hot fix for idle connections

internal/api/errors/errors.go

@@ -2,10 +2,10 @@ package errors
 
 import (
 	"errors"
-	"fmt"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
 )
 
 func ReturnError(err error) error {
@@ -28,8 +28,8 @@ func Return404(c *gin.Context) {
 }
 
 func RaiseInternalErr(c *gin.Context, err error) {
-	intErr := fmt.Errorf("%w: %w", ErrInternalError, err)
-	c.AbortWithStatusJSON(http.StatusInternalServerError, ReturnError(intErr))
+	zap.L().Error("internal server error", zap.Error(err))
+	c.AbortWithStatusJSON(http.StatusInternalServerError, ReturnError(ErrInternalError))
 }
 
 func RaiseBadRequestErr(c *gin.Context, err error) {

internal/db/db.go

@@ -15,6 +15,14 @@ import (
 	"github.com/stackmon/otc-status-dashboard/internal/event"
 )
 
+// Connection pool defaults.
+const (
+	dbMaxOpenConns    = 25
+	dbMaxIdleConns    = 10
+	dbConnMaxLifetime = 5 * time.Minute
+	dbConnMaxIdleTime = 30 * time.Second
+)
+
 type DB struct {
 	g *gorm.DB
 }
@@ -40,6 +48,16 @@ func New(c *conf.Config) (*DB, error) {
 		return nil, err
 	}
 
+	sqlDB, err := g.DB()
+	if err != nil {
+		return nil, fmt.Errorf("getting underlying sql.DB: %w", err)
+	}
+
+	sqlDB.SetMaxOpenConns(dbMaxOpenConns)
+	sqlDB.SetMaxIdleConns(dbMaxIdleConns)
+	sqlDB.SetConnMaxLifetime(dbConnMaxLifetime)
+	sqlDB.SetConnMaxIdleTime(dbConnMaxIdleTime)
+
 	return &DB{g: g}, nil
 }