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์ •๊ฒฝ์„
Going asynchronous
with Netty
์—์–ด๋ผ์ด๋ธŒ์ฝ”๋ฆฌ์•„ โ€“ ์ธํ”„๋ผํŒ€
2015.10.27
๋ฐœํ‘œ์ž ์†Œ๊ฐœ
โ— ์ •๊ฒฝ์„
โ— 20์„ธ๊ธฐ์™€ 21์„ธ๊ธฐ๋ฅผ ๋‘˜ ๋‹ค ๊ฒช์€ ์˜ค๋ž˜๋œ(?) ๋ฐฑ์—”๋“œ ๊ฐœ๋ฐœ์ž
โ— MS ASP๋ฅผ ์‹œ์ž‘์œผ๋กœ ๊ฐœ๋ฐœ์ž์˜ ๊ธธ๋กœ
โ— ํ˜„์žฌ AireLive ๋ฉ”์‹œ์ง• API์™€ ์˜์ƒ ๊ฒ€์ƒ‰ ์„œ๋น„์Šค ๊ฐœ๋ฐœ
๋ชฉ์ฐจ
โ— ๋„คํ‹ฐ๋ž€?
โ— ๋„คํ‹ฐ๋Š” ์–ด๋–ป๊ฒŒ ๊ตฌ์„ฑ๋˜๋Š”๊ฐ€?
โ— ๋„คํ‹ฐ์˜ ์ฃผ์š” ์ปดํฌ๋„ŒํŠธ
โ— ์ด๋ฒคํŠธ๋ชจ๋ธ๊ณผ ์ด๋ฒคํŠธ๋ฃจํ”„
โ— ๋„คํ‹ฐ์˜ ๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ๋ฐฉ๋ฒ•
โ— ๋„คํ‹ฐ์˜ ์‚ฌ์šฉ์ฒ˜
๋„คํ‹ฐ๋ž€?
โ— Java ๋„คํŠธ์›Œํฌ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ ํ”„๋ ˆ์ž„์›Œํฌ
โ— ์ด๋ฒคํŠธ ๊ธฐ๋ฐ˜ ๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ
โ— ์‰ฝ๊ณ  ๋น ๋ฅธ ๋„คํŠธ์›Œํฌ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ ์ž‘์„ฑ
โ— IO API ์ถ”์ƒํ™”
โ— ์• ํ”Œ, ํŠธ์œ„ํ„ฐ, ํŽ˜์ด์Šค๋ถ ๋“ฑ์—์„œ ์‚ฌ์šฉ์ค‘
โ— ํ˜„์žฌ ์•ˆ์ •ํ™” ๋ฒ„์ „ 3.10.5.Final, 4.0.32.Final, 5.0.0-Alpha2
๋„คํ‹ฐ๋Š” ์–ด๋–ป๊ฒŒ ๊ตฌ์„ฑ๋˜๋Š”๊ฐ€?
๊ฐœ๋ฐœ์ž๊ฐ€ ์•Œ์•„์•ผ ํ•  ๊ตฌ์„ฑ
๋ถ€ํŠธ์ŠคํŠธ๋žฉ
์ฑ„๋„ ํŒŒ์ดํ”„๋ผ์ธ
์ฝ”๋ฑ์ฝ”๋ฑ
์ด๋ฒคํŠธ ๋ฃจํ”„
์ฝ”๋ฑ
๋ถ€ํŠธ์ŠคํŠธ๋žฉ์ด๋ž€
๋ถ€ํŠธ์ŠคํŠธ๋žฉ
์ „์†ก๊ณ„์ธต
์ด๋ฒคํŠธ ๋ฃจํ”„
์†Œ์ผ“ ์˜ต์…˜
์†Œ์ผ“ ์ฃผ์†Œ
์ฑ„๋„ ํŒŒ์ดํ”„๋ผ์ธ
์ฝ”๋“œ
์ฝ”๋“œ
์ฑ„๋„ ํŒŒ์ดํ”„๋ผ์ธ
โ— ์ฑ„๋„์—์„œ ๋ฐœ์ƒํ•œ ์ด๋ฒคํŠธ๊ฐ€ ์ด๋™ํ•˜๋Š” ํ†ต๋กœ
์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ ์ฝ”๋“œ
์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ
