Azure Cosmos DB Multi-Region Replication With Pulumi Using TypeScript

Introduction

In this solution, we will set up multi-region replication for an Azure Cosmos DB account using Pulumi with TypeScript. Azure Cosmos DB is a globally distributed, multi-model database service designed to provide low latency and high availability. Multi-region replication ensures that your data is replicated across multiple regions, providing redundancy and improving read performance for users across the globe.

The key services involved in this solution are:

• Azure Cosmos DB: A globally distributed database service.
• Pulumi: An Infrastructure as Code (IaC) tool that allows you to define cloud resources using programming languages.
• TypeScript: A statically typed superset of JavaScript used to define the infrastructure resources in Pulumi.

Step-by-Step Explanation

Step 1: Set up Pulumi and Azure Provider

First, we need to set up Pulumi and configure the Azure provider. This involves installing Pulumi, setting up an Azure service principal, and configuring Pulumi to use the Azure provider.

Step 2: Create an Azure Resource Group

We will create an Azure Resource Group to hold our Cosmos DB account and other related resources.

Step 3: Create an Azure Cosmos DB Account

Next, we will create an Azure Cosmos DB account with multi-region replication enabled. We will specify the primary region and additional regions for replication.

Step 4: Create a Cosmos DB Database and Container

We will create a database and a container within the Cosmos DB account to store our data.

Step 5: Configure Multi-Region Replication

Finally, we will configure the Cosmos DB account to replicate data across the specified regions.

Key Points

• Azure Cosmos DB provides global distribution, low latency, and high availability.
• Pulumi allows you to define and manage cloud resources using familiar programming languages.
• Multi-region replication improves data redundancy and read performance.
• TypeScript is used to define the infrastructure resources in Pulumi.

Conclusion

In this solution, we demonstrated how to set up multi-region replication for an Azure Cosmos DB account using Pulumi with TypeScript. By leveraging Pulumi and TypeScript, we can define and manage our cloud infrastructure in a programmatic and scalable manner. Multi-region replication in Cosmos DB ensures that our data is highly available and can be accessed with low latency from different regions across the globe.

Full Code Example

import * as pulumi from "@pulumi/pulumi";
import * as azure from "@pulumi/azure-native";

// Create an Azure Resource Group
const resourceGroup = new azure.resources.ResourceGroup("resourceGroup", {
    resourceGroupName: "myResourceGroup",
    location: "West US",
});

// Create an Azure Cosmos DB Account with multi-region replication
const cosmosDbAccount = new azure.documentdb.DatabaseAccount("cosmosDbAccount", {
    resourceGroupName: resourceGroup.name,
    databaseAccountOfferType: "Standard",
    locations: [
        { locationName: "West US", failoverPriority: 0 },
        { locationName: "East US", failoverPriority: 1 },
    ],
    consistencyPolicy: {
        defaultConsistencyLevel: "Session",
    },
    capabilities: [{ name: "EnableServerless" }],
});

// Create a Cosmos DB SQL Database
const database = new azure.documentdb.SqlResourceSqlDatabase("database", {
    resourceGroupName: resourceGroup.name,
    accountName: cosmosDbAccount.name,
    databaseName: "myDatabase",
    resource: {
        id: "myDatabase",
    },
});

// Create a Cosmos DB SQL Container
const container = new azure.documentdb.SqlResourceSqlContainer("container", {
    resourceGroupName: resourceGroup.name,
    accountName: cosmosDbAccount.name,
    databaseName: database.name,
    containerName: "myContainer",
    resource: {
        id: "myContainer",
        partitionKey: {
            paths: ["/myPartitionKey"],
            kind: "Hash",
        },
    },
    options: {
        throughput: 400,
    },
});

export const resourceGroupName = resourceGroup.name;
export const cosmosDbAccountName = cosmosDbAccount.name;
export const databaseName = database.name;
export const containerName = container.name;