Service & deployment

1. production service

2. beta service

  - may work, may not work

3. 3rd party service

[Active deploy]

Canary release

- 언제나 롤백이 가능

- minimal risk

Blue Green Deployment

- 소소한 변경만으로도 반영

- green -> blue

- hot-standby <-> cold

- RTO, RPO

- 데이터손실이 0에 수렴

-

Red(active) Black(deactive)

- Netflix 에서 사용중

Blue Green 

and Red(active) Black(deactive)

both are Deployment methodogy to achive active deploy?

In autoscaling perspective, scale out include disk size expanding?

no

1. how to expend disk size

yes

2. when scale out occur, two instance share one db?