{"id":1644,"date":"2020-08-21T11:28:47","date_gmt":"2020-08-21T09:28:47","guid":{"rendered":"https:\/\/blog.besharp.it\/?p=1644"},"modified":"2024-02-02T12:11:08","modified_gmt":"2024-02-02T11:11:08","slug":"how-to-build-a-serverless-backend-with-typescript-nodejs-and-aws-lambda","status":"publish","type":"post","link":"https:\/\/blog.besharp.it\/how-to-build-a-serverless-backend-with-typescript-nodejs-and-aws-lambda\/","title":{"rendered":"How to build a Serverless backend with TypeScript, Node.js, and AWS Lambda."},"content":{"rendered":"\n<p><span style=\"font-weight: 400;\">On <\/span><b>Amazon Web Services<\/b><span style=\"font-weight: 400;\"> the Serverless computational service par excellence remains Lambda, a must-have service when talking about this paradigm.<\/span><\/p>\n\n\n\n<p>AWS Lambda allows you to use computational power without worrying about the management of the underlying servers, patches, software updates, or unexpected machine shutdowns. Using this paradigm, we can focus entirely on our application. <\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">To date, AWS Lambda offers several <\/span><b>runtime engines<\/b><span style=\"font-weight: 400;\">. Anyway, <a aria-label=\"undefined (apri in una nuova scheda)\" href=\"https:\/\/blog.besharp.it\/en\/how-to-run-any-programming-language-on-aws-lambda-custom-runtimes\/\" target=\"_blank\" rel=\"noreferrer noopener\">it is possible to create your own if you need to use a programming language not yet supported by AWS<\/a>.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">The great aspect is: it\u2019s up to us to choose the technology that best fits our needs when writing AWS Lambda Functions (FaaS): we can choose the programming language we are most familiar with, allowing us to <\/span><b>reach our goals faster<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">In this article, we will cover <\/span><b>how to develop a serverless backend quickly and effectively using TypeScript as a programming language<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">The application will leverage Express, a web application framework used for developing web services for Node.js. <\/span><b>Node.js<\/b><span style=\"font-weight: 400;\"> is the runtime environment &#8211; already supported by AWS &#8211; in which our TypeScript code, compiled in JavaScript, will run on, on Lambda.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">After the Analysis, the proposed solution will be deployed on our AWS account. This project can be consulted and downloaded from <\/span><a href=\"https:\/\/github.com\/besharpsrl\"><span style=\"font-weight: 400;\">GitHub<\/span><\/a><span style=\"font-weight: 400;\">!<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">AWS services involved<\/h2>\n\n\n\n<p>Let&#8217;s start by proposing the <strong>architectural scheme<\/strong> of our Serverless application.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"767\" height=\"578\" src=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/infrastructure_schema_serverless_backend_typescript.png\" alt=\"backend serverless typescript infrastructure schema\" class=\"wp-image-1634\" srcset=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/infrastructure_schema_serverless_backend_typescript.png 767w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/infrastructure_schema_serverless_backend_typescript-398x300.png 398w\" sizes=\"(max-width: 767px) 100vw, 767px\" \/><\/figure><\/div>\n\n\n<p><span style=\"font-weight: 400;\">The code will be released on an AWS Lambda function, whose invocation will only be possible through an API Gateway.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Obviously, a Data Source cannot be missing in a backend application. As we aim to take full advantage of the Serverless paradigm, Aurora Serverless will be involved as a relational database to save and retrieve our data.<\/span><\/p>\n\n\n\n<p>In summary, we are going to use the following cloud services:<\/p>\n\n\n\n<ul>\n<li>AWS Lambda<\/li>\n\n\n\n<li>API Gateway<\/li>\n\n\n\n<li>Aurora Serverless &#8211; Postgres Engine<\/li>\n\n\n\n<li>CloudFormation<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Diving into infrastructure management: the Serverless framework.<\/h2>\n\n\n\n<p>Nowadays, several tools are available for DevOps engineers to efficiently manage infrastructures, for example, the AWS CLI, the console, or one of the frameworks available online, such as Troposphere, Terraform, or AWS SAM.