Serverless 5 Takeaways

Serverless 5 Takeaways SERHAT CAN | TECHNICAL EVANGELIST @ATLASSIAN |
AWS COMMUNITY HERO | @SRHTCN

@srhtcn

@srhtcn It is Serverless the same way Wifi is wireless.
Gojko Adzic

@srhtcn

@srhtcn Let’s focus on the value, not the description for
a while

@srhtcn Why do we create software?

@srhtcn Businesses want to create value for customers and  -
make money. Why do we create software?

@srhtcn Ahmet is a software engineer.

@srhtcn Ahmet wrote an amazing “Hello world” application.

@srhtcn Ahmet wrote an amazing “Hello world” application. He thinks
it is helpful. He wants to put it live:

@srhtcn Ahmet wrote an amazing “Hello world” application. He thinks
it is helpful. He wants to put it live: • Rents a server • Install OS, language, configure server • Upload and run the app

@srhtcn People start using the app and want more features!
• Add more servers, avoid downtime • Build and manage VM images • Language, configuration updates • Logs should be stored somewhere • Add some Docker magic • Monitor, Scale, Rollback, optimize costs

@srhtcn Ahmet needs a “DevOps engineer” • Code in Python,
Java, shell • Expert in AWS • CI/CD pipelines, Jenkins • Linux master • Ansible, Chef, Puppet, Git, Bitbucket

@srhtcn Ahmet needs a “DevOps engineer” • Code in Python,
Java, shell • Expert in AWS • CI/CD pipelines, Jenkins • Linux master • Ansible, Chef, Puppet, Git, Bitbucket • Maaş: 5000-6000 TL

@srhtcn One more thing:

@srhtcn One more thing: Ahmet pays $$$$ even though not
many people use the product yet.

@srhtcn Bare metal IaaS (VMs) CaaS (containers) Cloud computing models
PaaS (Heroku, Elasticbean stalk) FaaS (YAY! Serverless!) AWS Amplify?!

@srhtcn Pay per use, really No charge when code is
not running Create value Focus on what really matters, ship fast

@srhtcn Serverless is a cloud model where you • pay
only for the time your code is executed • focus on providing business value, not managing your cloud environment.

@srhtcn How it works?

@srhtcn Our experience at 2015 Writing custom integrations for our
customers 2016 AWS Lambda for ops tasks on production 2017 A new customer facing feature on AWS Lambda 2018 A Spin Off: Thundra - Observability for AWS Lambda

@srhtcn Takeaway 1: Serverless doesn’t remove the need for great
engineers.

@srhtcn

@srhtcn • Event driven everything! • Functions should be idempotent
• Stateless with a twist • Choose additional tools wisely Serverless doesn’t remove the need for great engineers

@srhtcn Takeaway 2: Serverless is LessOps, not NoOps.

@srhtcn $40.000 incident

@srhtcn Serverless is LessOps, not NoOps • Build delivery pipeline
and deployment strategy • Monitoring has to be a first-class citizen • Cold starts • Infinite scale but not really !?

@srhtcn Takeaway 3: Serverless is usually cheaper,   even at
scale.

@srhtcn Dynamo cross-region replication

@srhtcn Serverless is usually cheaper, event at scale • Free
tier and 100ms based pricing • Total cost of ownership • No initial investment (just code, less ops) • Less maintenance cost • Engineering workforce cost • You are probably not Spotify or Netflix, even they…

@srhtcn Takeaway 4: Serverless isn’t just for   a couple
of use-cases.

@srhtcn Create alerts from Slack messages

@srhtcn Dynamo auto-scale and table migration

@srhtcn Service and incident management

@srhtcn Serverless isn’t just for a couple of use-cases •
FaaS is great for connecting stuff on the cloud • If it is event-driven, it can be done with FaaS / Serverless • There is support for bring your own language • API Gateway has websocket support though! • Commonly used for data and stream processing, ETL jobs, building APIs…

@srhtcn Takeaway 5: Vendor lock-in is often a myth.

@srhtcn

@srhtcn • Of course assess potential risks and impact •
No big cloud vendor increased its prices, pick one • Building abstractions is time consuming and counter productive • Loss of opportunity costs more Vendor lock-in is often a myth

@srhtcn Takeways 1. Still need great engineers. 2. LessOps, not
NoOps 3. Cheaper, even at scale 4. Can do many use-cases 5. Vendor lock-in myth

@srhtcn Serverless computing will become the default computing paradigm of
the Cloud Era. https://www2.eecs.berkeley.edu/Pubs/TechRpts/2019/EECS-2019-3.pdf

@srhtcn serhat.io twitter.com/srhtcn linkedin.com/in/serhatcan

Thank you! SERHAT CAN | TECHNICAL EVANGELIST @ATLASSIAN | AWS
COMMUNITY HERO | @SRHTCN

Serverless 5 Takeaways

Serverless 5 Takeaways

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