Book Image

Scalable Data Analytics with Azure Data Explorer

By : Jason Myerscough
Book Image

Scalable Data Analytics with Azure Data Explorer

By: Jason Myerscough

Overview of this book

Azure Data Explorer (ADX) enables developers and data scientists to make data-driven business decisions. This book will help you rapidly explore and query your data at scale and secure your ADX clusters. The book begins by introducing you to ADX, its architecture, core features, and benefits. You'll learn how to securely deploy ADX instances and navigate through the ADX Web UI, cover data ingestion, and discover how to query and visualize your data using the powerful Kusto Query Language (KQL). Next, you'll get to grips with KQL operators and functions to efficiently query and explore your data, as well as perform time series analysis and search for anomalies and trends in your data. As you progress through the chapters, you'll explore advanced ADX topics, including deploying your ADX instances using Infrastructure as Code (IaC). The book also shows you how to manage your cluster performance and monthly ADX costs by handling cluster scaling and data retention periods. Finally, you'll understand how to secure your ADX environment by restricting access with best practices for improving your KQL query performance. By the end of this Azure book, you'll be able to securely deploy your own ADX instance, ingest data from multiple sources, rapidly query your data, and produce reports with KQL and Power BI.
Table of Contents (18 chapters)
1
Section 1: Introduction to Azure Data Explorer
5
Section 2: Querying and Visualizing Your Data
11
Section 3: Advanced Azure Data Explorer Topics

Creating ADX clusters with ARM templates

ARM templates are declarative JavaScript Object Notation (JSON) files that we use to define our infrastructure and configuration requirements. There is a lot of debate surrounding the ease of readability of JSON and at the time of writing, Microsoft has a new tool in preview called Bicep, which is similar to Terraform's propriety HashiCorp Configuration Language (HCL). We are not going to compare ARM with Bicep or Terraform; each tool has a purpose and what you choose ultimately depends on your requirements.

It is not possible to cover all aspects of ARM templates in this short chapter, so we will cover the basics to get started.

ARM template structure

As shown in the following code snippet, ARM templates consist of six sections. There is a seventh section called functions, which is rarely used, and I will not cover it here. I have only used the functions section once:

{
    "$schema": "https...