Presented at PETechTalk in Melbourne

1. #PETechTalk@pacodelacruz@pacodelacruz
Pe.
Paco de la Cruz | Deloitte Platform Engineering
Serverless
The Good, the Bad and the Ugly

2. #PETechTalk@pacodelacruz
@pacodelacruz
linkedin.com/in/pacodelacruz
pacodelacruz.io
slideshare.net/pacodelac/presentations
github.com/pacodelacruz

3. #PETechTalk@pacodelacruz
What’s Serverless
Main Players
Use Cases
The Good, the Bad, and the Ugly
Demos
Key Takeaways
Q & A
Agenda

4. #PETechTalk@pacodelacruz
What is Serverless?

5. #PETechTalk@pacodelacruz
Serverless and the Cloud Compute Spectrum

6. #PETechTalk@pacodelacruz
Serverless and the Cloud Compute Spectrum

7. #PETechTalk@pacodelacruz
Serverless and the Cloud Compute Spectrum

8. #PETechTalk@pacodelacruz
We Won’t Cover Today
Serverless
Containers /
CaaS
FaaS on K8s /
Container
Orchestrators

9. #PETechTalk@pacodelacruz
Serverless FaaS and its Benefits
Server abstraction
(Ops Productivity)
Scaling,
Load balancing &
High availability
built-in

10. #PETechTalk@pacodelacruz
Serverless FaaS and its Benefits
Server abstraction
(Ops Productivity)
Event-driven scaling
not resource-driven
Scaling,
Load balancing &
High availability
built-in
Pay only for
what you use
Devs Productivity
(Programming
Models)

11. #PETechTalk@pacodelacruz
Serverless FaaS in a Nutshell
Event Triggers Code Outputs
React and get inputs from
http request and services
Code Send results to different
services / protocols

12. #PETechTalk@pacodelacruz
Serverless FaaS – Main Players
AWS
Lambda
Azure
Functions
Google Cloud
Functions

13. #PETechTalk@pacodelacruz
Language Support
Java 8
Go 1.x
PowerShell
Node.js 8.10 & 10
C# (.NET Core 1.0, 2.1)
Python 2.7, 3.6, 3.7
Ruby code 2.5
Runtime API (extend)
C#
Node.js 8 & 10
F#
Java 8
Python 3.6
PowerShell (Preview)
Typescript
Node.js 8 & 10
Python 3.7
Go 1.11

14. #PETechTalk@pacodelacruz
Triggers (not an exhaustive list)
Sync
Http API / Webhooks,
Alexa, Kinesis, Lex, etc.
Async
S3, SNS, SES,
CloudWatch,
CodeCommit, etc.
Sync
Http API / Webhooks
Async
Event Grid, Blob, Cosmos
DB, Event Hubs, Queue
Storage, Service Bus,
Timer, Graph Events
Sync
Http API / Webhooks
Async
Cloud Storage, Cloud
Pub/Sub, Firebase,
Stackdriver Logging

15. #PETechTalk@pacodelacruz
Use Cases
APIs for SPAs
APIs for Web
Apps
Mobile App
Back Ends
IoT Back Ends
Integration
Pub/Sub
Services
Event Stream
Processing
Data
Processing
MapReduce
IT and Ops
Automation
CRON Jobs
Chatbots

16. #PETechTalk@pacodelacruz
Speed-to-Market
Focus on Business Value (Devs & Ops)
Cost (with Sporadic Loads)
Event-Based Scaling (Ideal for Bursty Loads)
Tooling, Local Dev & Portable Runtime
Event Triggers (More than just Http)
The Good

17. #PETechTalk@pacodelacruz
Vendor Lock-in
Limited Programming Languages
Opinionated Programming Models
Timeouts
Still Maturing
Constant Changes
The Bad

18. #PETechTalk@pacodelacruz
Cold Starts
The Ugly
Server
Allocation
Function
Deployment
Loaded into
Memory
Code
Execution

19. #PETechTalk@pacodelacruz
Cold Starts *, **
The Ugly
Server
Allocation
Function
Deployment
Loaded into
Memory
Code
Execution
* Only impacts interactive sync requests
** There are some mitigation strategies

20. #PETechTalk@pacodelacruz
Sync & Low Latency
Constant Load
Portability
Full-Control of Infrastructure
Language Lack of Support
Limitations of Programming Model
Sync & Low Latency Workloads
Constant Load
Portability
Full-Control of Infrastructure
Language Lack-of-Support
Limitations of Programming Models
When Not to Use Serverless

21. #PETechTalk@pacodelacruz
Let’s have
some fun!Pe.

22. #PETechTalk@pacodelacruz
Quick Introduction to Azure Functions
Programming Models (Bindings)
Development and Monitoring Tooling
Demo 1
github.com/pacodelacruz/
serverless-intro-azure-functions

23. #PETechTalk@pacodelacruz
Building a Serverless Request Bin
Memory cache across instances
Strategy to mitigate cold-starts
Dependency Injection
Deployment to Azure
Demo 2
github.com/pacodelacruz/
serverless-request-bin-azure-functions

24. #PETechTalk@pacodelacruz
Productivity (Prog. Models, Devs & Ops Tools)
Ideal for Bursty or Async Short-lived Loads
Specific Use Cases (More than just Http)
Enterprise-Grade for Certain Scenarios
Evolving Rapidly, Still Maturing
Know the Capabilities of your Cloud Provider
Key Takeaways

25. #PETechTalk@pacodelacruz
Q & A

26. #PETechTalk@pacodelacruz
:)

27. #PETechTalk@pacodelacruz
@pacodelacruz
linkedin.com/in/pacodelacruz
pacodelacruz.io
slideshare.net/pacodelac/presentations
github.com/pacodelacruz