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Azure Functions offers a range of use cases, such as data processing, integration with other Azure services, API building, and task automation. Within this article we will explore a few examples that demonstrate how Azure Functions can be harnessed to construct serverless applications. Here are some instances of Azure Functions Examples in action –
Example 1: Image Processing
Image processing stands as a prominent use case for Azure Functions. These functions allow for the automatic resizing, cropping, or watermarking of images upon their upload to Azure Blob Storage. Lets’ consider an example where we create an Azure Function using Visual Studio Code.
By selecting the “Azure Functions” template and opting for “JavaScript” as the language we lay the groundwork. With this foundation in place. We establish a function that triggers when a new blob is added to blob storage.
Upon activation the function utilizes a third party library like Sharp to resize the image before saving it to another blob container.
Example 2: Serverless API
Another utilization of Azure Functions resides in constructing serverless APIs. These functions can be leveraged to build RESTful APIs that other applications or services can employ. To illustrate this point further lets craft a straightforward serverless API using Visual Studio Code.
After choosing the “Azure Functions” template and selecting “C#” as our language of choice we introduce a function triggered by an HTTP request. Its inherent purpose revolves around retrieving data from a database and returning it in JSON format. Its’ worth noting that both Azure Cosmos DB and Azure SQL Database serve as viable options for storing data.
Example 3: Automated Tasks
Automation constitutes another valuable function performed by Azure Functions. For instance, these functions enable us to automatically send emails or notifications when specific events transpire. To exemplify this concept tangibly let’s develop an Azure Function responsible for sending an email when a new customer signs up for our service. These examples should serve to illustrate how Azure Functions can be implemented effectively empowering developers to construct serverless applications with remarkable ease and flexibility.
Our initial stride involves creating an entirely fresh Azure Function through Visual Studio Code. Within the array of templates available, our preference lies with “Azure Functions”, while opting for Python as our desired language.This will be directly followed by incorporating an additional function that reacts accordingly once a fresh client registers; this function functions as our trigger mechanism.Succeeding this, we’ll utilize third-party email services such as SendGrid or Mailgun allowing us to forward crucial emails whenever necessary.To activate the newly formed Azure Function during customer sign-up processes, developers possess two reliable options: either opt for Azure Logic Apps or choose Azure Event Grid. Ultimately,
Azure Functions aims to support developers in building serverless applications whilst simplifying task automation.The tool effectively demolishes any underlying concerns pertaining infrastructural management.With diverse application scenarios and support for varying programming languages,Azure Functions establishes a solid solution for developers in constructing flexible and scalable serverless applications.