1. Sticky Sessions (Session Affinity)๊ณ ์ ์ธ์ ๋๋ ์ธ์ ๋ฐ์ ์ฑIt is possible to implement stickiness so that the same client is alwyas redirected to the same instance behind a load balancerThis works for Classic Load Balancers & Application Load BalancersThe "cookie" used for stickiness has an expiration date you control Use case: make sure the user doesn't lose his session dataEnabling stickiness may bri..
1. Network Load Balancer (v2)Network load balancers (Layer 4) allow to:- Forward TCP & UDP traffic to your instances - Handle millions of request per seconds- Less latency ~100 ms (vs 400 ms for ALB)NLB has one static IP per AZ, and supports assigning Elastic IP(helpful for whitelisting specific IP)NLB are used for extreme performance, TCP or UDP trafficNot included in the AWS free tier์ํ๋ฌธ์ ์ ๊ณ ์ฑ..
1. Application Load Balancer (v2)Application load balancers is Layer 7 (HTTP)Load balancing to multiple HTTP applications across machines (target groups)Load balancing to multiple applications on the same machine (ex: containers)(๋์ผ EC2 ์ธ์คํด์ค ์์ ์ฌ๋ฌ ์ ํ๋ฆฌ์ผ์ด์ ์ ๋ถํ๋ฅผ ๋ถ์ฐํ๋ค)Support for HTTP/2 and WebSocketSupport redirects (from HTTP to HTTPS for exampleALB are a great fit for micro services & container-..
1. Scalability & High AvailabilityScalability(ํ์ฅ์ฑ) means that an application / system can handle greater loads by adapting.There are two kinds of scalability - Vertical Scalability - Horizontal Scalability (=elasticity) ํ๋ ฅ์ฑ, ์ํ ํ์ฅ์ฑScalability is linked but different to High Availability ( ํ์ฅ์ฑ != ๊ณ ๊ฐ์ฉ์ฑ)2. Vertical Scalability - ์์ง ํ์ฅ์ฑVertically scalability means increasing the size of the instanc..
โ ๏ธ ๋ฌธ์ default security groups ๋ง ๋จ๊ธฐ๊ณ ๋ณด์ ๊ทธ๋ฃน์ ์ ๊ฑฐํ๋ ค๊ณ ํ๋๋ฐ, ์๋์ ๊ฐ์ ๋ฉ์ธ์ง๊ฐ ๋จ๋ฉฐ ์ญ์ ๊ฐ ์ ๋๋ ํ์ Some security groups can't be deleted.The following security groups can't be deleted. They are either default security groups, referenced by other security groups, or they are associated with instances or network interfaces. ์ฌ๊ธฐ์ ์ข์ ์ ์ ๊ฐ ๋ณด์๊ทธ๋ฃน ์์ด๋๋ณ๋ก Reason ๋์ ์ญ์ ๋์ง ์๋ ๊ตฌ์ฒด์ ์ธ ์ด์ ๊ฐ ๋์จ๋ค๋ ๊ฒ์ด๋ค.์ธ์คํด์ค์ ์ฐ๊ฒฐ๋ ๊ฒฝ์ฐ, ๋คํธ์ํฌ ์ธํฐํ์ด์ค๋ ์ฐ๊ฒฐ๋ ๊ฒฝ์ฐ..