Lambda vs ECS

lambda-vs-ecs.md

Lambda vs ECS

Lambda

Steps

• Develop Code
• Publish Lambda, code lives in S3

Limits

1000 concurrent req limit 15 min run time

Cold Start 1ms - 10s ( 30s max )

• Lambda Invoked for the first time ( not hot )
• Download from S3
• Copy code from S3 into Language (node 10, 12, 14, Python, C++, Java, Go, Ruby ) Docker container

Invocation

• node ./code/thingYouDontSee.js
• ..............................
• $
• return handler(event, context, callback)
• $
• .......................
• $
• return handler(event, context, callback)
• $
• .........................
• 5 min has elapsed
• If !reservedConcurrency -> Container kill.

Fargate

• Develop code
• Push whole container into ECR ( registry )
• Push container into the task

Limit

• Throttled 10 invocations/s

Cold Start - 20-30s

• Task Executed
• Container ready to be executed

Invocation

No time limit Writable file system

• $$
• Run code in container
• Exit
• $$