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![{ "name" : "Raphael Londner", "title" : "Developer Advocate @MongoDB", "location" : "Palo Alto, CA", "email" : "raphael.londner@mongodb.com", "twitter" : "@rlondner”, "languages": [{"name":"french" proficiency:"native"}, {"name":"english" proficiency:"professional"}, {"name":"italian" proficiency:"elementary"}] } @rlondner Who am I?](https://image.slidesharecdn.com/mongodbatlasawslambda-170427160034/75/Building-serverless-apps-with-MongoDB-Atlas-and-AWS-Lambda-2-2048.jpg)
![@rlondner Best practices • Db connection string stored as env. variable • Use –E parameter with lambda-local • Reference it with process.env['MONGODB_ATLAS_URI'] • Encrypt Db connection string in AWS Lambda • Use AWS.KMS() to decrypt() the connection string](https://image.slidesharecdn.com/mongodbatlasawslambda-170427160034/75/Building-serverless-apps-with-MongoDB-Atlas-and-AWS-Lambda-15-2048.jpg)
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Building serverless apps with MongoDB Atlas and AWS Lambda
The document provides a comprehensive guide on using MongoDB Atlas with AWS Lambda for building serverless applications. It covers the anatomy of Lambda functions in various programming languages, how to develop and deploy with Atlas and Lambda, best practices for environmental variable management, performance optimizations, and relevant resources. Additionally, it promotes the MongoDB World event for further learning opportunities.
Building serverless apps with MongoDB Atlas and AWS Lambda
- 1. Using MongoDB Atlas withAWS Lambda How to build apps in a serverless world @rlondner
- 2. { "name" : "RaphaelLondner", "title" : "Developer Advocate @MongoDB", "location" : "Palo Alto, CA", "email" : "raphael.londner@mongodb.com", "twitter" : "@rlondner”, "languages": [{"name":"french" proficiency:"native"}, {"name":"english" proficiency:"professional"}, {"name":"italian" proficiency:"elementary"}] } @rlondner Who am I?
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- 4. @rlondner Where do youhost your databases & apps? • Physical server in private datacenter • Virtual server in private datacenter • VMWare vSphere, Microsoft Hyper-V, other • Physical or virtual server in private cloud • Rackspace, DigitalOcean, BlueMix, other • Virtual server in public cloud • Amazon Web Services, Microsoft Azure, Google Cloud
- 5. @rlondner Poll: Which server-side programminglanguage do you use?
- 6. @rlondner Use cases • Webapplications • Data processing (real-time streaming analytics) • Scalable back ends (mobile apps, IoT devices) • Amazon Alexa • Chatbots
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- 8. @rlondner Anatomy of aLambda function (Node.js) • Handler function in index.js • exports.myHandler = function(event, context, callback) => {…} • Handler value in Lambda: index.myHandler
- 9. @rlondner Anatomy of aLambda function (Java) • Handler function in example.Hello class • package example; public class Hello { public String myHandler(type inputVal, Context context) {...} • Handler value in Lambda: example.Hello::myHandler
- 10. @rlondner Anatomy of aLambda function (Python) • Handler function in hello_python.py file • def my_handler(event, context): … return some_value • Handler value in Lambda: hello_python.my_handler
- 11. @rlondner Anatomy of aLambda function (C#) • Handler function in Example.Hello class • Namespace Example; public class Hello { public Stream MyHandler(type inputVal, ILambdaContext context) {...} • Handler format & value in Lambda: • Assembly::Namespace.ClassName::MethodName • HelloWorldApp::Example.Hello::MyHandler
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- 13. @rlondner How to developwith Atlas and Lambda • Sign up for Atlas and create an M0 cluster • Grab your Atlas connection string • Initialize a Node.js project • Import MongoDB Node.js driver (or Mongoose) • AWS SDK for JavaScript if necessary • Write code! (using your Atlas connection string)
- 14. @rlondner How to testand deploy your Lambda • Use the lambda-local NPM package to test locally • Zip your Node.js code with ALL modules • Except aws-sdk if used • Use ‘zip -r archive.zip node_modules/ index.js’ from inside the code folder! • Create your Lambda function and upload your package to AWS Lambda
- 15. @rlondner Best practices • Dbconnection string stored as env. variable • Use –E parameter with lambda-local • Reference it with process.env['MONGODB_ATLAS_URI'] • Encrypt Db connection string in AWS Lambda • Use AWS.KMS() to decrypt() the connection string
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- 18. @rlondner What’s the problem? •AWS Lambda is stateless • DB connections are initialized at every call… • Well, almost… • Lambda containers are alive for 5 minutes • Ways to “cache” resources in Lambda across recent calls
- 19. @rlondner Performance best practices •Declare the db object outside the handler method • Set context.callbackWaitsForEmptyEventLoop = false • Try to re-use the db object if db.serverConfig.isConnected() returns true • Do NOT close the db object!
- 20. @rlondner References • Serverless developmentwith Node.js, AWS Lambda and MongoDB Atlas • Optimizing AWS Lambda performance with MongoDB Atlas and Node.js • Lambda Node.js code sample (callbacks) • Lambda Node.js code sample (promises
- 21. June 20-21, 2017 Chicago,IL Chicago, IL MongoDB World is where the world’s fastest growing database community comes to connect, explore, and learn. Join us for educational, hands-on and deep-dive technical sessions, giving you the tools you need to build and deploy your giant ideas. ● Connect with the fastest-growing database community ● Explore new features, technologies and methodologies with the experts ● Learn how to deploy mission-critical applications at scale Register at mongodbworld.com. Use code RaphaelLondner to get 25% off tickets! Groups of 3 or more get an additional 25% off.
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