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Jinyoung Jang
2020-04-19 12:50:31 +09:00
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@@ -74,10 +74,144 @@ http localhost:8080/주문s 품목=피자 수량=2 주소=서울 #성공
## 운영
### 동기식 호출 / 서킷 브레이킹 / 장애격리
### 동기식 호출 / 서킷 브레이킹 / 장애격``
```
istio
부하테스트를 통한 서킷 브레이커 동작 확인:
- 동시사용자 100명
- 60초 동안 실시
```
$ siege -c100 -t60S -r10 --content-type "application/json" 'http://localhost:8081/orders POST {"item": "chicken"}'
** SIEGE 4.0.5
** Preparing 100 concurrent users for battle.
The server is now under siege...
HTTP/1.1 201 0.68 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.68 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.70 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.70 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.73 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.75 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.77 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.97 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.81 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 0.87 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.12 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.16 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.17 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.26 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.25 secs: 207 bytes ==> POST http://localhost:8081/orders
* 요청이 과도하여 CB를 동작함 요청을 차단
HTTP/1.1 500 1.29 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 1.24 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 1.23 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 1.42 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 2.08 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.29 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 1.24 secs: 248 bytes ==> POST http://localhost:8081/orders
* 요청을 어느정도 돌려보내고나니, 기존에 밀린 일들이 처리되었고, 회로를 닫아 요청을 다시 받기 시작
HTTP/1.1 201 1.46 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.33 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.36 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.63 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.65 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.68 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.69 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.71 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.71 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.74 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.76 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 1.79 secs: 207 bytes ==> POST http://localhost:8081/orders
* 다시 요청이 쌓이기 시작하여 건당 처리시간이 610 밀리를 살짝 넘기기 시작 => 회로 열기 => 요청 실패처리
HTTP/1.1 500 1.93 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 1.92 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 1.93 secs: 248 bytes ==> POST http://localhost:8081/orders
* 생각보다 빨리 상태 호전됨 - (건당 (쓰레드당) 처리시간이 610 밀리 미만으로 회복) => 요청 수락
HTTP/1.1 201 2.24 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.32 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.16 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.19 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.19 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.19 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.21 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.29 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.30 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.38 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.59 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.61 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.62 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 2.64 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.01 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.27 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.33 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.45 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.52 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.57 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.69 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.70 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.69 secs: 207 bytes ==> POST http://localhost:8081/orders
* 이후 이러한 패턴이 계속 반복되면서 시스템은 도미노 현상이나 자원 소모의 폭주 없이 잘 운영됨
HTTP/1.1 500 4.76 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.23 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.76 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.74 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.82 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.82 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.84 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.66 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 5.03 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.22 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.19 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.18 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.69 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.65 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 5.13 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.84 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.25 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.25 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.80 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.87 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.33 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.86 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.96 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.34 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 500 4.04 secs: 248 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.50 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.95 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.54 secs: 207 bytes ==> POST http://localhost:8081/orders
HTTP/1.1 201 4.65 secs: 207 bytes ==> POST http://localhost:8081/orders
:
:
Transactions: 1025 hits
Availability: 63.55 %
Elapsed time: 59.78 secs
Data transferred: 0.34 MB
Response time: 5.60 secs
Transaction rate: 17.15 trans/sec
Throughput: 0.01 MB/sec
Concurrency: 96.02
Successful transactions: 1025
Failed transactions: 588
Longest transaction: 9.20
Shortest transaction: 0.00
```
- 63.55% 가 성공하였고, 운영시스템은 죽지 않고 지속적으로 CB 에 의하여 적절히 회로가 열림과 닫힘이 벌어지면서 자원을 보호하고 있음을 보여줌. 물론, 46% 의 실패율은 좋지 않기 때문에 동적 Scale out (replica의 자동적 추가,HPA) 을 통하여 시스템을 확장 해주는 후속처리가 필요.
### 무정지 재배포
```