<\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">As explained above, our goal is to build a backend application quickly: that\u2019s why <\/span><b>we chose the Serverless framework<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n\n\n\n<p>Serverless is a framework written in Node.js allowing us to manage the lifecycle of our serverless applications. It supports several Cloud Providers and features. <\/p>\n\n\n\n<p>As for AWS, Serverless will allow us to create and manage the resources we need on our account using the Cloudformation stack.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Requirements<\/h2>\n\n\n\n<p>Before starting to work on the project, the following requirements need to be met:\n<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/nodejs.org\" target=\"_blank\" rel=\"noreferrer noopener\">Node.js installed<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.serverless.com\/framework\/docs\/providers\/aws\/guide\/installation\/\" target=\"_blank\" aria-label=\"undefined (apri in una nuova scheda)\" rel=\"noreferrer noopener\">Serverless framework installed<\/a><\/li>\n\n\n\n<li>AWS CLI correctly configured<\/li>\n\n\n\n<li>Have an Aurora Serverless (Postgres engine) on your AWS account<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">Since we&#8217;re going to write an application in TypeScript, Node.js will be the runtime environment on which we&#8217;re going to run our code, compiled in JavaScript.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">In order to deploy the Cloudformation stack on AWS, it is necessary to have the Serverless framework installed on the machine. To do so, run the<\/span><i><span style=\"font-weight: 400;\"> npm install -g serverless<\/span><\/i><span style=\"font-weight: 400;\"> command, and configure the AWS CLI credentials properly.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Hands on!<\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">At this point we are ready to start: download the project from our GitHub repository and check its structure.<\/span><\/p>\n\n\n\n<p>Let&#8217;s start by cloning the project:<\/p>\n\n\n\n<p><em>git clone <\/em><a href=\"https:\/\/github.com\/besharpsrl\/blog-serverless-backend-nodejs\"><em>https:\/\/github.com\/besharpsrl\/blog-serverless-backend-nodejs<\/em><\/a><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Enter the blog-serverless-backend-nodejs folder and run the <\/span><i><span style=\"font-weight: 400;\">npm install <\/span><\/i><span style=\"font-weight: 400;\">command to install all the necessary dependencies.&nbsp;<\/span><\/p>\n\n\n\n<p>Here are some clarification:<\/p>\n\n\n\n<ul>\n<li><b>aws-sdk<\/b><span style=\"font-weight: 400;\">: Software Development Kit for using AWS services. In our case, I will use it to integrate with Aurora Serverless and to retrieve its login credentials from Secrets Manager.<\/span><\/li>\n\n\n\n<li><b>sequelize<\/b><span style=\"font-weight: 400;\">: widely used and supported ORM for Node.js.<\/span><\/li>\n\n\n\n<li><b>serverless<\/b><span style=\"font-weight: 400;\">: Framework for the creation and management of the Serverless infrastructure.<\/span><\/li>\n\n\n\n<li><b>express<\/b><span style=\"font-weight: 400;\">: Minimal and flexible web application framework for Node.js that offers a series of features for web application development.<\/span><\/li>\n\n\n\n<li><b>tsoa<\/b><span style=\"font-weight: 400;\">: Framework used to write the controllers for the self-generation of Express routes. Thanks to it, it is also possible to generate OpenAPI specs valid for both version 2.0 and 3.0. It also offers automatic management for the validation of the input of our requests, without having to create and maintain boilerplate code.<\/span><\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">You will find all these (and other) utility dependencies in the package.json file. In addition, it contains commands necessary for running and testing our APIs locally, as well as for releasing them on the AWS account.<\/span><\/p>\n\n\n\n<p>By opening the project on your IDE, you will notice a scaffolding similar to the following:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"466\" height=\"1024\" src=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-55-466x1024.png\" alt=\"scaffolding\" class=\"wp-image-1635\" srcset=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-55-466x1024.png 466w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-55-137x300.png 137w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-55.png 512w\" sizes=\"(max-width: 466px) 100vw, 466px\" \/><\/figure><\/div>\n\n\n<p>Let\u2019s dive deep into the application logics.