LINE DEVELOPER DAY 2017 C-18

2. Update of LINE LIVE
over the past year
LIVE Team Yappo

3. Last year

4. Server Version: 2.6.100 to 3.2.x
Service Country: +1
New Components: 3+
New Major Features: LINE, AD,
PC(HTML5 Player, Broadcasting)
Twitter Login
And more more updates…
Updates

5. - Ranking System
- PC Broadcasting
- RabbitMQ
- In LINE app
- Service Metrics
- VisualVM
- SSL
Agenda

6. Ranking System
https://www.slideshare.net/kazuhiroosawa/ranking-system-by-elasticsearch

7. Structure summary
Elasticsearch
MySQL
Redis
Worker
Indexer
Ranking
Generator
API
Show
Ranking
Broadcast
New broadcast
Get cache
Fetch new data
Load data
Search
Set cache

8. Aggregations Parent-Child
Mapping
Search Template
We use

9. PC Broadcasting
https://engineering.linecorp.com/ja/blog/detail/164

10. RabbitMQ
DataLabs
Notification BOT
RabbitMQ
Sender
One of use case is the Notification recommendation BOT
Import Batch
LIVE API
LINE
Messaging API
Get meta data
Download data
Send message
Enqueue Dequeue
Python pika Java Spring

11. LIVE Viewer in LINE talk room
High traffic more than LINE LIVE app
Take care of two applications by the server
LINE 7.10.0
Server Version 3.0.0

12. High traffic

13. Two applications
LIVE Servers
LINE
LIVE Player Module
LIVE
Video Player Function

14. Service metrics
LIVE app LIVE API
Message
Norikra Prometheus
Exporter
Prometheus
Grafana
Node.js
LINE app
LINE Notify
Fluentd
Fetch results
Pull metrics
Query
Screen capture
by headless browser

15. Issue
detect
VisualVM

16. CPU Sampling
VisualVM

17. Fixed!
VisualVM

18. SSL
TBD

19. - We had many updates
- We got big traffics
Summary

20. - We had many updates
- We got big traffics
- We want co-workers
Summary

21. Thank you