fix: optimize console statistics queries to prevent freezing and improve

initialize/migrate/database/02126_system_log_idx.down.sql

@@ -0,0 +1 @@
+DROP INDEX idx_type_date ON system_logs;

initialize/migrate/database/02126_system_log_idx.up.sql

@@ -0,0 +1 @@
+CREATE INDEX idx_type_date ON system_logs (type, date);

internal/logic/admin/console/queryRevenueStatisticsLogic.go

@@ -2,6 +2,7 @@ package console
 
 import (
 	"context"
+	"encoding/json"
 	"os"
 	"strings"
 	"time"
@@ -13,6 +14,9 @@ import (
 	"github.com/pkg/errors"
 )
 
+const consoleRevenueStatisticsCacheKey = "console:revenue_statistics"
+const consoleRevenueStatisticsCacheTTL = 60 * time.Second
+
 type QueryRevenueStatisticsLogic struct {
 	logger.Logger
 	ctx    context.Context
@@ -33,6 +37,15 @@ func (l *QueryRevenueStatisticsLogic) QueryRevenueStatistics() (resp *types.Reve
 		return l.mockRevenueStatistics(), nil
 	}
 
+	// Try cache first
+	cached, cacheErr := l.svcCtx.Redis.Get(l.ctx, consoleRevenueStatisticsCacheKey).Result()
+	if cacheErr == nil && cached != "" {
+		var result types.RevenueStatisticsResponse
+		if json.Unmarshal([]byte(cached), &result) == nil {
+			return &result, nil
+		}
+	}
+
 	var today, monthly, all types.OrdersStatistics
 	now := time.Now()
 	// Get today's revenue statistics
@@ -111,11 +124,18 @@ func (l *QueryRevenueStatisticsLogic) QueryRevenueStatistics() (resp *types.Reve
 		all.List = allList
 	}
 
-	return &types.RevenueStatisticsResponse{
+	resp = &types.RevenueStatisticsResponse{
 		Today:   today,
 		Monthly: monthly,
 		All:     all,
-	}, nil
+	}
+
+	// Cache the result
+	if data, marshalErr := json.Marshal(resp); marshalErr == nil {
+		l.svcCtx.Redis.Set(l.ctx, consoleRevenueStatisticsCacheKey, data, consoleRevenueStatisticsCacheTTL)
+	}
+
+	return resp, nil
 }
 
 // mockRevenueStatistics is a mock function to simulate revenue statistics data.