Serverless PHP @ PHPCon Poland 2019

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Serverless PHP Sebastian Grodzicki @ PHPCon Poland 2019 @sebgrodzicki

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2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

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2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

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phpinfo(); Sebastian Grodzicki  • Engineering Manager at • ex-CTO at SHOWROOM & GoldenLine • PHP developer for 15+ years • #serverless @sebgrodzicki

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Serverless • storage as a service (e.g. Amazon S3), • database as a service (e.g. Amazon Aurora), • message queue as a service (e.g. Amazon SQS), • etc.

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Serverless replaces the traditional approaches to running applications.

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Platform options Physical servers

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Platform options Physical servers Virtual machines

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Platform options Physical servers Virtual machines Containers

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Platform options Physical servers Virtual machines Containers Platform

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Platform options Physical servers Virtual machines Containers Platform Serverless

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Platform options Physical servers Virtual machines Containers Platform Serverless Abstraction

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Platform options Physical servers Virtual machines Containers Platform Serverless Abstraction Control

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Why serverless?

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Why serverless? • We don't manage, update, conﬁgure, provision servers or containers,

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Why serverless? • We don't manage, update, conﬁgure, provision servers or containers, • We don't reserve or scale servers or containers, instead they are scaled automatically and transparently for us, • We don't pay for ﬁxed resources, instead we pay for what we actually use (e.g. execution time).

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Serverless can provide more scalable, affordable and reliable architectures for less effort.

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Data center evolution DC

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Data center evolution DC

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Data center evolution DC

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Data center evolution DC VM VM VM VM VM VM VM VM VM VM VM VM

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Data center evolution DC VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C VM C C C C C C

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Data center evolution   DNS   CDN

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Data center evolution PaaS IaaS SaaS

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Function as a Service (FaaS)

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FaaS AWS Lambda Microsoft Azure Functions Google Cloud Functions

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FaaS AWS Lambda

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Bref

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$ composer require bref/bref CLI

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$ composer require bref/bref $ vendor/bin/bref init CLI

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service: app    provider:  name: aws  region: us-east-1  runtime: provided    plugins:  - ./vendor/bref/bref    functions:  api:  handler: index.php  description: ''  timeout: 28 # in seconds (API Gateway has a timeout of 29 seconds)  layers:  - ${bref:layer.php-73-fpm}  events:  - http: 'ANY /'  - http: 'ANY /{proxy+}' serverless.yml

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$ composer require bref/bref $ vendor/bin/bref init    $ serverless deploy CLI

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$ serverless invoke -f function "Hello world" CLI

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$ serverless invoke -f function -l    "Hello world"    ------------------------------------------------------  START RequestId: 71dd0550-46b4-4f13-8438-8f687f385d0c Version: $LATEST    END RequestId: 71dd0550-46b4-4f13-8438-8f687f385d0c    REPORT  RequestId: 71dd0550-46b4-4f13-8438-8f687f385d0c Duration: 14.20 ms  Billed Duration: 100 ms  Memory Size: 1024 MB  Max Memory Used: 67 MB CLI

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$ serverless invoke \  > --function function \  > --data='{"name":"PHPCon Poland"}'    "Hello PHPCon Poland" CLI

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Benchmarks: Cold starts 128 512 1024 2048 PHP function 500 ms 240 ms 230 ms 220 ms HTTP application 345 ms 250 ms 240 ms 240 ms Symfony 5.4 s 1.4 s 800 ms 500 ms

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Benchmarks: Average (warm) execution time 128 512 1024 2048 PHP function 175 ms 35 ms 16 ms 13 ms HTTP application 10 ms 1 ms 1 ms 1 ms Symfony 58 ms 4 ms 4 ms 4 ms

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Benchmarks: CPU performance 128 512 1024 2048 bench.php 5.7 s 1.4 s 0.65 s 0.33 s

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Maturity matrix Simplicity Performances Reliability Jobs, Cron ⬤ ⬤ ⬤ API ⬤ ⬤ ⬤ API with MySQL / PostgreSQL ⬤ ⬤ ⬤ Website ⬤ ⬤ ⬤ Website with MySQL / PostgreSQL ⬤ ⬤ ⬤ Legacy application ⬤ ⬤ ⬤