Tweet
Tweet

Slide 1

Slide 1 text

GOING SERVERLESS ΟΝ AWS WITH GOLANG & SAM 7th Athens Gophers Meetup George Tourkas (@georgetourkas)

Slide 2

Slide 2 text

SERVERLESS AWS SERVERLESS == FULLY MANAGED SERVICES

Slide 3

Slide 3 text

SERVERLESS AWS FULLY MANAGED SERVICES ▸ Proprietary to the Cloud Provider ▸ No Hardware/OS(-like) Management ▸ Built-in HA ▸ (Semi-)Auto Scalability ▸ Limited/Zero Idle Capacity ▸ Seamless Integration with other Services ▸ CLI and API

Slide 4

Slide 4 text

SERVERLESS AWS S3 (Simple Storage Service) ▸ Object Storage Service ▸ Static Content HTTP Server ▸ Lifecycle Rules ▸ Event Notifications ▸ Strong Consistency on Creations ▸ Eventual on Updates/Deletions

Slide 5

Slide 5 text

SERVERLESS AWS DynamoDB ▸ Key-Value and Document DB Service ▸ Option for On Demand or Provisioned Read/ Write Capacity ▸ Within/Across-Tables ACID ▸ Option for Strong or Eventual Consistent on Reads ▸ Table Activity Stream

Slide 6

Slide 6 text

SERVERLESS AWS API Gateway ▸ HTTP API Service ▸ Caching on Headers, Query Params ▸ Stages (Prod, Acc etc.) ▸ Websocket Support ▸ Request Throttling ▸ WAF, HTTPS only

Slide 7

Slide 7 text

SERVERLESS AWS API Gateway ▸ SDK Generation ▸ API Keys/Usage Plans Management ▸ Export to Swagger and OpenAPI 3 ▸ Documentation Construction Helper

Slide 8

Slide 8 text

SERVERLESS AWS SNS (Simple Notification Service) ▸ Pub/Sub Service ▸ Attribute-based Filter (Routing) ▸ Reliable Delivery ▸ Endpoints: ▸ HTTP/HTTPS ▸ Email ▸ SMS ▸ Push Notifications (iOS, Android etc.)

Slide 9

Slide 9 text

SERVERLESS AWS Lambda ▸ Function(=Code Execution) Service ▸ Custom Memory Allocation (128-3008MB in 64 MB incr.) ▸ Proportional Alloc of vCPU, Net & Disk I/O ▸ 1000 Concurrent Execs / 3000 in Burst Per Account ▸ Max Timeout 15 minutes

Slide 10

Slide 10 text

SERVERLESS AWS Lambda ▸ Invoked by: ▸ API Gateway Requests (sync) ▸ S3 Event Notifications (async) ▸ SNS Messages (async) ▸ DynamoDB Stream (poll-based) ▸ other Lambdas (sync or async) ▸ …

Slide 11

Slide 11 text

SERVERLESS AWS LAMBDA LIFECYLE Source: Anatomy of AWS Lambda Damian Sosnowski

Slide 12

Slide 12 text

SERVERLESS AWS LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski

Slide 13

Slide 13 text

SERVERLESS AWS LAMBDA LIFECYLE / SPAWN NEW PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski

Slide 14

Slide 14 text

SERVERLESS AWS LAMBDA LIFECYLE / IMPLICATIONS ▸ No/Limited Usability of In-Process State ▸ In-Process Caching ▸ Connection-Oriented Dependencies

Slide 15

Slide 15 text

SERVERLESS AWS IAM (Identity & Access Management) ▸ Centralised Management of Authentication & Authorisation Service ▸ “Policy” = Allowed/Denied set of Actions on set of Service Resources
 
 Effect: Allow, Action:S3/GetObject, Resource: my-bucket ▸ Associated with Users, Lambdas etc.

