Originally presented at AWS User Group Bandung, Indonesia. In this session, let's learn how to use AWS Lambda layers and Lambda Runtimes. Including live demo(s) on how to build your own custom runtime and usage of Lambda layers.

1. © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
Donnie Prakoso, MSc
AWS Technology Evangelist, ASEAN
How to Use AWS Lambda Layers
and Lambda Runtime
@donnieprakoso
donnieprakoso

2. © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
> hello, world
Donnie Prakoso, MSc
AWS Technology Evangelist
@donnieprakoso
donnieprakoso
• Speak in Go and Python
• Container, Machine Learning and Serverless
• I AWS User Groups
#TEMENNYAPETRA

3. © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
What we’re going to talk today
• Quick review on serverless
• Previously on AWS Lambda
• Introducing AWS Lambda Layers and Lambda Runtime
• Few ideas on best practices

4. © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
Serverless Means …
No servers to provision
or manage
Scales with usage
Never pay for idle Built in availability and
fault tolerance

5. © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
Services for Building Serverless Applications
AWS Lambda
Amazon DynamoDB
Amazon SNS
Amazon API Gateway
Amazon SQS
Amazon Kinesis
Amazon S3
Compute and API Proxy
AWS X-Ray
AWS Step Functions
Datastores, Storage, Orchestration, Analytics, Interprocess Messaging
Developer Tools
AWS CodeBuild
AWS CodePipeline
AWS Serverless
Application Model (SAM)
Open Source and
third parties
Lambda@Edge
AWS Cloud9
Amazon Aurora
Serverless (preview)
AWS AppSync

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Serverless Applications
Services (anything)
Changes in
data state
Requests to
endpoints
Changes in
resource state
Event source Lambda function
Node.js
Python
Java
C#
Go

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Focus on building business logic.
!

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BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
Previously on AWS Lambda

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How?
• How about common functions?
• How to separate lib, modules, frameworks?
• How to share common libs?

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Extend the Lambda execution
environment with any binaries,
dependencies, or runtimes
Lambda Layers
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
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LIB
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Programming
Model
Before
BUSINESS
LOGIC
BUSINESS
LOGIC
BUSINESS
LOGIC
BUSINESS
LOGIC
LIB
A
LIB
B
After

11. © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
Business Logic{}
CI/CD for App & Dependencies
Streamline Development with AWS Lambda, Layers and Runtime
APP
Sourc
e Build Test
Deplo
y{}
Source Build Test Deploy
Lambda Layer
Lambda Layer
Lambda Layer
Sourc
e Build Test
Deplo
y
Sourc
e Build Test
Deplo
y
{}
{}
LIBRARIES

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Languages
Lambda
support
for Ruby
+ Bring any Linux compatible language
runtime;
Powered by new Runtime API - Codifies
the runtime calling conventions and
integration points
Same technology powering Ruby
support in AWS Lambda
Bring any Linux compatible
language runtime
Custom Runtimes
+
AWSOPENSOURCE
o f f e r e d b y
o f f e r e d b y
o f f e r e d b y
o f f e r e d b y
PARTNERSUPPORTED

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UNDER THE HOOD - How does custom runtimes work?
1 • Retrieve settings
2 • Initialize the function
3 • Handle errors
1 • Get event
2 • Tracing
3 • Handle errors
4 • Invoke function
5 • Response handling
6 • Error handling
7 • Cleanup
Processing TasksInitialization Tasks
bootstrapBuild runtime

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Lambda Runtime API - Runtime Interactions
• POST /runtime/init/error
• GET /runtime/invocation/next
• The invocation-id is in the Lambda-Runtime-Aws-Request-Id header
• For AWS X-Ray there is a tracing header Lambda-Runtime-Trace-Id
• POST /runtime/invocation/{invocation-id}/response
• POST /runtime/invocation/{invocation-id}/error
• Sample Endpoint + Resource Path
• http://${AWS_LAMBDA_RUNTIME_API}/2018-06-
01/runtime/invocation/next

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Image credit to BukaLapak

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Open Source Runtimes
• C++ (AWS)
• Rust (AWS)
• Erlang (AlertLogic)
• Elixir (AlertLogic)
• Cobol (Blu Age)
• Node.js (NodeSource N|Solid)
• PHP (Stackery)

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Wrapping Up
• Experiments!
• Lambda Layers help you to simplify your system by enforcing separation
of concerns. Dependencies or business logic?
• Use existing available Lambda Layer and if it doesn’t suit your needs…
build one!
• Bring your own interpreter for any language of your choice

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Go Build!
Donnie Prakoso
AWS Technology Evangelist, ASEAN
@donnieprakoso
donnieprakoso