20180329 Serverless event NOTE

April 21, 2018 David

Serverless for Monitoring

how to debug on serverless ?
how’s the security for using serverless ?
hoe’s the latency ?
how’s the cost ?

“Less is More”
we have to focus on other things not just only code when using serverless

Structure is Changing

During the application structure is changing to CaaS, we have to reduce the instances which are not for application layer as possible as we can, to avoid launching more and more instances which unnecessary to save cost.
“Switching those instances to serverless is a good solution”

What is Serverless

Event driven
No needs to hosting infrasturature by ourself
High Reliable (hosting by third party)
Launch by crontab not always online
But not all of services suit serverless

What is the benefit for using Serverless

Enchance effectivence
No needs to manage instances including scaling
Cost down (if you use it on correct way)
Micro services

What is the shortcomings for using Serverless

Lang (Node.js/Python/Go/C#….. but no Ruby!!)
How to test, debug and collect log ?
How to monitor your Lambda monitoring functions ?
How to CI/CD and version control ?
Should not launch for long time
Depends on third party services (e.g. It’s too difficult from using AWS Lambda to Azure Functions)
Performance (high cold start time)

“You buy a car just like using EC2, rent a car just like using Lambda”

When should we using Serverless

lower requests count
high networking traffic but in very short time (In EC2 case, we need to scale out first or auto scaling, but auto scaling is not fast at all to againest short time traffic)

-> Push notification to user
-> IoT
-> Data Analyze
-> Chatbot
-> Monitoring