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Serverless Applications
Lars Röwekamp | CIO New Technologies | @mobileLarson
open knowledge | #WISSENTEILEN
ÜBER OPEN KNOWLEDGE
Branchenneutrale Softwareentwicklung und IT-Beratung
#WISSENTEILEN
ÜBER MICH
Wer bin ich - und wen ja, wie viele?
• CIO New Technologies
• Enterprise & Mobile
• Autor, Speaker, Coach & Mentor
• Snowboard & MTB Enthusiast
• Mehrfacher Vater, einfacher Ehemann
Lars Röwekamp (a.k.a. @mobileLarson)
#WISSENTEILEN
LR
An Era of „Mindshift“
1 Mio € App(lication)
Time is Money
An Era of „Mindshift“
App Business
Plan ...
#WISSENTEILEN
#Servers?
(OS? Files & Storage? CPU? Memory?)
#WISSENTEILEN
#Customers?
(Start small! Grow fast! Die faster?)
#WISSENTEILEN
#Traffic?
(Moderate but peeks!)
#WISSENTEILEN
#Security?
(OS? Patches? Access Control?)
#WISSENTEILEN
Depends ...!
(Go for max? Way to expensive!)
I had a
dream ...
#WISSENTEILEN
Serverless
„Kein Server ist
einfacher zu
verwalten, als
kein Server.“
(Werner Vogels, CTO Amazon)
Out-of-the-Box self-scaling
Backend
> IaaS
> PaaS
> BaaS
#WISSENTEILEN
Road to less Server
#WISSENTEILEN
IaaS
Road to less Server
#WISSENTEILEN
IaaSPaaS
Road to less Server
#WISSENTEILEN
Road to less Server
IaaSPaaS?
#WISSENTEILEN
Road to less Server
IaaSPaaSBaaS
Ain‘t gonna work!
Ain‘t gonna work!
My Business Logic
My Integration Logic
My Event-based Logic
#WISSENTEILEN
Road to less Server
IaaSPaaSBaaS
#WISSENTEILEN
Road to less Server
#WISSENTEILEN
Road to less Server
#WISSENTEILEN
Road to less Server
#WISSENTEILEN
Road to less Server
#WISSENTEILEN
Fa#!? WTH?
(a.k.a. Serverless)
#WISSENTEILEN
Run Code,
not Server!
#WISSENTEILEN
“Run your code highly-
available in the cloud
in response to events
and scale without any
servers to manage.“
#WISSENTEILEN
Road to less Server
• High Availability
• Zero Administration
• Auto-Scaling
• Your Code
#WISSENTEILEN
Road to less Server
• High Availability
• Zero Administration
• Auto-Scaling
•Your Code
#WISSENTEILEN
Road to less Server
• High Availability
• Zero Administration
• Auto-Scaling
•Your Code
• Sharing Resources
• Security related Issues
• Access to other Resources
#WISSENTEILEN
Serverless
#WISSENTEILEN
Main Player
AWS
Lamdba
Google Cloud
Functions *)
Microsoft
Azure Functions
IBM
OpenWhisk**)
#WISSENTEILEN
The Main Player
AWS Lamdba
(serverless, event-driven compute service)
#WISSENTEILEN
How does it work?
S3 Bucket
DynamoDB
Kinesis
EVENT
EVENT
INVOKE
Stateless Code
(a.k.a. AWS Lambda)
#WISSENTEILEN
How does it work?
S3 Bucket
DynamoDB
Kinesis
INVOKE
INVOKE
RETURN
Stateless Code
(Node, Python, Java, C#)
#WISSENTEILEN
Subscribe to ...
Amazon
S3
Amazon
DynamoDB
Amazon
Kinesis
AWS
CloudFormation
AWS
CloudTrail
Amazon
CloudWatch
Amazon
SNS
Amazon
SES
Amazon
API GatewayAmazon
Cognito
AWS
IoT
Amazon
Alexa
Cron
Events
DATA STORES ENDPOINTS
REPOSITORIES EVENT/MESSAGE SERVICES
Amazon
Config
Anatomy of
a Lambda
Function
#WISSENTEILEN
Anatomy
Lambda
Function
#WISSENTEILEN
Anatomy
Handler Function
Lambda
Function
</>
„...“
Event Object
Context Object
...
