The document discusses using Golang for serverless applications. It introduces serverless computing and why Golang is a good choice. Benefits of Golang include its simplicity with only requiring a single binary output and no dependencies. The document demonstrates building a serverless REST API with Golang and AWS Lambda, and addresses enhancing Lambda with provisioned concurrency. It concludes with references for further information.

1. Start serverless
with Golang
Danggeun Market, SEP 26 2019
Byun Kyuhyun
Danggeun Market
Software engineer

2. Introduction
- Danggeun Market Software engineer
- AWSKRUG Serverless Group Organizer
- CircleCI User Group Organizer
- Node.js, AWS, DevOps, Serverless
- Golang, Typescript, Javascript, French
- https://novemberde.github.io
- https://github.com/novemberde

3. Introduction 01
Serverless
Why golang
Benefits
Demo
References
02
03
04
05
06

4. Serverless

5. Serverless
● Eliminates the need to manage application servers
● Focus on business logic
● No worries about infrastructure growth
● Little time to set up or optimize servers
● Very little charge for services used during the
development period(Based on AWS Lambda)
● Easy to integrate with other services
● No need to access server
● Accelerate development

6. Serverless - Problems
● Require POC for the migration to serverless architecture
● Require understanding Cloud Provider services
(AWS - Lambda, Azure - Function, GCP - Function)
● Require knowing Debugging tools
● Could be more expensive than EC2

7. Serverless - AWS Lambda
● Supports all of languages and runtimes
(Golang, Node.js, Python, .Net core, Java ...)
● Logging & Monitoring through CloudWatch
● Easy to bind with API Gateway & Application Load Balancer
● Support Websocket and REST API in API Gateway
● No concerns of scale-out
● Enable processing & caching on CloudFront

8. Serverless - Serverless Framework
● Easy and Simple code to deploy serverless infrastructure
● Supports language templates
● Biggest community in Serverless
● Supports 8 cloud providers
(AWS, GCP, Azure, Kubeless, Spotinst, Cloudflare, Alibaba
Cloud, Openwhisk)
● Support SODD(Stack Overflow driven development)

9. Why Golang?

10. {
Why Golang?
Easy
No dependencies
No node_modules
No requirements.txt
No os dependencies
No build issues
No performance issues
01. BACKGROUND

11. {
Why Golang?
Simple
Only one binary output
Usage
01. BACKGROUND

12. Benefits

13. Golang
Benefits
.
├── README.md
└── bin
└── rest
Node.js
.
├── README.md
├── app.js
├── handler.js
├── package-lock.json
├── package.json
├── routes
│ └── todo.js
├── serverless.yml
├── spec
│ └── todo.spec.js
├── node_modules
│ └── ...
├── template.yaml
└── test
└── handler.js

14. Demo

15. Enhancement of
AWS Lambda

16. Resolved the cold start issue of AWS Lambda
● Added provisioned concurrency
https://aws.amazon.com/ko/about-aws/whats-new/2019/12/aws-lambda-a
nnounces-provisioned-concurrency/
● Improved VPC networking
https://aws.amazon.com/ko/blogs/compute/announcing-improved-vpc-net
working-for-aws-lambda-functions/

17. Disable provisioned concurrency

18. Enable provisioned concurrency

19. References
● https://github.com/awslabs/aws-lambda-go-api-proxy
● https://echo.labstack.com/guide
● https://serverless.com/
● https://github.com/novemberde/go-serverless-demo
● https://novemberde.github.io/ppts/svelte/
● https://github.com/spf13/cobra

20. We’re hiring!!
bit.ly/dangguen

21. Thank you :)
Email: novemberde1@gmail.com
Blog: https://novemberde.github.io
Github:https://github.com/novemberde