{"id":4084,"date":"2023-11-04T23:14:03","date_gmt":"2023-11-04T23:14:03","guid":{"rendered":"http:\/\/localhost:10003\/building-serverless-applications-with-aws-lambda\/"},"modified":"2023-11-05T05:48:00","modified_gmt":"2023-11-05T05:48:00","slug":"building-serverless-applications-with-aws-lambda","status":"publish","type":"post","link":"http:\/\/localhost:10003\/building-serverless-applications-with-aws-lambda\/","title":{"rendered":"Building serverless applications with AWS Lambda"},"content":{"rendered":"<p>Serverless computing has changed the way developers approach application development and infrastructure management. AWS Lambda is a popular serverless computing platform that allows you to run your code without worrying about managing servers or infrastructure. In this tutorial, we will walk you through the process of building serverless applications with AWS Lambda.<\/p>\n<h2>Prerequisites<\/h2>\n<p>Before starting this tutorial, make sure you have the following:<\/p>\n<ul>\n<li>An AWS account<\/li>\n<li>A code editor<\/li>\n<li>Basic knowledge of programming<\/li>\n<\/ul>\n<h2>Step 1: Create an AWS Lambda function<\/h2>\n<p>The first step in building a serverless application with AWS Lambda is to create a Lambda function. A Lambda function is the code that you want to run in response to an event. Here\u2019s how you can create a Lambda function in the AWS console:<\/p>\n<ol>\n<li>Open the AWS Management Console and navigate to the Lambda service.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCreate Function\u201d button.<\/p>\n<\/li>\n<li>\n<p>Choose the \u201cAuthor from scratch\u201d option.<\/p>\n<\/li>\n<li>\n<p>Provide a name for your function.<\/p>\n<\/li>\n<li>\n<p>Choose a runtime environment. AWS Lambda supports multiple programming languages, including Node.js, Python, Java, and more.<\/p>\n<\/li>\n<li>\n<p>Specify the role that AWS Lambda will use to execute your function. You can either choose an existing role or create a new one.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCreate Function\u201d button.<\/p>\n<\/li>\n<\/ol>\n<p>Once you\u2019ve created your Lambda function, you can start writing the code.<\/p>\n<h2>Step 2: Write your Lambda function code<\/h2>\n<p>To write your Lambda function code, you need to choose the programming language that you want to use. AWS Lambda supports multiple programming languages, including Node.js, Python, Java, and more.<\/p>\n<p>For this tutorial, we will write a simple Node.js function that returns \u201cHello World\u201d when invoked. Here\u2019s the code:<\/p>\n<pre><code class=\"language-js\">exports.handler = async function(event) {\n  return \"Hello World\";\n};\n<\/code><\/pre>\n<p>Save this code in a file named <code>index.js<\/code>. Once you have your code ready, you can upload it to AWS Lambda.<\/p>\n<h2>Step 3: Upload your Lambda function code<\/h2>\n<p>To upload your Lambda function code, follow these steps:<\/p>\n<ol>\n<li>Open the AWS Lambda console and select your function.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCode\u201d tab.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cUpload from\u201d button and choose \u201c.zip file\u201d.<\/p>\n<\/li>\n<li>\n<p>Upload your <code>index.js<\/code> file.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cSave\u201d button.<\/p>\n<\/li>\n<\/ol>\n<h2>Step 4: Test your Lambda function<\/h2>\n<p>Once you\u2019ve uploaded your code, you should test your Lambda function to make sure it\u2019s working correctly. Here\u2019s how you can test your Lambda function:<\/p>\n<ol>\n<li>Open the AWS Lambda console and select your function.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cTest\u201d tab.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cTest\u201d button and provide input data (if required).<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCreate\u201d button.<\/p>\n<\/li>\n<li>\n<p>You should see the output of your function.<\/p>\n<\/li>\n<\/ol>\n<p>If you see the output \u201cHello World\u201d, your Lambda function is working correctly.<\/p>\n<h2>Step 5: Add an API Gateway trigger<\/h2>\n<p>API Gateway is a fully managed service that makes it easy to create, publish, maintain, monitor, and secure APIs. You can use API Gateway to create RESTful APIs that integrate with AWS Lambda.