日本開發者大會短講分享
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This document proposes building a LINE app that provides a customized interface for the LINE TODAY news service using web views. It discusses three versions of the app with increasing features: v1.0 uses customized web views for all pages except onboarding and login. v2.0 adds easier navigation with a bottom navigation bar. v3.0 enhances video with native video pages and a player. The document also discusses using Apache Kafka to build secondary indices for the app's database to enable features like retrieving a user's past posts.
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日本開發者大會短講分享
- 2. Build an App based on existing Web Service Take LINE TODAY as Example
- 3. TOO MANY FEATURES TOO LESS TIME
- 4. Hong KongTaiwanThailandIndonesia Popular news service in several countries and regions LINE TODAY SERVICE
- 5. Movie InfoDramasWebtoonCareer Info Becomes content portal in LINE app LINE TODAY SERVICE
- 6. HOW TO CREATE AN APP FOR IT?
- 7. Find Pain Points Fix it IterateRelease Fast PROPOSED APPROACH Step 1 Step 2 Step 3 Step 2
- 8. Article pageTop pageLINE loginIntroduction All WebViews except onboarding & native LINE login v1.0 - Complete Features
- 9. v1.0 - Architecture CUSTOMIZED WEBVIEW Introduction LINE LoginIntroduction LINE Login CUSTOMIZED WEBVIEW
- 10. User Profile page Video category User generated content Top page Implemented BottomNavigationBar v2.0 - Easier Navigation
- 11. v2.0 - Architecture CUSTOMIZED WEBVIEW Introduction LINE Login BottomNavigation CUSTOMIZED WEBVIEW
- 12. Video PlayerVideo ArticleVideo Category Native Video Category and Video Article page v3.0 - Video Enhancement i
- 13. v3.0 - Architecture BottomNavigation LINE LOGIN INTRODUCTION VIDEO ARTICLE VIDEO PLAYER ROFILECUSTOMIZED WEBVIEW VIDEO CATEGORY
- 14. Find Pain Points IterateRelease Fast SUMMARY Step 1 Step 2 Step 3
- 15. THANK YOU
- 17. Build Secondary Indices In Distributed Database by Exploiting Apache Kafka
- 18. INTRODUCE LINE TODAY AND BUZZ
- 19. LINE TODAY A content portal currently supporting TW/ TH/ ID/ HK BUZZ An new feature released in ID, which allows users to post any fun images or videos
- 20. LINE TODAY Buzz Profile page in Buzz
- 21. HBASE AS DATABASE Key-value pair, column-oriented database High scalability High write throughput
- 22. WHAT WE MEET WITH HBASE
- 23. INDEX IS ONLY BASED ON ROWKEYS Lexicographically sorted by rowKey NO TRANSACTION Inter-row operations are not atomic
- 24. WHY WE NEED SECONDARY INDICESIndex is only based on rowKey
- 25. Get post(s) by ID(s) rowKey (postID) Column Family title author … … 0 userA 1 userB 2 userA … Buzz post page
- 26. (Author - Full table scan) rowKey (postID) Column Family title author … … 0 userA 1 userB 2 userA … User profile page List posts that the user posted before
- 27. Post table rowKey (postID) Column Family title author … … 0 userA 1 userB 2 userA … rowKey (user_postID) Column Family … userA_0 userA_2 userB_1 … Secondary Table ROWKEY IS INDEXED AND SORTED rowKey with prefix userA
- 28. WHY WE USE KAFKA No transaction
- 29. BUILD SECONDARY INDICES BY KAFKA rowKey (postID) Column Family title author … 0 userA 1 userB 2 userA rowKey (user_postID) Column Family … userA_0 userA_2 userB_1 2 1 0 consumer.poll() Update secondary table Apache Kafka User A creates a post (id=2)
- 30. ● Call commit only when all messages are processed successfully ● Duplicate messages might be possible CONTROL CONSUMER’S OFFSET COMMIT
- 31. THANK YOU
- 33. Rapid Development of Wow Beacon LBS with LINE
- 34. LINE TODAY TAIWAN 18,000,000 MAU
- 35. WHAT LINE BEACON CAN DO? WITH TAIPEI METRO’S 2,000,000 DAILY TRAFFIC
- 36. Major Stations In Blue-Line 200+Beacons at platform & exits 35 TAIPEI METRO 100%
- 37. APPLICATIONS Taipei Metro x LINE TODAY
- 38. ENRICH YOUR 50 MINS COMMUTE TIME NEWS DIGEST
- 39. GIVE YOU WHAT’S NEAR YOU COUPON
- 40. MAKE THE CITY YOUR PLAYGROUND PUZZLE GAME
- 41. MAKE YOUR TRANSFER SEAMLESS BUS INFO
- 42. IMPLEMENTATION Taipei Metro x LINE TODAY
- 43. ARCHITECTURE LINE Platform BOT server Web server API server Sticker Giftshop TODAY ServerUser BeaconEvent (enter/stay/leave) Postback/ Text REST API BOT Gift Coupon • News (ImageMap) Coupon • Puzzle(Carousel) Bus (Flex) CMSDB • ProcessBeacon • UpdateAgreement • ClaimCoupon • PuzzleStatus • BeaconTriggerInfo Publish Content Generation & Management Misson Sticker Beacon OA LIFF/C WA
- 44. HOW TO MANAGE 200+ BEACONS
- 45. BEACON MANAGEMENT Beacon HWID → Beacon Group → Action Type HIERARCHICAL MANAGEMENT Platform Group1 Exit B Group2 Group3 Group4 Coupons B B B B BBBB Coupon TypeNews Type
- 46. 2,028,963 HOW TO HANDLE LARGE AMOUNT OF BEACON EVENTS?
- 47. Zookeeper Key = User ID + Action Type CONCURRENT BEACON EVENTS HANDLING EVENT HANDLING Server B B B B
- 48. Independent data entry in DB / cache • Agreement status • Last action info of each action type • Last triggered beacon group EVENT PROCESSING SPEEDUP Y DB / cache Should send coupon/puzzle Y N Y Y Should resend user consent Send user consent Send available coupon/puzzle ZooKeeper Lock Acquire User Agreed {hwid, userid} Beacon EVENT HANDLING
- 49. THANK YOU