Building Dynamic APIs with BoxLang on AWS Lambda for Modern Serverless Applications

Building Dynamic APIs with BoxLang on AWS Lambda for Modern Serverless Applications

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  WELCOME Modernization in Motion Buildinga Dynamic Future! Into the Box 2026
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  • CF /BoxLang user for about 25 yrs • Interests: Site Modelling, Testing, Driving my son to activities dcard@ortussolutions.com Dan Card Senior Developer, Ortus Solutions
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  w w w.i n t o t h e b o x . o rg GET STARTED Creating Your API With BoxLang In AWS Lambda
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  What is Lambda AWSLambda is an event-driven, serverless compute service that allows you to run code without provisioning or managing servers. You simply upload your code, and Lambda handles the infrastructure, scaling, and high availability automatically
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  Comparing the TwoModels Always On Full Computer with OS and whatever you put on it Lambda Deliberately On Or Off Your Code and your code alone “Off by Default” On when it is triggered, it runs, and then turns off
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  The Ripples Fromthose conditions • Financial: You’re charged in seconds or milliseconds, not hours or days • Great for R&D, small / non-revenue projects • Financial: You can’t forget to turn it off • User Experience: Your call to the API, ON A COLD START, is… • The time it takes for the event to register PLUS • The time for the language server to start PLUS • The time for any framework to spin up PLUS • The time for the code to run PLUS • The packet roundtrip time
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  Let’s Break ThatDown The time it takes for the event to register The time for the language server to start The time for any framework to spin up The time for the code to run The packet roundtrip time Negligible and “a wash” Boxlang makes that possible Not using a framework – No Coldbox “A wash” “A wash”
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  ortus.boxlang.runtime.aws.LambdaRunner::handleRequest Main/bx/Lambda.bx:run() ortus.boxlang.runtime.aws.LambdaRunner::handleReq uest AWS Lambda System
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  Let’s Do SomeCode
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  Key “New Stuff” •Gradle • Compiling
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  Key Keys inEvent •queryStringParameters – struct of the URL •Body – the body of the request • Gotcha: Need a Content-Type: application/json •rawPath – The raw path of the request •Headers – a struct of the headers from the request
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  Routing • Almost nomatter what it’s going to call the Lambda.bx run function • Use the x-bx-function=methodName to a different function in the same file • Use Single level path to run another class ( i.e. MyProduct ) run()
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  Complex Routing WithVerbs • router = { • "/user/login.GET":{method:"login",className:"users"}, • "/user/login.POST":{method:"login",className:"users"} • } • var key = ([event.rawPath,event.requestContext.http.method]).toList("."); • var rooter = router.keyExists(key) ? router[key] : ""; • if(rooter.len()){ • var obj = createObject(variables[rooter.className]); • result = obj[rooter.method]( event ); • }