go integration and wikipedia

backend/internal/db/postgres.go

@@ -0,0 +1,44 @@
+package db
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+var Pool *pgxpool.Pool
+
+func Connect(databaseURL string) error {
+	config, err := pgxpool.ParseConfig(databaseURL)
+	if err != nil {
+		return fmt.Errorf("failed to parse database URL: %w", err)
+	}
+
+	config.MaxConns = 25
+	config.MinConns = 5
+	config.MaxConnLifetime = time.Hour
+	config.MaxConnIdleTime = 30 * time.Minute
+
+	Pool, err = pgxpool.NewWithConfig(context.Background(), config)
+	if err != nil {
+		return fmt.Errorf("failed to create pool: %w", err)
+	}
+
+	if err = Pool.Ping(context.Background()); err != nil {
+		return fmt.Errorf("failed to ping database: %w", err)
+	}
+
+	return nil
+}
+
+func Close() {
+	if Pool != nil {
+		Pool.Close()
+	}
+}
+
+func GetPool() *pgxpool.Pool {
+	return Pool
+}