Jan 14, 2021 · 11 min read
Web applications are optimized for throughput and latency to service a high number of HTTP requests as quickly as possible. For improved performance, web applications defer the CPU intensive, IO intensive, time-intensive, and scheduled processing workloads to background jobs that run independently of the user interface. These background jobs must function without intervention from the user interface and should not block a synchronous user and system interaction. Offloading slow and compute or memory-intensive activity to background jobs improves web applications' performance and throughput.
Jan 02, 2021 · 10 min read
In many event-driven applications, preserving the sequence of events is essential. For example, an event-driven eCommerce application might have the following states, transitions, and events. A user adds N items to the basket. This action generates the item added event. The user checks out the basket. This action generates the basket checked out event. The user pays for the items. This action generates the payment made event. Inventory decrements the count of available items by N.
Dec 10, 2020 · 6 min read
I discussed how you could use Ansible with Terraform to simplify configuration management in my previous post. If, instead of Terraform, you prefer using Azure Resource Manager (ARM) templates to define the infrastructure and configuration for your project, you can use Ansible for managing parameters that customize each environment by dynamically generating a Resource Manager parameters file. A great thing about using Ansible for your ARM configuration needs is that it includes a suite of modules for interacting with Azure Resource Manager.
Nov 22, 2020 · 7 min read
We all love web badges. You might have spotted many of them in README of repositories, including the repository of my blog, The Cloud Blog. In general, web badges serve two purposes. They are visually appealing. They display key information instantly. If you scroll to my website’s footer section, you will find GitHub and Netlify badges that display the status of the latest build and deployment. I use them to quickly check whether everything is fine with the world without navigating to their dashboards.
Oct 08, 2020 · 6 min read
Open Graph (OG) tags allow you to control what content shows up when you share the webpage on major social media sites such as Facebook, Twitter, and Google. The essential Open Graph properties that you must configure in the <head> section of your webpage are the following. og:title: The title of your webpage. og:image: An image URL displayed as the thumbnail of your webpage when it is shared. The recommended dimension of this image is 1200px X 627 px.
Sep 26, 2020 · 4 min read
With KEDA (Kubernetes-based Event-Driven Autoscaling), you can host Azure Functions on Kubernetes. KEDA allows you to scale pods based on configurable rules that rely on metrics from data sources such as Azure Queue. The Microsoft documentation outlines how you can use the Prometheus scaler to scale HTTP triggered Azure functions. However, it does not discuss the the security of the transport channel in detail. This quick tip will demonstrate how you can expose your HTTP triggered Azure Functions over TLS/SSL (HTTPS endpoint).
Sep 20, 2020 · 15 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 from community members and cloud advocates are published every week from Monday to Thursday through September. Find out more about how Microsoft Azure enables your Serverless functions at https://docs.microsoft.com/azure/azure-functions/. Nov 02,2020: The implementation of validating webhook Azure Function that uses Azure Communication Service is available in the feature/impl-azure-comm-service branch.
Sep 06, 2020 · 8 min read
In this lab, we will create an Azure Logic App that monitors Twitter, analyzes the sentiment of customer tweets with Text Analytics v2 service, and creates incidents in Pager Duty. PagerDuty is an incident management platform that provides reliable notifications, automatic escalations, on-call scheduling, and other functionality to help teams detect and fix problems quickly. This application can help customer service agents react swiftly to customer complaints and avoid brand reputation damages.
Jun 20, 2020 · 17 min read
I want to stretch every dollar that I spend on the cloud. I run a handful of web applications on Heroku, and like everyone else, run a suite of smoke tests and load tests on every release increment in a non-production environment. Load tests are important: they help us not only to understand the limits of our systems but also bring up issues that arise due to concurrency, which often escape the realms of unit tests and integration tests.
Jun 06, 2020 · 6 min read
Azure App Service on Linux has several pre-fabricated Docker images that support applications written in languages such as .NET core, PHP, and Node.js. App Service also supports using your own Docker image to spin up a container for your application. A useful configuration feature of App Service on Linux is the Startup File configuration that you can set as part of configuring the runtime stack. The value that you specify for the configuration overrides the CMD instruction of the Dockerfile that creates the runtime of the application.