How to use lambda ? How lambda costs our functions ? How to write a lambda function in Node.js ? Sample lambda function in Node.js. My name is Muhammet Arslan, and software engineer at Sony. Every wednesday we are meeting up a subject in Sony to tech our teams about anything from It to Kung-Fu, and more . This weekend, me, explained a lot of thing about Aws Lambda. More : http://muhammetarslan.com.tr

1. AWS LAMBDA
And The Serverless Cloud
Muhammet Arslan
Software Developer @Sony
This document prepared for BBS on 14th May, 2016 Sony

2. Write
Your Code
And That’s All!
Never think about;
Servers
Or
Os
Or
Scalability
Or
Durability

3. LAMBDA
Write / Upload
your code to
AWS Lambda
Trigger the AWS
from other AWS
services like S3,
Api Gateway,
Dynamodb…
Lambda only runs
your code when
triggering and
uses only
compute
resources needed
Pay for the
compute time
you use1

4. CLEAR
Photo is uploaded to S3 by
web server
Lambda automaticaly
triggered by AWS S3 service
Deployed «Lambda» code
runs and resizes the photo

5. BENEFITS

6. EXECUTION
• Linux kernel version : 4.1.19-24.31.amzn1.x86_64
Supporting Languages and RUNTIME Versions
• Node.js: v0.10.36, v4.3.2 (recommended)
• Java: Java 8
• Python: Python 2.7
Already-Installed Libraries
• Node.js: Imagick, Aws SDK
• Java: NOTHING!
• Python: AWS SDK (boto3)

7. SERVICES
S3
DynamoDB
Kinesis
SNS
SES
COGNITO
CloudWatch
CloudFormation
Config

8. FUNCTION
The Push Event Model
• Publish events to AWS Lambda and Directly invoke
S3
Cognito
SNS
ECHO
Custom App

9. FUNCTION
The Pull Event Model
AWS Lambda polls an event source and
invokes your Lambda function when the service
detects new events
DynamoDB
Kinesis

10. LIMITATIONS
Ephmeral Disk Capacity512 MB
Number of processes and threads
1024
Maximum execution duration per request
300 Sec
Invoke request body payload size (RequestResponse)
6 MB
Invoke request body payload size (Event)
128 K
Invoke response body payload size (RequestResponse)
6 MB

11. NETFLIX
Delivered 7 million hours of video to 50 million customers in 60 countries per quarter
Studios pushes
videos to Netflix
frequently
Before Lambda!
Over the Santa systems’
Netflix process file (5
minutes chunks for paralel
processing) and repackage
And deploy to
watched by users!
After Lambda!
Studios pushes
videos to S3, via
Aspera
S3 Trigger lambda to
start the process (
process the file,
repackage and deploy)

12. LIFE
The developed code, on the Sony Bbs Meeting, uploaded to,
http://github.com/geass/sony-bbs-lambda
• User uploads an image from administration area (was developed with PHP)
• Administration system uploads image to AWS S3 BUCKET
• S3 Invokes the lambda to fetch & resize Images
• Lambda fetch & resize & upload images to same bucket
• And Show the resized versions on Web Site

13. COSTS
Request Duration
• First 1 million requests
per month are free
• $0.20 per 1 million
requests thereafter
Duration is calculated
from the time your code
begins executing until it
returns or otherwise
terminates, rounded up to
the nearest 100ms.
«The price depends on
the amount of memory
you allocate to your
function. »

14. COSTS
Memory (MB) Free tier seconds per month Price per 100ms ($)
128 3,200,000 0.000000208
192 2,133,333 0.000000313
256 1,600,000 0.000000417
320 1,280,000 0.000000521
384 1,066,667 0.000000625
448 914,286 0.000000729
512 800,000 0.000000834
576 711,111 0.000000938
640 640,000 0.000001042
704 581,818 0.000001146
768 533,333 0.000001250
832 492,308 0.000001354
896 457,143 0.000001459
960 426,667 0.000001563
1024 400,000 0.000001667
1088 376,471 0.000001771
1152 355,556 0.000001875
1216 336,842 0.000001980
1280 320,000 0.000002084
1344
304,762 0.000002188
1408
290,909 0.000002292
1472 278,261 0.000002396
1536 266,667 0.000002501

15. EXAMPLE If you allocated 512MB of memory to your function, executed it 3 million times in
one month, and it ran for 1 second each time, your charges would be calculated as
follows:
Monthly compute charges
The monthly compute price: $0.00001667 per GB-s
The free tier : 400,000 GB-s.
Total compute (seconds) = 3M * (1s) = 3,000,000 seconds
512MB/1024 = 1,500,000 GB-s
1,500,000 GB-s – 400,000 free tier GB-s = 1,100,000 GB-s
Monthly compute charges:
1,100,000 * $0.00001667 = $18.34
Monthly request charges
The monthly request price is $0.20 per 1 million requests and
the free tier provides 1M requests per month.
3M requests – 1M free tier requests = 2M Monthly billable requests
Monthly request charges:
2M * $0.2/M = $0.40
Total
Total charges = Compute charges + Request charges:
$18.34 + $0.40 = $18.74 per month

16. http://github.com/geass/sony-bbs-lambda
Muhammet Arslan
Software Developer @Sony
Thank You!