Mobile Apps That Work Offline-Online

Transcript

1. Damba - @Putrabangga Mobile Engineer Mobile Apps That Work Offline-Online
2. Our Challenge: Indonesia Internet Coverage
3. Our Challenge: Indonesia Internet Coverage
4. Our Challenge: Indonesia Internet Coverage TELKOMSEL
5. Problem!
6. We live in a disconnected & battery powered world, but our technology and best practices are a leftover from the always connected & steadily powered past. http://offlinefirst.org/
7. Offline First! an approach to software development in which developers build an application’s core features to function with or without an internet connection. With an offline first approach, data is written locally on the end user’s device and periodically uploaded and replicated in the cloud.
8. But How?
9. Our Strength! • Local Storage • Internet Provider • No need Cloud Validation Exc. Login
10. Our Old Tech Stack • Java Android • Sqlite • Volley • Boilerplate Code
11. Research Time! • Realm? • Firebase? • Yigit Job Queue + Our Craft :) • Retrofit • MVP-Clean
12. Current Architecture
13. Yigit Job Queue • Free! • API < 21 • Easy to customize https://github.com/yigit/android-priority-jobqueue
14. Yigit Configuration .minConsumerCount(1)//always keep at least one consumer alive .maxConsumerCount(3)//up to 3 consumers at a time .loadFactor(3)//3 jobs per consumer .consumerKeepAlive(120) .networkUtil(new NetworkUtilImpl(this));//wait 2 minute
15. Job Method
16. Create • Presenter -> Create Local -> STATE_NOT_SYNC, ID_REMOTE=0 -> Done • Run Job -> High Priority, group By • When Internet Found • Create Remote • Update id_remote & STATE_SYNC
17. Update • Presenter -> Update Local -> Done • Run Job -> High Priority, group By • When Internet Found • Get Local • Update Remote • Update id_remote & STATE_SYNC
18. Delete • Presenter -> Delete Local -> Done • Run Job -> Mid Priority, group By • When Internet Found • Get Local • Delete Remote • Update id_remote=0 & STATE_SYNC
19. Read • Presenter -> Get Local -> View • Run Job -> Mid Priority, group By, singleInstance • When Internet Found • Get Local • Get Remote • Delete Local Data -> Local.isSync() & Local.notFound(remote) • Create Remote Data -> Local.isAllSync() & remote.notFound(local) • Get Local
20. Cloud Merge!
21. Cloud Merge TIMESTAMP
22. So What The Result After New Stack? • User So Happy -> Not Blocking Anymore • Apps Run Smooth •
23. Our Next Challenge • Offline Design • UUID • TimeStamp • Conflict Data • Storage • Memory • https://github.com/evernote/android-job
24. QUESTIONS?
25. More Advance IoT Project just join us career@efishery.com Subject: [firmware|software|android|data] engineer