Getting started building your first serverless web application on AWS
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Getting started with AWS serverless computing. A cloud computing model where developers can build and run applications without having to manage or provision servers. With AWS serverless services like AWS Lambda, developers can focus solely on writing code for their application's business logic, and AWS handles the infrastructure management, scaling, and availability aspects. This allows for highly scalable, event-driven architectures and pay-per-use pricing, where you only pay for the actual usage of your applications or functions.
Getting started building your first serverless web application on AWS
- 1. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Ioannis Polyzos, Senior Solutions Architect 01/07/2022 Getting started building your first serverless web application on AWS
- 2. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Agenda Evolution of computing What is serverless ? AWS Lambda Use Cases API Gateway Frameworks Thank you
- 3. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. There is no server better than no server Werner Vogels, CTO Amazon
- 4. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Evolution of computing
- 5. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lets take a look at the evolution of computing Physical Servers in Datacenters Virtual Servers in Datacenters a Virtual Servers in the Cloud
- 6. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Each progressive step was better Physical Servers in Datacenters a Virtual Servers in the Cloud Higher utilization Faster provisioning speed Improved uptime Disaster recovery Hardware independence Virtual Servers in Datacenters Trade CAPEX for OPEX More scale Elastic resources Faster speed and agility Reduced maintenance Better availability and fault tolerance Better Automation
- 7. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. What is serverless ? No servers to provision or manage Scales with usage Never pay for idle Availability and fault tolerance build int
- 8. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Serverless means : Greater agility Less Overhead Better focus Increased Scale More flexibility Faster time to market
- 9. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. AWS Lambda Zero administration Focus on business logic, not infrastructure. Just upload your code, and AWS Lambda handles the rest. Autoscaling AWS Lambda scales the infrastructure as needed to match the event rate and pay as you go at 100ms intervals. Bring your own code Code in Node.JS, Java, Python or C#. Create threads and processes, run batch scripts or other .exe files. Sync and Async events Respond to application calls with low-latency real-time functions.
- 10. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. AWS Lambda Event-driven compute Function as a Service Serverless FaaS
- 11. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. What does Lambda Handle Load Balancing Auto Scaling Handling Failures Security Isolation OS Management Managing Utilization (and much more) for you
- 12. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Serverless Lambda Applications Function Services (any) Changes in data state Requests to endpoints Changes in resource state Node.js Python Ruby Java Go .NET
- 13. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Anatomy of Lambda function import json def lambda_handler(event, context): # TODO implement return { 'statusCode': 200, 'body': json.dumps('Hello from Lambda!') } Handler() function Function to be executed upon invocation Event object Data sent during Lambda function Invocation Context object Methods available to interact with runtime information (request ID, log group, more)
- 14. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Demo
- 15. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda pricing Buy compute time in increments of 1ms ! Low request change No hourly, daily or monthly minimums No per device fees Never pay for idle
- 16. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda execution model API Gateway /order Lambda function Synchronous (push) SNS S3 Asynchronous (event) (reqs) Lambda function DynamoDB Kinesis Changes AWS Lambda Service Lambda function Poll Based
- 17. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda API SDK Clients Lambda directly invoked via invoke API API provided by the Lambda service Used by all other services that invoke Lambda across all models Supports sync and async Can pass any event payload, structure you want Client included in every SDK
- 18. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda permissions model Fine grained security controls for both execution and invocation Execution policies: Define what AWS resources/API calls can this function access via IAM Used in streaming invocations e.g. "Lambda function A can read from DynamoDB table users" Function policies: Used for sync and async invocations e.g. Actions on bucket X can invoke Lambda function Z" Resource policies allow for cross account access
- 19. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Use cases Web Applications Static Sites Complex web apps Packages for Flask and Express Back-Ends Apps & Services Mobile IoT Chatbots Powering Chatbot logic Data Processing Real time Map Reduce Batch Amazon Alexa Powering Voice Enabled Apps Alexa Skills Kit I里 Automation Policy Engines Extending AWS Services Infrastructure Management
- 20. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. API Gateway Create a unified API frontend for multiple micro services DDoS protection and throttling for your backend Authenticate and authorize requests to a backend Throttle, meter, and monetize API usage by third-party developers
- 21. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Demo
- 22. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Frameworks AWS SAM Serverless AWS Amplify SPARTA Claudia.js MIDWAY AWS : Third Party :
- 23. 息 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Thank you for attending! Ioannis Polyzos Senior Solutions Architect ipolyzos@amazon.com @ipolyzos