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Implement a Serverless JavaScript Node.js Function with an Azure Storage Cache

jeremylikness profile image Jeremy Likness ⚡️ Originally published at Medium Updated on ・2 min read

This article is part of #ServerlessSeptember. You'll find other helpful articles, detailed tutorials, and videos in this all-things-Serverless content collection. New articles are published every day — that's right, every day — from community members and cloud advocates in the month of September.

Find out more about how Microsoft Azure enables your Serverless functions at https://docs.microsoft.com/azure/azure-functions/.

The Azure Functions app is created (see previous article) and ready to host our real code.

Integrate the Code and the Cache

In this episode, a new HTTP endpoint is implemented using an existing Azure Functions app to compute primes. Watch how easy it is to migrate the code to Azure then install a Node.js package for Azure Storage. Finally, use Azure Table Storage to cache the results.

You can view the source code for the sample app and deploy the migrated code directly to Azure with a single-click in the “AWSMigration” GitHub repository.

GitHub logo JeremyLikness / AWSMigration

Migrate from AWS Lambda to Azure Functions

Move AWS Lambda to Azure Functions

This is the source code for the "Moving from Lambda to Azure Functions" video series that demonstrates how to migrate from AWS Lambda to Azure Functions.

🎦 Watch the video series (YouTube playlist)

Quick Start

Free Azure Account Get your Free Azure Account

You can get started quickly with the migrated function. Simply click or tap the "Deploy to Azure" button. Be sure to enter a unique prefix (for example, use your initials or add a sequence). After the deployment is done, you can access and test the function.

Deploy to Azure

To enable the cache, navigate to the storage account after it is created. Click on Tables under Table service then add a table named primes.

The Code

This repository contains code for all related projects.

Source ("Pure") Function

The function itself determines whether a number passed is prime or not. The pure function is available in src\isItAPrime.js

In the next article, we'll take a step back to explore Azure concepts as they relate to our serverless app.

Resources

  1. Create your free Azure account
  2. Azure Table Storage
  3. How to Use Azure Table Storage from Node.js

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