Slide 16

Slide 16 text

SERVERLESS AWS IAM

Slide 17

Slide 17 text

SERVERLESS AWS SAM (Serverless Application Model) ▸ Serverless App Development Framework ▸ Locally Run & Debug ▸ IDE Integration ▸ Single (=Code + Infra) Deployment Configuration

Slide 18

Slide 18 text

CODE & INFRA

Slide 19

Slide 19 text

CODE & INFRA CREATE PHOTO THUMBNAILS API

Slide 20

Slide 20 text

CODE & INFRA AWS GO SDK 1. Create a “Session” 2. Create a Service Client (S3, DynamoDB etc.) 3. ServiceClient.DoSth(*DoSthInput): (*DoSthOutput, err)
 or
 DoSthWithContext

Slide 21

Slide 21 text

No content

Slide 22

Slide 22 text

No content

Slide 23

Slide 23 text

No content

Slide 24

Slide 24 text

No content

Slide 25

Slide 25 text

No content

Slide 26

Slide 26 text

No content

Slide 27

Slide 27 text

CODE & INFRA TIn, TOut must be JSON (un)marshallable GOLANG LAMBDA

Slide 28

Slide 28 text

CODE & INFRA GOLANG LAMBDA SERVICE TIn TOut API GW events.APIGateway ProxyRequest events.APIGateway ProxyResponse SNS events.SNSEvent N/A S3 events.S3Event N/A DYNAMODB events.DynamoDB Event N/A

Slide 29

Slide 29 text

CODE & INFRA LAMBDA DEPENDENCIES

Slide 30

Slide 30 text

CODE & INFRA LAMBDA DEPENDENCIES

Slide 31

Slide 31 text

CODE & INFRA LAMBDA DEPENDENCIES

Slide 32

Slide 32 text

CODE & INFRA GOLANG LAMBDA LIFECYLE Source: Anatomy of AWS Lambda Damian Sosnowski

Slide 33

Slide 33 text

CODE & INFRA GOLANG LAMBDA LIFECYLE Source: Anatomy of AWS Lambda Damian Sosnowski init()

Slide 34

Slide 34 text

CODE & INFRA GOLANG LAMBDA LIFECYLE Source: Anatomy of AWS Lambda Damian Sosnowski init() main()

Slide 35

Slide 35 text

CODE & INFRA LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski

Slide 36

Slide 36 text

CODE & INFRA LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski init()

Slide 37

Slide 37 text

CODE & INFRA LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski init() main()

Slide 38

Slide 38 text

CODE & INFRA LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski init() main() main()

Slide 39

Slide 39 text

CODE & INFRA LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski init() main() main() main()

Slide 40

Slide 40 text

CODE & INFRA LAMBDA LIFECYLE / REUSE PROCESSES Source: Anatomy of AWS Lambda Damian Sosnowski init() main() main() main() main()

Slide 41

Slide 41 text

CODE & INFRA HANDLER NAMESPACE

Slide 42

Slide 42 text

CODE & INFRA HANDLER NAMESPACE

Slide 43

Slide 43 text

CODE & INFRA HANDLER NAMESPACE

Slide 44

Slide 44 text

CODE & INFRA ONE OR MANY HANDLERS ? ▸ Many Handlers: ▸ Smaller/Faster Initialisation ▸ Granular Monitor ▸ Reserve Concurrency

Slide 45

Slide 45 text

CODE & INFRA ONE OR MANY HANDLERS ? ▸ One Handler: ▸ Migrating from Standalone ▸ Complex Routing ▸ Middleware on http.HandlerFunc

Slide 46

Slide 46 text

CODE & INFRA AWS LAMBDA GO API PROXY ▸ Adapters for: ▸ net/http ▸ gorilla mux ▸ iris ▸ negroni ▸ gin https://github.com/awslabs/aws-lambda-go-api-proxy 
 by AWS Labs

