AWS Serverless Web Day

Daniel Taschik – 06/23/2016

We hit a nerve.

100M Users

192 Countries

1.5BVideos

Dubsmash 2.0

Connect Create Communicate

Sending hundreds of millions of

pushes using AWS Lambda

Use Cases for Pushes at Dubsmash

Challenges

+

Global User Base Real-time delivery Tracking

3 Steps

1. Device registration

2. Sending push notifications

3. Result processing

1.) Device Registration

register with

push token

ARN & device data

worker

SNS

SQS device store

2.) Sending Push Notification

Push

Trigger

device data store

load targeted devices

slice device batch in batches

of 35k

notification

scheduler

SNSLambda

notification

dispatcher

wrap notifications for max.

SNS payload

~ 300 recipients

push!

SNS

Code example

3.) Result Processing

SNS

Lambda

SQS

Lambda results

worker device store

delivery results / APNS

Feedback Service

deactivate/ update

devices

Push!

Some metrics

>500Mpushes sent last months

>3.5MLambda invocations

>11.8Mseconds of Lambda

compute time

<10min*to send 15M pushes at once

14Gb/8Corehardware for scheduling

2Gb/2Corehardware for dispatcher

Let’s say it with video!

Thank you

daniel@dubsmash.com | @dtaschik