feat: ✨ add mysql driver

db/driver.go

@@ -2,7 +2,9 @@ package db
 
 import (
 	"context"
+	"database/sql"
 	"log/slog"
+	"time"
 
 	_ "github.com/jackc/pgconn"
 	_ "github.com/jackc/pgx/v5"
@@ -25,3 +27,34 @@ func NewPostgresPool(dataSource string) *pgxpool.Pool {
 	slog.Info("connected to database")
 	return dbPool
 }
+
+const maxOpenDbConn = 10
+const maxIdleDbConn = 5
+const maxDbLifetime = time.Minute * 5
+
+func NewMySQL(dataSource string) (*sql.DB, error) {
+	d, err := sql.Open("mysql", dataSource)
+	if err != nil {
+		slog.Error("error connecting to database", "error", err)
+	}
+
+	d.SetMaxOpenConns(maxOpenDbConn)
+	d.SetMaxIdleConns(maxIdleDbConn)
+	d.SetConnMaxLifetime(maxDbLifetime)
+
+	err = testDB(d)
+	if err != nil {
+		slog.Error("error pinging database", "error", err)
+		return nil, err
+	}
+
+	return d, nil
+}
+
+func testDB(d *sql.DB) error {
+	err := d.Ping()
+	if err != nil {
+		return err
+	}
+	return nil
+}