<\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">We are going to describe a very simple use case: <\/span><b>simple REST APIs offering CRUD functions to manage books in a library.<\/b><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">The logic resides under the book directory. Here is defined the tsoa Controller, the Service carrying both the business logic and the <\/span><i><span style=\"font-weight: 400;\">sequelize<\/span><\/i><span style=\"font-weight: 400;\"> models.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">In the <\/span><i><span style=\"font-weight: 400;\">app.ts<\/span><\/i><span style=\"font-weight: 400;\"> file, instead, we will record the Express routes (autogenerated by tsoa starting from the Controllers), and then export a module that will be used as a <\/span><i><span style=\"font-weight: 400;\">handler<\/span><\/i><span style=\"font-weight: 400;\"> for our Lambda function.<\/span><\/p>\n\n\n\n<p>Everything is made possible through the statement:<\/p>\n\n\n\n<p><i><span style=\"font-weight: 400;\">module.exports.handler = sls(app)<\/span><\/i><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Through this command we are invoking a Serverless framework function able to create a wrapper around the Express routes. In this way, the handler of our AWS Lambda function will then know which Express route to route the REST API calls to.<\/span> <\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Finally, we just have to analyze the <\/span><i><span style=\"font-weight: 400;\">serverless.yml file<\/span><\/i><span style=\"font-weight: 400;\">:<\/span><\/p>\n\n\n\n<pre>service: express-serverless\nprovider:\n  name: aws\n  runtime: nodejs12.x\n  region: eu-west-1\n  stage: ${env:NODE_ENV}\n  environment:\n    NODE_ENV: ${env:NODE_ENV}\n  iamRoleStatements:\n    - Effect: 'Allow'\n      Action:\n        - 'secretsmanager:GetSecretValue'\n      Resource:\n        - '*'\n\npackage:\n  exclude:\n    - node_modules\/**\n    - defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" defer\" src\/**\n\nlayers:\n  nodeModules:\n    path: layer\n    compatibleRuntimes:\n      - nodejs12.x\n\n\u2026..\n\nfunctions:\n  app:\n    handler: dist\/app.handler\n    layers:\n      - {Ref: NodeModulesLambdaLayer}\n    events:\n      - http:\n          path: \/api\n          method: ANY\n          cors: true\n      - http:\n          path: \/api\/{proxy+}\n          method: ANY\n          cors: true\n    vpc:\n      securityGroupIds:\n        - {Ref: LambdaSecurityGroup}\n      subnetIds:\n        - \"subnet-1\"\n        - \"subnet-2\"\n        - \"subnet-3\"\n\nplugins:\n  - serverless-offline<\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">Note that in this file all the essential parts of the infrastructure are defined, such as the Cloud Provider on which we are going to deploy our Lambda function, its handler (the module we exported to the <\/span><i><span style=\"font-weight: 400;\">app.ts<\/span><\/i><span style=\"font-weight: 400;\"> file) and the Lambda Layers to attach the function to.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">With this configuration, in fact, we will create a Lambda Layer containing all the node modules. By doing so, we considerably reduce the size of our function, obtaining performance advantages during its execution.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Let\u2019s go ahead: how is the Lambda function invoked? <\/span><b>Through the <\/b><b><i>http events<\/i><\/b><b> defined in the Serverless file! <\/b><span style=\"font-weight: 400;\">This allows the creation of an API Gateway with which it will be possible to call our function.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">The resource with path <\/span><i><span style=\"font-weight: 400;\">\/api\/{proxy+}<\/span><\/i><span style=\"font-weight: 400;\"> will be the one that will proxy the backend routes. We have thus created a single resource on the API Gateway side that allows us to invoke all the REST APIs.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Local testing<\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">Not everyone knows that it is possible to test APIs without necessarily having to release them on AWS Lambda every time you make changes in the source code. That\u2019s the great advantage of the Node.js package called <\/span><b><i>serverless-offline<\/i><\/b><span style=\"font-weight: 400;\">!