👋

Tal Bereznitskey

• Co-founder and CTO at (toriihq.com)
• Previous: Bizzabo, Checkpoint
• Coding since age of 6

Running
Highly Available
Large Scale
Systems Is a Lot of Work

What is Serverless

Serverless allows you to build and run applications and services without thinking about servers

EXAMPLE: S3

• How many file servers do you have?
• What is the CPU/Memory size of each server?
• How do you handle high traffic?

Serverless vs. Managed

Is RDS serverless?

RDS is not serverless ⛔️

Serverless Features

• High availability
• Scales from 0 to Infinity
• Pay per use
• No server management

Function as a Service - AWS Lambda

DEMO TIME

👩‍💻👨‍💻

Serverless Frameworks

What just happened?

API Server

A good match for FaaS

HTTP Request in, HTTP response out

Need a friend: AWS Gateway

DEMO TIME

🤖

Power to the devs

Use it for your next side project

Use it in a small work project

Build your startup on it

Serverless @Torii

We're 100% serverless

API Server(s)

Background jobs

THE GOOD PARTS 👍

Deployment Best Practices

1. Zero downtime
2. Versioning
3. Aliases
4. Instant Rollbacks
5. Infinite environments

No-ops

Things we don't do:

• Write scripts
• Configure Nginx
• Patch Linux
• Craft Dockerfiles
• Debug high CPU
• Worry about scale

Auto scaling, up and down

(all the way to 0)

Cost

(Cost depends on idleness)

Security

Automatic OS and runtime security patches

Permissions per function

Short living "servers"

Actively Improving

Since we started

• 30 seconds 👉 5 mins 👉 15 mins
• Node v6 👉 Node v8 👉 any version
• Lambda @edge
• Websockets support

Since most infra is on AWS, it keeps improving

CHALLANGES 🤔

Limits

15 minute max run time

30 seconds for API Gateway responses

No persistent file system

Performance - Cold starts

Other challenges

• Local Development
• DB Connection Pools
• Latency

Questions?

Tal Bereznitskey

• Works: Founder and CTO at Torii (toriihq.com)
• Codes: github.com/berzniz
• Tweets: @ketacode
• Writes: medium.com/ketacode, berzniz.com, ketacode.com