How to Connect an Express API to Azure Database for PostgreSQL Flexible Server

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A new developer guide walks through provisioning a managed PostgreSQL Flexible Server on Microsoft Azure and linking it to an existing Express.js backend. The tutorial covers configuring firewall and networking rules to allow both local development access and connections from Azure App Service. Developers are shown how to store database credentials securely using environment variables and a .env file kept out of version control. A dedicated db.js module using the Node.js pg driver establishes a connection pool with SSL enabled, as required by Azure PostgreSQL. The setup is verified by a root API endpoint that queries the database's current server time and returns the result as JSON.

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