&nbsp;<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">It is a Serverless plugin that emulates AWS Lambda and API Gateway on your machine allowing you to speed up development activities.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Before you can use it, however, you will need to locally create a <\/span><b>Postgres database<\/b><span style=\"font-weight: 400;\"> and run the Sequelize migrations:<\/span><\/p>\n\n\n\n<p>From the root of the project we execute the command<\/p>\n\n\n\n<pre>docker-compose up -d<\/pre>\n\n\n\n<p>And then:<\/p>\n\n\n\n<pre>npm run migrate-db-local<\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">At this point, we can test APIs. Run the <\/span><i><span style=\"font-weight: 400;\">npm run start<\/span><\/i><span style=\"font-weight: 400;\"> command to compile our TypeScript code in JavaScript and emulate the Lambda via the <\/span><i><span style=\"font-weight: 400;\">serverless-offline<\/span><\/i><span style=\"font-weight: 400;\"> plugin.<\/span><\/p>\n\n\n\n<p>As soon as the command is executed, you should see the following output on the terminal:\n<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"502\" src=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-56-1024x502.png\" alt=\"output\" class=\"wp-image-1637\" srcset=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-56-1024x502.png 1024w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-56-400x196.png 400w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-56-768x377.png 768w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-56.png 1154w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">At this point we are ready to test the API with the tool we are most familiar with (Postman, Curl). For example, using the curl command we can execute the command from the terminal:<\/span>\n\n&nbsp;<\/p>\n\n\n\n<p><em>curl http:\/\/localhost:3000\/dev\/api\/book\/<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Deploy&nbsp;<\/h2>\n\n\n\n<p>Go ahead and take the last step: the application deploy.<\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Running the <\/span><i><span style=\"font-weight: 400;\">npm run deploy-dev<\/span><\/i><span style=\"font-weight: 400;\"> command will start the release process. The first time the following output will appear:<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"755\" src=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-57-1024x755.png\" alt=\"application deploy output \" class=\"wp-image-1639\" srcset=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-57-1024x755.png 1024w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-57-400x295.png 400w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-57-768x566.png 768w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-57-1536x1133.png 1536w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-57.png 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>On the AWS account a Cloudformation stack containing the resources we need has been generated.<\/p>\n\n\n\n<p>By accessing the console, we will find the just-created Lambda function among the list of Lambda functions available\n<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"419\" src=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-58-1024x419.png\" alt=\"lambda function console\" class=\"wp-image-1641\" srcset=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-58-1024x419.png 1024w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-58-400x164.png 400w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-58-768x314.png 768w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-58-1536x628.png 1536w, https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/unnamed-58.png 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Before testing the APIs it is necessary to run the <\/span><i><span style=\"font-weight: 400;\">Sequelize<\/span><\/i><span style=\"font-weight: 400;\"> migrations to create tables on the Aurora Serverless database.<\/span>\n\n<span style=\"font-weight: 400;\">Be sure you are able to connect to the database on AWS. To do this, it will be necessary to create a bastion machine on our AWS account and divert traffic from ours to the bastion.