Slide 47

Slide 47 text

No content

Slide 48

Slide 48 text

BUILD & RUN LOCALLY

Slide 49

Slide 49 text

BUILD & RUN LOCALLY BUILD

Slide 50

Slide 50 text

BUILD & RUN LOCALLY BUILD

Slide 51

Slide 51 text

BUILD & RUN LOCALLY BUILD

Slide 52

Slide 52 text

BUILD & RUN LOCALLY template.yaml BUILD

Slide 53

Slide 53 text

BUILD & RUN LOCALLY template.yaml BUILD

Slide 54

Slide 54 text

BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 55

Slide 55 text

BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 56

Slide 56 text

BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 57

Slide 57 text

BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 58

Slide 58 text

template.yaml BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 59

Slide 59 text

template.yaml BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 60

Slide 60 text

template.yaml BUILD & RUN LOCALLY RUN LOCALLY / API GATEWAY EVENT

Slide 61

Slide 61 text

BUILD & RUN LOCALLY app/create/Input create.json RUN LOCALLY / SNS EVENT

Slide 62

Slide 62 text

BUILD & RUN LOCALLY app/create/Input create.json RUN LOCALLY / SNS EVENT

Slide 63

Slide 63 text

BUILD & RUN LOCALLY app/create/Input create.json RUN LOCALLY / SNS EVENT

Slide 64

Slide 64 text

BUILD & RUN LOCALLY app/create/Input create.json lambdas/create RUN LOCALLY / SNS EVENT

Slide 65

Slide 65 text

BUILD & RUN LOCALLY app/create/Input create.json lambdas/create RUN LOCALLY / SNS EVENT

Slide 66

Slide 66 text

BUILD & RUN LOCALLY event.json RUN LOCALLY / SNS EVENT

Slide 67

Slide 67 text

BUILD & RUN LOCALLY event.json RUN LOCALLY / SNS EVENT

Slide 68

Slide 68 text

BUILD & RUN LOCALLY RUN LOCALLY / SNS EVENT

Slide 69

Slide 69 text

BUILD & RUN LOCALLY RUN LOCALLY / SNS EVENT

Slide 70

Slide 70 text

BUILD & RUN LOCALLY RUN LOCALLY / SNS EVENT template.yaml

Slide 71

Slide 71 text

BUILD & RUN LOCALLY RUN LOCALLY / SNS EVENT template.yaml

Slide 72

Slide 72 text

DEBUG LOCALLY

Slide 73

Slide 73 text

DEBUG LOCALLY ONE-OFF 1/2: DELVE BUILD in linux/amd64

Slide 74

Slide 74 text

DEBUG LOCALLY ONE-OFF 1/2: DELVE BUILD in linux/amd64

Slide 75

Slide 75 text

DEBUG LOCALLY ONE-OFF 2/2: SETUP IDE

Slide 76

Slide 76 text

DEBUG LOCALLY ONE-OFF 2/2: SETUP IDE

Slide 77

Slide 77 text

DEBUG LOCALLY ONE-OFF 2/2: SETUP IDE

Slide 78

Slide 78 text

DEBUG LOCALLY TYPICAL DEBUG PROCESS 1. compile 2. start the debugger 3. “connect” IDE to the debugger process 4. make the (HTTP) call
 
 .. to hit a breakpoint

Slide 79

Slide 79 text

DEBUG LOCALLY TYPICAL DEBUG PROCESS 1. compile 2. start the debugger 3. “connect” IDE to the debugger process 4. make the (HTTP) call
 
 .. to hit a breakpoint

Slide 80

Slide 80 text

DEBUG LOCALLY SAM DEBUG PROCESS 1. compile 2. start the debugger 3. make the (HTTP) call 4. “connect” IDE to the debugger process
 
 .. to hit a breakpoint

Slide 81

Slide 81 text

DEBUG LOCALLY SAM DEBUG PROCESS 1. compile 2. start the debugger 3. make the (HTTP) call 4. “connect” IDE to the debugger process
 
