driver

func CloseDB ¶

func CloseDB()

CloseDB gracefully closes the database connection pool. This function should be called during application shutdown to ensure all database connections are properly closed and resources are freed. It's typically called using defer in the main function.

func GetDB ¶

func GetDB() *sql.DB

GetDB returns the singleton database connection pool instance. This function provides access to the database connection throughout the application. It returns the same *sql.DB instance that was initialized by InitDB().

Returns:

• *sql.DB: The database connection pool instance, or nil if not initialized

func InitDB ¶

func InitDB()

InitDB initializes the PostgreSQL database connection pool. It reads database configuration from environment variables and establishes a connection with proper error handling and connection validation. This function should be called once during application startup.