1. The document discusses Armeria, an asynchronous RPC/API library built on Java, Netty, HTTP/2 and Thrift. It provides benefits like a production-ready RPC layer and fitting well with concurrent systems. 2. Examples are provided of using Armeria for Thrift and HTTP servers and clients. Metrics logging and Zipkin integration are also discussed. 3. The document recommends Armeria for its abstracted coding patterns and "decorator" support which provides out-of-box functionality like metrics, logging and tracing.

2. 1 Introductions
LINE Shop & Armeria
2 Benefits of Armeria
3 How to use Armeria

3. What is LINE Shop?

4. What is Armeria?
・http://line.github.io/armeria/
・Asynchronous RPC/API client/server library built on top of
・Java 8, Netty 4.1, HTTP/2, and Thrift

5. Name of Armeria

6. Shop Architecture
Thrift
Proxy
Talk-server
Shop-server Search FE Elasticsearch
Thriftweb
Thrift
DB
Thrift
REST

7. Shop Architecture
Thrift
Proxy
Talk-server
Shop-server Search FE Elasticsearch
Thrift
REST
Thriftweb
Thrift
Armeria Servers & Clients
DB

8. Shop Architecture
Thrift
Proxy
Talk-server
Shop-server Search FE Elasticsearch
Thrift
REST
Thriftweb
Thrift
Armeria Servers & Clients
DB
Client in talk-server

10. Explore the Armeria World
Benefits of Armeria
・Production-Ready RPC layer
・Affinity with concurrent system
・Easy HTTP/2
Examples with
code snippets

11. Production-Ready RPC layer
Concurrent system Fits
for the service processing
・many many
・independent
・user requests
・with low latency!
i.e. most user-facing
mobile services
・Like :)

12. # of requests processed

13. # of requests processed
Let's go deeper.

14. # of backend requests

15. # of backend requests

16. # of backend requests

17. # of backend requests

18. Go Deeper
Many User Requests
・Which requires multiple backend requests
・ concurrently...
⇒ Many server-to-server requests and resource
consumption!?
⇒ Yes and No!

19. HTTP/2 !
Multiplexed requests & responses in 1 connection!

20. Just one connection

21. Reduced Listen Drops

22. Benefits of Armeria
Armeria fits really well for our use case
・Concurrent system
・Connection management with HTTP/2
・Easy to integrate with monitoring

23. Some pitfalls too

24. How to use Armeria
Code snippets
・Thrift
・HTTP
More Practices
・How we log the metrics and
implement Zipkin integration.

25. Server: Thrift

26. Client: Thrift

27. Server&Client: HTTP

28. Metrics Logging &
Zipkin Integration

29. Real Code Examples

30. Armeria from User point-of-view
Well-abstracted coding patterns
Useful “decorator” support
・Coming with metrics, logging, tracing, …

31. And More Armeria!
Automated Document generator
・http://line.github.io/armeria/server-basics.html#adding-a-documentation-service
Circuit Breaker
・http://developers.linecorp.com/blog/ja/?p=3684
Client-side Load Balancing
・https://github.com/line/armeria/issues/87

32. And More Armeria! (2)
gRPC support
・https://github.com/line/armeria/pull/247

33. Code
Examples are available in
https://github.com/haruki-sugarsun/armeria_test

34. Special Thanks
Armeria Authors
・Trustin Lee
・http://linedevday.linecorp.com/kr/2015/en/#t1s6
・https://github.com/line/armeria/graphs/contributors
Teammates :)

35. Teammates

36. Summary
1
Armeria in Production
・Benefits of HTTP/2
2
Armeria use cases
& examples

37. Q&A