 .. to hit a breakpoint

Slide 82

Slide 82 text

DEBUG LOCALLY STEP 1: COMPILE

Slide 83

Slide 83 text

DEBUG LOCALLY STEP 1: COMPILE

Slide 84

Slide 84 text

DEBUG LOCALLY STEP 2: START THE DEBUGGER API GATEWAY EVENT SNS EVENT

Slide 85

Slide 85 text

DEBUG LOCALLY STEP 2: START THE DEBUGGER API GATEWAY EVENT SNS EVENT

Slide 86

Slide 86 text

DEBUG LOCALLY STEP 2: START THE DEBUGGER API GATEWAY EVENT SNS EVENT

Slide 87

Slide 87 text

DEPLOY

Slide 88

Slide 88 text

DEPLOY DEPLOYMENT STEPS PACKAGING DEPLOYING

Slide 89

Slide 89 text

DEPLOY DEPLOYMENT STEPS PACKAGING DEPLOYING

Slide 90

Slide 90 text

DEPLOY DEPLOYMENT STEPS PACKAGING DEPLOYING

Slide 91

Slide 91 text

DEPLOY DEPLOYMENT STEPS PACKAGING DEPLOYING

Slide 92

Slide 92 text

DEPLOY DEPLOYMENT STEPS PACKAGING DEPLOYING

Slide 93

Slide 93 text

DEPLOY DEPLOYMENT STEPS PACKAGING DEPLOYING

Slide 94

Slide 94 text

DEPLOY REMOTE LOGS ▸ tail ▸ filter ▸ absolute/relative time period

Slide 95

Slide 95 text

DEPLOY GRADUAL DEPLOYMENT ▸ Canary, Linear X Percent Every Y Minutes ▸ Metric-based Alarms for Rollback

Slide 96

Slide 96 text

CODE & INFRA SOURCE https://github.com/gtourkas/thumbnailr

Slide 97

Slide 97 text

PERFORMANCE

Slide 98

Slide 98 text

PERFORMANCE INITIAL ATTEMPTS

Slide 99

Slide 99 text

PERFORMANCE INITIAL ATTEMPTS

Slide 100

Slide 100 text

PERFORMANCE INITIAL ATTEMPTS

Slide 101

Slide 101 text

PERFORMANCE LATER ATTEMPTS

Slide 102

Slide 102 text

PERFORMANCE LATER ATTEMPTS

Slide 103

Slide 103 text

PERFORMANCE LATER ATTEMPTS

Slide 104

Slide 104 text

PERFORMANCE LATER ATTEMPTS

Slide 105

Slide 105 text

PERFORMANCE LATER ATTEMPTS

Slide 106

Slide 106 text

PERFORMANCE LATER ATTEMPTS

Slide 107

Slide 107 text

PERFORMANCE COLD START Source: Anatomy of AWS Lambda Damian Sosnowski

Slide 108

Slide 108 text

PERFORMANCE GOLANG COLD START Source: Cold Starts in AWS Lambda Mikhail Shilkov - Sep 26, 2019

Slide 109

Slide 109 text

PERFORMANCE GOLANG COLD START Source: Cold Starts in AWS Lambda Mikhail Shilkov - Sep 26, 2019

