Configuring Azure Cosmos DB

1. Introduction

Azure Cosmos DB is a globally distributed, multi-model database service designed to provide high availability, scalability, and low latency. It supports various data models, including key-value, document, graph, and column-family.

2. Key Concepts

• **Database**: A container for data items that is used to manage data.
• **Container**: A schema-agnostic container for items (documents, graphs).
• **Item**: The individual data record stored in a container.
• **Throughput**: Measured in Request Units (RU/s), it defines how much capacity you have to read and write data.
• **Consistency Levels**: Defines the trade-off between consistency and availability.

3. Step-by-Step Configuration

const { CosmosClient } = require("@azure/cosmos");

const endpoint = "your_endpoint";
const key = "your_key";
const client = new CosmosClient({ endpoint, key });

async function insertItem() {
    const { container } = await client.database("your_database").container("your_container");
    const newItem = { id: "1", category: "example", value: "Hello, Cosmos DB!" };
    const { resource: createdItem } = await container.items.create(newItem);
    console.log(`Created item with id: ${createdItem.id}`);
}

insertItem();
                

4. Best Practices

• Choose the right partition key to optimize performance.
• Monitor your RU/s usage to avoid throttling.
• Use stored procedures for complex transactions.
• Implement proper indexing to speed up queries.
• Regularly back up your data.

5. FAQ