์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ ์ฝ”๋“œ
์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ
์ด๋ฒคํŠธ์ด๋ฒคํŠธ์ด๋ฒคํŠธ
์ฝ”๋ฑ
โ— ์ธ์ฝ”๋”์™€ ๋””์ฝ”๋”์˜ ํ•ฉ์„ฑ์–ด
์˜์ƒ ์ธ์ฝ”๋”ฉ MP4
์••์ถ•
MPEG4 ์ฝ”๋ฑ
๋””์ฝ”๋”ฉ ์˜์ƒ
๋ณต์›
MPEG4 ์ฝ”๋ฑ
์ฝ”๋ฑ
โ— ์†Œ์ผ“ ์ฑ„๋„์„ ๊ธฐ์ค€์œผ๋กœ ์ธ์ฝ”๋”ฉ๊ณผ ๋””์ฝ”๋”ฉ์ด ์ด๋ฃจ์–ด์ง
๋ฐ์ดํ„ฐ ์ธ์ฝ”๋”ฉ ๋””์ฝ”๋”ฉํŒจํ‚ท ๋ฐ์ดํ„ฐ
๋กœ์ง์ฒ˜๋ฆฌ ํ›„ ํŒจํ‚ท ๋ณ€ํ™˜
์ธ์ฝ”๋”
๋ฐ์ดํ„ฐ ๋ณ€ํ™˜ ํ›„ ๋กœ์ง์ฒ˜๋ฆฌ
๋””์ฝ”๋”
์ฝ”๋ฑ
โ— ์ธ๋ฐ”์šด๋“œ์™€ ์•„์›ƒ๋ฐ”์šด๋“œ
ํด๋ผ์ด์–ธํŠธ ์„œ๋ฒ„
์†Œ์ผ“ ์„œ๋ฒ„์†Œ์ผ“
Outbound
์ง€๊ธˆ 10์‹œ์•ผ!
์ง€๊ธˆ ๋ช‡ ์‹œ๋‹ˆ?
Outbound
Inbound
Inbound
์‚ฌ์šฉ์ž ์ •์˜ ์ฝ”๋ฑ ์ž‘์„ฑ
โ— ChannelInboundHandler, ChannelOutboundHandler
์ธ์ฝ”๋”
ChannelOutboundHandler
๋””์ฝ”๋”
ChannelInboundHandler
โ— channelActive
โ— channelInactive
โ— channelRead
โ— channelReadComplete
โ— channelRegistered
โ€ฆ
โ— bind
โ— close
โ— connect
โ— deregister
โ— disconnect
โ€ฆ
์ฝ”๋ฑ
โ— ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์˜ ๋กœ์ง = ์ฝ”๋ฑ
โ— ๋„คํ‹ฐ์˜ ๊ธฐ๋ณธ ์ œ๊ณต ์ฝ”๋ฑ ๋ชฉ๋ก
zlib, gzip, Snappy
์••์ถ• ์ฝ”๋ฑ
websocket, CORS
HTTP ์ฝ”๋ฑ
Marshaller,
Unmarshaller
marshalling ์ฝ”๋ฑ
TLS, SPDY
spdy ์ฝ”๋ฑ
base64
BASE64 ์ฝ”๋ฑ
RxtxChannel
rxtx ์ฝ”๋ฑ
MqttDecoder,
MqttEncoder
mqtt ์ฝ”๋ฑ
ProtobufDecoder,
ProtobufEncoder
protobuf ์ฝ”๋ฑ
๋“ฑ๋“ฑ ์ˆ˜ ๋งŽ์€ ์ฝ”๋ฑ
๋„คํ‹ฐ์˜ ์ด๋ฒคํŠธ
โ— ๋„คํ‹ฐ์˜ ์ด๋ฒคํŠธ๋Š” ๋น„๋™๊ธฐ๋กœ ์ฒ˜๋ฆฌ๋จ
โ— ํ•„์š”์— ๋”ฐ๋ผ์„œ ๋™๊ธฐ๋กœ ์ฒ˜๋ฆฌํ•  ์ˆ˜ ์žˆ์Œ
โ— ์ด๋ฒคํŠธ๋Š” ๋ชจ๋‘ ์ด๋ฒคํŠธ ๋ฃจํ”„์—์„œ ์ˆ˜ํ–‰๋จ