&nbsp;<\/span>\n\n<span style=\"font-weight: 400;\">Use the <\/span><i><span style=\"font-weight: 400;\">sshuttle<\/span><\/i><span style=\"font-weight: 400;\"> command:<\/span>\n\n&nbsp;<\/p>\n\n\n\n<pre>sshuttle --dns -r ubuntu@EC2_BASTION_IP YOUR_VPC_CIDR --ssh-cmd 'ssh -i YOUR_PEM_KEY'<\/pre>\n\n\n\n<p>At this point,launch the migration by running the following command:<\/p>\n\n\n\n<pre>npm run migrate-dev<\/pre>\n\n\n\n<p>Once the migrations on Aurora Serverless are completed, testing the APIs through API Gateway is the only thing left to do. \n<\/p>\n\n\n\n<p>The API Gateway endpoint has already been printed in the output of the npm run deploy-dev command. Let&#8217;s try it:<\/p>\n\n\n\n<p><em>curl https:\/\/sxfd74jes5.execute-api.eu-west-1.amazonaws.com\/dev\/api\/book\/<\/em><\/p>\n\n\n\n<p>The release process of our Serverless infrastructure on the AWS account is completed!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">To conclude, in this article we discussed<\/span><b> how to create a Serverless application on AWS Lambda using Node.js as the runtime engine.<\/b><\/p>\n\n\n\n<p>We decided to write the proposed project with TypeScript to have the advantage of using a transpiled, widely supported, and known language. <\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">The choice of using Node.js as a runtime engine allows for a <\/span><a href=\"https:\/\/blog.besharp.it\/en\/a-comprehensive-analysis-of-aws-lambda-function-optimize-spikes-and-prevent-cold-starts\/\"><b>very limited Cold Start time<\/b><\/a><span style=\"font-weight: 400;\"> as JavaScript is directly interpreted by the underline engine. Moreover, thanks to the configuration used, the source code is separated from the dependencies &#8211; saved on Lambda Layer, instead &#8211; drastically reducing the size of our source and improving startup performance.<\/span><\/p>\n\n\n\n<p>Happy with this solution? \ud83d\ude42 <\/p>\n\n\n\n<p>If you are interested in this topic, keep reading in our serverless section, or check out this resource on <a href=\"https:\/\/www.toptal.com\/express-js\/nodejs-typescript-rest-api-pt-1\" target=\"_blank\" rel=\"noreferrer noopener\">how to build a Node.js\/TypeScript REST API with Express.js<\/a>.<\/p>\n\n\n\n<p>See you in 15 days on #<a href=\"https:\/\/blog.besharp.it\/\">Proud2beCloud<\/a> for a new article!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>On Amazon Web Services the Serverless computational service par excellence remains Lambda, a must-have service when talking about this paradigm. [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":1654,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[478],"tags":[256,396,357,264,388,386,390,398,268,394,392],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to build a Serverless backend with TypeScript, Node.js, and AWS Lambda. - Proud2beCloud Blog<\/title>\n<meta name=\"description\" content=\"In this article, we are developing a serverless backend quickly and effectively using TypeScript as a programming language.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.besharp.it\/how-to-build-a-serverless-backend-with-typescript-nodejs-and-aws-lambda\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Serverless backend with TypeScript, Node.js, and Lambda.\" \/>\n<meta property=\"og:description\" content=\"In this article, we are developing a serverless backend quickly and effectively using TypeScript as a programming language.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.besharp.it\/how-to-build-a-serverless-backend-with-typescript-nodejs-and-aws-lambda\/\" \/>\n<meta property=\"og:site_name\" content=\"Proud2beCloud Blog\" \/>\n<meta property=\"article:published_time\" content=\"2020-08-21T09:28:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-02T11:11:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/facebook-link-image-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Alessandro Bertini\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"A Serverless backend with TypeScript, Node.js, and Lambda.\" \/>\n<meta name=\"twitter:description\" content=\"In this article, we are developing a serverless backend quickly and effectively using TypeScript as a programming language.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/blog.besharp.it\/wp-content\/uploads\/2020\/08\/twitter-shared-link.png\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alessandro Bertini\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.besharp.it\/how-to-build-a-serverless-backend-with-typescript-nodejs-and-aws-lambda\/\",\"url\":\"https:\/\/blog.besharp.it\/how-to-build-a-serverless-backend-with-typescript-nodejs-and-aws-lambda\/\",\"name\":\"How to build a Serverless backend with TypeScript, Node.js, and AWS Lambda. - 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