Slide 110

Slide 110 text

PERFORMANCE API GW + LAMBDA vs ALB + EC2

Slide 111

Slide 111 text

PERFORMANCE API GW + LAMBDA vs ALB + EC2

Slide 112

Slide 112 text

PERFORMANCE API GW + LAMBDA vs ALB + EC2

Slide 113

Slide 113 text

PERFORMANCE ALB + LAMBDA vs ALB + EC2

Slide 114

Slide 114 text

PERFORMANCE ALB + LAMBDA vs ALB + EC2

Slide 115

Slide 115 text

PERFORMANCE ALB + LAMBDA vs ALB + EC2

Slide 116

Slide 116 text

PERFORMANCE API GW + LAMBDA vs ALB + LAMBDA

Slide 117

Slide 117 text

PERFORMANCE API GW + LAMBDA vs ALB + LAMBDA

Slide 118

Slide 118 text

PERFORMANCE API GW + LAMBDA vs ALB + LAMBDA

Slide 119

Slide 119 text

COST

Slide 120

Slide 120 text

COST LAMBDA LOGS

Slide 121

Slide 121 text

COST LAMBDA LOGS

Slide 122

Slide 122 text

COST LAMBDA LOGS

Slide 123

Slide 123 text

COST LAMBDA LOGS Billed Duration is rounded UP to the nearest 100ms

Slide 124

Slide 124 text

COST LAMBDA ▸ Request Charges:
 
 Requests * $0.0000002 ▸ Compute Charges:
 
 Duration in Secs * GB Mem / 1024 * $0.00001667
 


Slide 125

Slide 125 text

COST LAMBDA ▸ Request Charges:
 
 30M * $0.0000002 = $6 ▸ Compute Charges:
 
 30M * 0.200 * 192 / 1024 * $0.00001667 = $18.75 ▸ Total Charges = $24.75


Slide 126

Slide 126 text

COST LAMBDA ▸ Request Charges:
 
 30M * $0.0000002 = $6 ▸ Compute Charges:
 
 30M * 0.200 * 192 / 1024 * $0.00001667 = $18.75 ▸ Total Charges = $24.75


Slide 127

Slide 127 text

COST

Slide 128

Slide 128 text

COST Memory: 1344 Time: 294 ms Cost: $0.0000066

Slide 129

Slide 129 text

COST Memory: 1344 Time: 294 ms Cost: $0.0000066 Memory: 1280 Time: 307 ms Cost: $0.0000083

Slide 130

Slide 130 text

COST AWS LAMBDA POWER TUNING ▸ Deployable via SAM ▸ Tuning Strategies: ▸ Speed ▸ Cost ▸ Balanced https://github.com/alexcasalboni/aws-lambda-power-tuning 
 by Alex Casalboni

Slide 131

Slide 131 text

COST TRANSFORM - NOT TRANSPORT

Slide 132

Slide 132 text

COST TRANSFORM - NOT TRANSPORT

Slide 133

Slide 133 text

COST TRANSFORM - NOT TRANSPORT Lambda Cost at 300 ms = $0.0000083 Lambda Cost at 200 ms = $0.0000063 Diff = $0,000002 DynamoDB Stream Read Request = $0,000000226

Slide 134

Slide 134 text

COST COMPARISON SOLUTION MONTHLY COST ($) API GW + LAMBDA 105.00 + 24.75 129.75 ALB + LAMBDA 21.03 + 24.75 45.78 ALB + EC2* 21.03 + 67.94 88.97 * 2 x t2.medium

Slide 135

Slide 135 text

COST COMPARISON SOLUTION MONTHLY COST ($) API GW + LAMBDA 105.00 + 24.75 129.75 ALB + LAMBDA 21.03 + 24.75 45.78 ALB + EC2* 21.03 + 67.94 88.97 * 2 x t2.medium

Slide 136

Slide 136 text

COST COMPARISON SOLUTION MONTHLY COST ($) API GW + LAMBDA 105.00 + 24.75 129.75 ALB + LAMBDA 21.03 + 24.75 45.78 ALB + EC2* 21.03 + 67.94 88.97 * 2 x t2.medium

Slide 137

Slide 137 text

COST FREE TIER SERVICE FREE TIER DURATION S3 5 GB, 20K GET, 5K PUT 12 MONTHS DYNAMODB 25 GB, 25 RCU, 25 WCU ALWAYS API GW 1 MILLION CALLS/MON 12 MONTHS SNS 1 MILLION PUB/MON 100K HTTP(S) DELIVERIES ALWAYS LAMBDA 1 MILLION EXECS/MON ALWAYS

Slide 138

Slide 138 text

Q&A