โ— ๋„คํ‹ฐ๋Š” ๋‹จ์ผ ์ด๋ฒคํŠธ ๋ฃจํ”„, ๋‹ค์ค‘ ์ด๋ฒคํŠธ ๋ฃจํ”„๋ฅผ ์ œ๊ณต
โ— ๋„คํ‹ฐ์˜ ์ด๋ฒคํŠธ๋Š” ๋ฐœ์ƒ์ˆœ์„œ์™€ ์‹คํ–‰ ์ˆœ์„œ๊ฐ€ ํ•ญ์ƒ ์ผ์น˜
์ด๋ฒคํŠธ๋ฃจํ”„
๊ฐ์ฒด
์ด๋ฒคํŠธ ๋ฃจํ”„
์ฝ”๋“œ
โ— ๋‹จ์ผ ์ด๋ฒคํŠธ ๋ฃจํ”„
์ด๋ฒคํŠธ์ด๋ฒคํŠธ ์ด๋ฒคํŠธ
์ด๋ฒคํŠธ์ด๋ฒคํŠธ
์ด๋ฒคํŠธ๋ฃจํ”„
โ— ๋‹ค์ค‘ ์ด๋ฒคํŠธ ๋ฃจํ”„
๊ฐ์ฒด ์ฝ”๋“œ
์ด๋ฒคํŠธ ๋ฃจํ”„ ์ด๋ฒคํŠธ ๋ฃจํ”„โ€ฆ
์ด๋ฒคํŠธ์ด๋ฒคํŠธ ์ด๋ฒคํŠธ
์ด๋ฒคํŠธ์ด๋ฒคํŠธ
์ด๋ฒคํŠธ๋ฃจํ”„
โ— ์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ์ˆœ์„œ
๊ฐ์ฒด
์ด๋ฒคํŠธ ๋ฃจํ”„ ์ด๋ฒคํŠธ ๋ฃจํ”„์ด๋ฒคํŠธ1
์ด๋ฒคํŠธ3
์ด๋ฒคํŠธ5
์ด๋ฒคํŠธ4
์ด๋ฒคํŠธ2
์ด๋ฒคํŠธ๋ฃจํ”„
โ— ๋„คํ‹ฐ์˜ ์ด๋ฒคํŠธ
์ด๋ฒคํŠธ ๋ฃจํ”„ ์ด๋ฒคํŠธ ๋ฃจํ”„
์ฑ„๋„ ์ฑ„๋„
์ด๋ฒคํŠธ3
์ด๋ฒคํŠธ1์ด๋ฒคํŠธ2
์ด๋ฒคํŠธ3
์ด๋ฒคํŠธ1์ด๋ฒคํŠธ2
์„ฑ๋Šฅ ํ–ฅ์ƒ ์ž„๊ณ„์ 
โ— ์•”๋‹ฌ์˜ ๋ฒ•์น™
- ์‹œ์Šคํ…œ์˜ ํŠน์ • ๋ถ€๋ถ„์„ ๊ฐœ์„ ํ–ˆ์„ ๋•Œ ์–ป์„ ์ˆ˜ ์žˆ๋Š” ์„ฑ๋Šฅ ํ–ฅ์ƒ์น˜
1-๋ฒ”์œ„ + ์„ฑ๋Šฅ ํ–ฅ์ƒ๋ฅ 
1
๋ฒ”์œ„
์„ฑ๋Šฅ ํ–ฅ์ƒ ์ž„๊ณ„์ 
โ— ์ฝ”๋“œ์˜ ์ ˆ๋ฐ˜์ด 2๋ฐฐ์˜ ์„ฑ๋Šฅ์„ ๋‚ผ ์ˆ˜ ์žˆ๋„๋ก ํŠœ๋‹ ํ–ˆ์„ ๋•Œ ์–ป์„ ์ˆ˜ ์žˆ๋Š” ์ด๋“
1-0.5 +
2
1
0.5
= 133%
๋„คํ‹ฐ์˜ ๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ
โ— ChannelHandlerContext, ChannelFuture
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
// IO ์ฒ˜๋ฆฌ ๋ฉ”์„œ๋“œ read, write, close, connect โ€ฆ
ChannelFuture future = ctx.write(msg);
// write ๋ฉ”์„œ๋“œ์˜ ์ž‘์—…์ด ์™„๋ฃŒ๋˜์—ˆ์„ ๋•Œ ์ด๋ฒคํŠธ๋ฅผ ๋ฐ›์„ ์ˆ˜ ์žˆ๋Š” ๋ฆฌ์Šค๋„ˆ ์„ค์ •
future.addListener(listener);
// IO ์ž‘์—…์ด ์™„๋ฃŒ๋˜์—ˆ๋Š”์ง€ ํ™•์ธํ•  ์ˆ˜ ์žˆ์Œ.