<\/p>\n<p>To add an API Gateway trigger to your AWS Lambda function, follow these steps:<\/p>\n<ol>\n<li>Open the AWS Lambda console and select your function.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cAdd trigger\u201d button.<\/p>\n<\/li>\n<li>\n<p>Choose the \u201cAPI Gateway\u201d option.<\/p>\n<\/li>\n<li>\n<p>Select the \u201cREST API\u201d option.<\/p>\n<\/li>\n<li>\n<p>Choose the security settings for your API.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cAdd\u201d button.<\/p>\n<\/li>\n<\/ol>\n<p>Once you\u2019ve added the API Gateway trigger to your Lambda function, you can test your API.<\/p>\n<h2>Step 6: Test your API<\/h2>\n<p>To test your API, follow these steps:<\/p>\n<ol>\n<li>Open the AWS API Gateway console.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cAPIs\u201d option.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCreate API\u201d button.<\/p>\n<\/li>\n<li>\n<p>Choose the \u201cREST API\u201d option.<\/p>\n<\/li>\n<li>\n<p>Choose the \u201cNew API\u201d option.<\/p>\n<\/li>\n<li>\n<p>Provide a name for your API.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCreate API\u201d button.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cCreate Method\u201d option.<\/p>\n<\/li>\n<li>\n<p>Choose the HTTP method that you want to use, such as GET.<\/p>\n<\/li>\n<li>\n<p>Select the Lambda function that you want to use as the backend.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cSave\u201d button.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cTest\u201d button.<\/p>\n<\/li>\n<li>\n<p>Provide input data (if required).<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cTest\u201d button.<\/p>\n<\/li>\n<li>\n<p>You should see the output of your function.<\/p>\n<\/li>\n<\/ol>\n<p>If you see the output \u201cHello World\u201d, your API is working correctly.<\/p>\n<h2>Step 7: Deploy your API<\/h2>\n<p>Once you\u2019ve tested your API, you should deploy it to make it available to your users. Here\u2019s how you can deploy your API:<\/p>\n<ol>\n<li>Open the AWS API Gateway console.<\/p>\n<\/li>\n<li>\n<p>Select your API.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cActions\u201d button.<\/p>\n<\/li>\n<li>\n<p>Select the \u201cDeploy API\u201d option.<\/p>\n<\/li>\n<li>\n<p>Choose the deployment stage that you want to use.<\/p>\n<\/li>\n<li>\n<p>Click on the \u201cDeploy\u201d button.<\/p>\n<\/li>\n<\/ol>\n<p>Once your API is deployed, you can make requests to it using the API URL.<\/p>\n<h2>Conclusion<\/h2>\n<p>In this tutorial, we\u2019ve walked you through the process of building serverless applications with AWS Lambda. We\u2019ve shown you how to create a Lambda function, upload your code, add an API Gateway trigger, test your API, and deploy your API. With AWS Lambda, you can build serverless applications quickly and easily, without worrying about infrastructure management. We hope this tutorial has been helpful to you, and that you\u2019re excited to start building your own serverless applications with AWS Lambda.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Serverless computing has changed the way developers approach application development and infrastructure management. AWS Lambda is a popular serverless computing platform that allows you to run your code without worrying about managing servers or infrastructure. In this tutorial, we will walk you through the process of building serverless applications with <a href=\"http:\/\/localhost:10003\/building-serverless-applications-with-aws-lambda\/\" class=\"btn btn-link continue-link\">Continue Reading<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[30,1218,821,203,423,1217],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Building serverless applications with AWS Lambda - Pantherax Blogs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/localhost:10003\/building-serverless-applications-with-aws-lambda\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Building serverless applications with AWS Lambda\" \/>\n<meta property=\"og:description\" content=\"Serverless computing has changed the way developers approach application development and infrastructure management. 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