Preload pages 4 Load content in the backround 4 Be prepared Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 13
14. Solutions - Entertain user Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 14
15. Solutions - Entertain the user 4 Animations 4 Push/Pop 4 Spinner 4 Progress 4 Skeleton 4 Partial info Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 15
16. Solutions - Predict the result 4 Precalculate result 4 Show it to user 4 ???? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 16
17. Solutions - Predict the result 4 Precalculate result 4 Show it to user 4 Pray :) Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 17
18. Types of user interactions Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 18
19. Actions and Expectations Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 19
20. Actions and Expectations 4 If I press like I expect that 4 If I edit post I expect that 4 If I follow this guy I expect that 4 If I open a post I expect that 4 If I ask for a radom number I expect that Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 20
21. Predictabe vs *elbatciderpnU_ Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 21
22. Predictable Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 22
23. Predictable If I can predict the result, why should I wait for confirmation? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 23
24. Optimistic models Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 24
25. Non optimistic model Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 25
26. Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 26
27. Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 27
28. Following a person [self.requestManager follow:original result:^(Person *res, NSError *err) { if (err) { // Handling error resultBlock(nik, err); } else { // Updating to the new value resultBlock(res, nil); } }]; Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 28
29. Following a person // Saving original for later usage Person *original = self.person; // Create fake result Person *fake = [self.person copy]; fake.followingStatus = @"Following"; // Updating current object self.person = fake; resultBlock(fake, nil); Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 29
30. Following a person if (error) { // rollback weakSelf.person = original; resultBlock(original, error); } else { // Updating to the new value weakSelf.person = updatedPerson; resultBlock(updatedPerson, nil); } Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 30
31. Following a person // Following a person - (void)follow:(void (^)(Person *person, NSError *error))resultBlock { __weak __typeof(self) weakSelf = self; // Saving original for later usage Person *original = self.person; // Create fake result Person *fake = [self.person copy]; fake.followingStatus = @"Following"; // Updating current object self.person = fake; resultBlock(fake, nil); // Calling request manager [self.requestManager followPerson:original result:^(Person *updatedPerson, NSError *error) { if (error) { // rollback weakSelf.person = original; resultBlock(original, error); } else { // Updating to the new value weakSelf.person = updatedPerson; resultBlock(updatedPerson, nil); } }]; } Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 31
32. What about non-breaking? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 32
33. Correct View Layer MVVM* Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 33
34. Correct View Layer Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 34
35. Correct View Layer Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 35
36. Hiperactive User? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 36
37. Hiperactive User? like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike like unlike Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 37
38. State based on multiple updates Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 38
39. State based on multiple updates Take a look at Parse SDK PFObjectEstimatedData.h Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 39
40. Demo? Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 40
41. Recap Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 41
42. Recap 4 It's pretty easy to trick user 4 Show user what he expect 4 Fight for your users, they deserve it 4 Now you can write even cooler apps :) Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 42
43. Last slide :) Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 43
44. Optimistic Approach How to show results instead spinners without breaking your Application by Paul Taykalo, Stanfy Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 44
45. Links 4 http://www.reactnative.com/ 4 https://speakerdeck.com/frantic/react-native- under-the-hood 4 https://medium.com/stanfy-engineering-practices/ do-not-let-your-user-see-spinners-35b824c3ce2f 4 ComponentKit Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 45
46. Paul Taykalo, Optimistic Approach : How to show results instead spinners without breaking your Application, Stanfy, 2015 46