future.isDone();
// IO ์ž‘์—…์ด ์™„๋ฃŒ๋  ๋•Œ๊นŒ์ง€ ๋Œ€๊ธฐ
future.sync();
}
๋„คํ‹ฐ์˜ ๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ
โ— ChannelFutureListener
๋„คํ‹ฐ๊ฐ€ ์ œ๊ณตํ•˜๋Š” ๊ธฐ๋ณธ ChannelFutureListener
โ— ChannelFutureListener.CLOSE
โ— ChannelFutureListener.CLOSE_ON_FAILURE
โ— ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
ChannelFuture future = ctx.write(msg);
future.addListener(ChannelFutureListener.CLOSE );
}
๋„คํ‹ฐ์˜ ์‚ฌ์šฉ์ฒ˜
โ— Facebook
- Netty-based Thrift transport implementation, Nifty
โ— Apple
- Java service server
โ— AireLive
- TCP based Messaging server, HTTP based API server
โ— ElasticSearch core
- HTTP based API service, Client transport layer
โ— Apache Spark
- Cluster data transfer
โ— Google โ€“ gRPC, Red Hat โ€“ Infinispan, Typesafe - Play Framework
๋งˆ์น˜๋ฉฐ
โ— ๋„คํ‹ฐ 4.0์ด์ƒ๋ถ€ํ„ฐ ์•ˆ๋“œ๋กœ์ด๋“œ๋ฅผ ๊ณต์‹ ์ง€์›
โ— ํ•˜๋‚˜์˜ ๋„คํ‹ฐ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์—์„œ ๋‘ ๊ฐœ์˜ ํฌํŠธ๋ฅผ ๋ฐ”์ธ๋”ฉ
- ๋ถ€ํŠธ์ŠคํŠธ๋žฉ์˜ ๋ฐ”์ธ๋“œ ๋ฉ”์„œ๋“œ๋ฅผ ๋‘ ๋ฒˆ ํ˜ธ์ถœ
โ— ์„ฑ๋Šฅ์€ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์ด ์ œ๊ณตํ•˜๋Š” ๊ธฐ๋Šฅ์— ๋”ฐ๋ผ์„œ ๋‹ฌ๋ผ์ง„๋‹ค.
- ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์กฐํšŒ vs ์บ์‹œ ์กฐํšŒ
โ— ์ด๋ฒคํŠธ ๋ฃจํ”„์˜ ๊ฐœ์ˆ˜๋Š” ํ…Œ์ŠคํŠธ๋ฅผ ํ†ตํ•ด์„œ ์„ ํƒํ•˜๋ผ.
- nGrinder, Jmeter
โ— ๋„คํ‹ฐ์˜ ChannelFuture.sync() ๋ฉ”์„œ๋“œ๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•  ๊ฒƒ.
โ— ๋„คํ‹ฐ์˜ Channel.write() ๋ฉ”์„œ๋“œ๋Š” ๋‚ด๋ถ€์ ์œผ๋กœ requestQueue๋ฅผ ๊ด€๋ฆฌํ•จ.
โ— ์‚ฌ์šฉ์ž ์ •์˜ ์ฝ”๋ฑ์€ EmbeddedChannel ํด๋ž˜์Šค๋ฅผ ํ†ตํ•ด์„œ ํ…Œ์ŠคํŠธ
THANK YOU!

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