Slide 1
Slide 1 text
@n_bass
Building Everything on Serverless
Slide 2
Slide 2 text
@n_bass
λ
Slide 3
Slide 3 text
@n_bass
Cloud App / Hobby Projects
Enter Serverless + Serverless Compute
Examples
Under the Hood
AWS Lambda
Serverless Framework
Live Demo
Slide 4
Slide 4 text
@n_bass
How do you write + run cloud apps?
Slide 5
Slide 5 text
@n_bass
Code
Test
Deploy
Monitor
Provision
Infrastructure
Slide 6
Slide 6 text
@n_bass
Your Code!
Virtual Machine (or maybe PaaS)
?
Your Code!
Database/Datastore
Logs
Cron
HTTP/S
SSH
Slide 7
Slide 7 text
@n_bass
Infrastructure and Management
Slide 8
Slide 8 text
@n_bass
Infrastructure and Management
Slide 9
Slide 9 text
@n_bass
Infrastructure is an implementation detail.
Slide 10
Slide 10 text
@n_bass
Developers should care about only their code.
Slide 11
Slide 11 text
@n_bass
Drop the infrastructure.
Slide 12
Slide 12 text
@n_bass
Code
Test
Deploy
Monitor
Provision
Infrastructure
Slide 13
Slide 13 text
@n_bass
Idle Code == Idle Servers
Slide 14
Slide 14 text
@n_bass
Serverless?
Slide 15
Slide 15 text
@n_bass
HTTP API for Web/Mobile App
HTTPS Trigger
Event
Your Code!
Function
Database/
Datastore
Services
Other
Functions,
APIs
APIs
Logs, …
Monitoring
Slide 16
Slide 16 text
@n_bass
Serverless == BaaS
Slide 17
Slide 17 text
@n_bass
Serverless Compute == FaaS
Slide 18
Slide 18 text
@n_bass
Serverless Function
Slide 19
Slide 19 text
@n_bass
Serverless (BaaS)
Serverless Compute (FaaS)
Serverless Function
Slide 20
Slide 20 text
@n_bass
Serverless is another abstraction.
Slide 21
Slide 21 text
@n_bass
FaaS
PaaS
IaaS
Slide 22
Slide 22 text
@n_bass
But there are servers?!?!?!
Slide 23
Slide 23 text
@n_bass
Good Use Cases
Slide 24
Slide 24 text
@n_bass
HTTP API for Web/Mobile App
HTTPS Call
Event
Your Code!
Function
Database/
Datastore
Service
Slide 25
Slide 25 text
@n_bass
Example: ACM@UC Slack Badge
Slide 26
Slide 26 text
@n_bass
Scheduled
Event
Event
Your Code!
Function
Messaging,
Reporting, etc.
API
Automated Tasks
Data
API
Slide 27
Slide 27 text
@n_bass
New Image/
Video in S3
Bucket
Event
Your Code!
Function
S3 Bucket
Service
Image and Video Resizing
Slide 28
Slide 28 text
@n_bass
Bad Use Cases
Persistent Connections, State Sharing
Slide 29
Slide 29 text
@n_bass
Building Everything on Serverless
Slide 30
Slide 30 text
@n_bass
Building Everything on Serverless
Some Things
Slide 31
Slide 31 text
@n_bass
Containers
Slide 32
Slide 32 text
@n_bass
Simple Function: Availability
Event
Instance
Function
HTTPS GET
Instance
Instance
Instance
https://martinfowler.com/articles/serverless.html
Slide 33
Slide 33 text
@n_bass
Containers
Package code into an image that can be run (almost anywhere)
Slide 34
Slide 34 text
@n_bass
Container Reuse
aws.amazon.com/blogs/compute/container-reuse-in-lambda/
Slide 35
Slide 35 text
@n_bass
Slide 36
Slide 36 text
@n_bass
HTTP Call
Event Stream
S3 Bucket
Database
Queue (SQS)
Logs
And more…
Slide 37
Slide 37 text
@n_bass
Cost
Serverless Computing for College Students?
Slide 38
Slide 38 text
@n_bass
$ = Number Requests +
Compute Time (gb-sec)
Slide 39
Slide 39 text
@n_bass
Pricing on AWS Lambda
• $0.2 per 1 million requests
• $0.00001667 per gb-sec
Slide 40
Slide 40 text
@n_bass
Sample Function
1 million requests
800ms per request
256mb (0.25gb) memory
-> $0.2
-> 1M * 0.8sec -> 0.8M sec
-> 0.8M sec * 0.25gb = 200,000 gb-sec
200,000 * $0.00001667 = $3.34
Total = $0.2 + $3.34 = $3.54/month
Slide 41
Slide 41 text
@n_bass
AWS Free Tier
aws.amazon.com/free/
Slide 42
Slide 42 text
@n_bass
λ
Slide 43
Slide 43 text
@n_bass
Serverless Framework
(serverless.com)
Slide 44
Slide 44 text
@n_bass
Serverless != Serverless Framework
Slide 45
Slide 45 text
@n_bass
Slide 46
Slide 46 text
@n_bass
Serverless Framework is Cloud Agnostic
Slide 47
Slide 47 text
@n_bass
Why A Framework?
Slide 48
Slide 48 text
@n_bass
Live Demo
Slide 49
Slide 49 text
@n_bass
Simple HTTP Endpoint (hello world)
Event
Our Code!
Respond 200 OK
Function
HTTPS GET
Slide 50
Slide 50 text
@n_bass
Scheduled Event: Weather Report
Scheduled
Event (1d)
Event
Our Code!
Get data, then send
email
Function
darksky.net
API
API
AWS SES
API
Slide 51
Slide 51 text
@n_bass
Building Some Things on Serverless
Slide 52
Slide 52 text
@n_bass
Resources
• serverless.com
• serverless.com/framework/docs/providers/aws/guide/quick-start/
• aws.amazon.com/lambda
• aws.amazon.com/free
• cloud.google.com/free
• github.com/serverless/examples
• github.com/anaibol/awesome-serverless
• martinfowler.com/articles/serverless.html
• www.youtube.com/watch?v=Y6B3Eqlj9Fw
• github.com/openfaas/faas