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MOBILE APP FOR ACME INC.by Sean Hull - Cloud Solutions Architect - [email protected]
ABOUT SEAN HULL
+1-917-442-3939
iheavy.com/blog
about.me/hullsean
github.com/hullsean
NEWSLETTER - SIGNUP!
iheavy.com/signup
cloud topics
startup focused
innovation inspired!
WHAT DO I DO?
Boutique Professional Services
Advisor, Fractional CTO
10+ years with startups
Devops + Data automation
AWS & GCP Clouds
Terraform + Ansible
Serverless Lambda, Python
MySQL, Postgres, Redshift
–Steve Jobs
“If you play it safe, no onewill ever know who you are.”
SHORT HISTORY OF HOSTING
90’s - on-premise server closet
00’s - managed hosting
10’s - cloud hosting, aws, gcp
Docker containers
Serverless functions
ON-PREMISE HOSTING
full control
need team of hardware experts
need equipment, backups
DATACENTER HOSTING
Professionally managed
Frees you to run your business
Still need operations team
Still slow to provision
CLOUD HOSTING
On-demand compute
Pay for what you use
Stop & save unused servers
Cost by the hour
Need operations team
DOCKER CONTAINERS
Supports microservices
Dockerfile defines server config
Need operations team
SERVERLESS - FUNCTIONS
Worry only about your code
Deploy directly to the cloud
Event-based
No operations team
20TH CENTURY POWER
Nicholas Carr, Edison, Google
Henry Burden -1850 to 1900
Before distributed power grid
Backoffice: waterwheel engineers
Replacement waterwheel parts!
Parallel today’s cloud computing
PRODUCT REQUIREMENTS
Upload images from Web
Image editing w text memes
Track popular phrases
Track top-10 by views
Monthly archiving
Scales easily + low cost
–Dwight D. Eisenhower
“Plans are nothing;planning is everything”
TRADITIONAL ARCHITECTURE
Many moving parts
Full control over servers
Customer managed
Customer patched
Customer monitored
CUSTOMER MANAGED SERVERS
Spinup instance
Install OS
Install packages
Manage dependencies
Manage updates
Monitor
Manage performance
–Adrian Cockroft, VP Cloud Architecture Strategy
“Remember that meltdown patch, and the need to patch all the hosts and containers, but nothing to patch
for Lambda?”
SERVERLESS ARCHITECTURE
1. User opens app
2. Request hits endpoint
3. User Login - cognito, auth0, okta, onelogin
4. Functions - upload, edit, albums, popular
5. Store user, image, text data
6. Store raw, edited & historical images
7. CDN - cache photos at edge
8. Separate AWS account for Meme app
9. CNAME entry acme.io -> endpoint
#2 API ENDPOINT
Paths to your functions
GET method
Post method
Put method
Patch, Delete
#3 USER LOGIN
Security assertion markup SAML
Auth0
Cognito
OneLogin
Active Directory Federated Svc
#4 SERVERLESS LAMBDA
Code in Python, nodejs, java, C#
Respond to events
S3, SNS, CF, API Gateway
IOT, Alexa, SES, SW, Kinesis
Log messages to CloudWatch
Use aliases & versions
#4 LAMBDA: HANDLER.JS
Code in Python, nodejs, java, C#
Respond to events
Log messages to CloudWatch
Use aliases & versions
#4 LAMBDA: BESTENDPOINT.JS
Modularize your business logic
Build unit tests for product code
Easier for testing locally
Supports code reuse
#4 LAMBDA: SERVERLESS.YML
Manifest defines your application
Outlines API gateway
Specifies functions
S3 buckets, Dynamodb tables
IAM users, etc
#4 SERVERLESS LIMITATIONS
Account wide API limits
Memory limits
Max 5 minutes runtime
More difficult to troubleshoot
How to test performance?
AWS X-Ray instrumentation
#5 DATASTORE - DYNAMODB
Configure table-by-table
store users & login info
store image names & paths
store text & meme data
#6 S3 STORAGE FOR IMAGES
object storage
original raw images
edited images
thumbnails
historical copies
lifecycle versions
#7 CLOUDFRONT CDN
Cache images at edge
Speedup user experience
Distribute globally
Integrates with app origin
Integrates with S3 origin
#9 ROUTE53 FOR DNS
Domain name services
Named after port 53
Add CNAME for your domain
References API Endpoint
THOUGHTS ON APP
What type of browsers are supported?
What type of formats need support?
Do we need multi-language support?
How do you measure active users?
THOUGHTS ON INFRA
Are your users global or in one region?
What uptime guarantees are required?
Can we lose images (user re-uploads)?
Ex: Instagram & Twitter lose comments sometimes
THOUGHTS ON TEAM
Will Acme Inc. support finished app?
Does Acme Inc. have devops expertise?
How about lambda & serverless?
Does Acme Inc know technology X?
Do you need to support multi-cloud?
ABOUT SEAN HULL
+1-917-442-3939
iheavy.com/blog
about.me/hullsean
github.com/hullsean
NEWSLETTER - SIGNUP!
iheavy.com/signup
cloud topics
startup focused
innovation inspired!