{
#WISSENTEILEN
Anatomy
Handler Function
Lambda
Function
</>
„...“
Event Object
Context Object
...
{
#WISSENTEILEN
Anatomy
Handler Function
Lambda
Function
</>
„...“
Event Object
Context Object
...
{
IAM Role
#WISSENTEILEN
Anatomy
Handler Function
Lambda
Function
</>
„...“
Event Object
Context Object
...
{
IAM Role
Return Object*
#WISSENTEILEN
Anatomy
Lambda
Function
1. Number of Calls*
2. Memory Usage**
{
IAM Role
Return Object*
(*first 1 million for free, **first 400.000 sec free for 1 GB memory)
#WISSENTEILEN
Scenarios
(gimme some “Demos“)
#WISSENTEILEN
FaaS Scenarios
• Data & File Processing
• Data and Analytics
• Websites
• Mobile Applications
#WISSENTEILEN
„Hello World“
Thumbnail Creation
(Data & File Processing)
#WISSENTEILEN
„Hello World“
#WISSENTEILEN
„Hello World“
#WISSENTEILEN
„Hello World“ V2.0
Trend & Fault Detection
(Event Streaming)
#WISSENTEILEN
„Hello World“ V2.0
#WISSENTEILEN
„Hello World“ V3.0
Web Application
(Custom Events)
#WISSENTEILEN
„Hello World“ V3.0
#WISSENTEILEN
„Hello World“ V4.0
Resource Optimization
(ELSE-Branch)
if (normalCase) {
runOnMyServer();
} else {
runLambdaInTheCloud();
}
#WISSENTEILEN
Doing it the right Way
AWS Lamdba SDK Amazon API Gateway
vs.
#WISSENTEILEN
Doing it the right Way
• RESTful API Gateway
• Caching via CDN
• DDoS Protection
• Throttling Capabilities
• API Stages
• Decoupling of C/S
Amazon API Gateway
#WISSENTEILEN
Serverless App Architecture
#WISSENTEILEN
Serverless App Architecture
#WISSENTEILEN
Demo
(damn, gimme some REAL Demo!)
#WISSENTEILEN
„Hello REAL World“
#WISSENTEILEN
„Hello REAL World“
#WISSENTEILEN
„Hello REAL World“
#WISSENTEILEN
„Hello REAL World“
#WISSENTEILEN
„Hello REAL World“
#WISSENTEILEN
„Hello REAL World“
#WISSENTEILEN
AWSOME!
(But what‘s about ...?)
#WISSENTEILEN
#Versioning
(Version vs. Alias)
#WISSENTEILEN
#Security
(Push vs. Pull Policy)
#WISSENTEILEN
#Concurrency
(max 200 at once, max 300 sec)
#WISSENTEILEN
#ErrorHandling
(What‘s the Retry Policy?)
#WISSENTEILEN
#Tracing
(Who? When? Where? What?)
#WISSENTEILEN
#Monitoring
(Logs & Metrics)
#WISSENTEILEN
#Testing
(„If i test, i do it in Production!“)
#WISSENTEILEN
#Deployment
(DIY vs. Tooling)
#WISSENTEILEN
#NoOps
(Ok, let‘s call it „LessOps“)
#WISSENTEILEN
#VendorLock
(Adrian said: „2*Vendor << DIY“)
#WISSENTEILEN
#Pricing
(Never pay for idle!)
#WISSENTEILEN
#BestPractices
(Keep calm and ...)
#WISSENTEILEN
#Pitfalls
(cold, warm, hot)
#WISSENTEILEN
Fazit
#WISSENTEILEN
Run Code,
not Server!
#WISSENTEILEN
Don‘t
pay Idle!
1 Mio €
App
Yeah, all Work done!
? ? ?
FRAGEN
#WISSENTEILEN
Kontakt
LARS RÖWEKAMP
CIO NEW TECHNOLOGIES
lars.roewekamp@openknowledge.de
+49 (0)441 4082 – 101
@mobileLarson
@_openknowledge
OFFENKUNDIGGUT
#WISSENTEILEN
Bildnachweise
#12: © RichVintage – istockphoto.com
#14: © Guido van Nispen – Wikipedia
#21: © vasakna – fotolia.com
#40, #88 : © pathdoc - fotolia.com
#85: © tomer_turjeman – fotolia.com
All other pictures inside this presentation orginate from
pixabay.com.
#WISSENTEILEN

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