Added statistics cache

vpn/admin.py

@@ -12,7 +12,7 @@ from django.urls import path, reverse
 from django.http import HttpResponseRedirect
 
 from django.contrib.auth.admin import UserAdmin
-from .models import User, AccessLog, TaskExecutionLog
+from .models import User, AccessLog, TaskExecutionLog, UserStatistics
 from django.utils.timezone import localtime
 from vpn.models import User, ACL, ACLLink
 from vpn.forms import UserForm
@@ -25,6 +25,103 @@ from .server_plugins import (
     OutlineServer,
     OutlineServerAdmin)
 
+@admin.register(UserStatistics)
+class UserStatisticsAdmin(admin.ModelAdmin):
+    list_display = ('user_display', 'server_name', 'link_display', 'total_connections', 'recent_connections', 'max_daily', 'updated_at_display')
+    list_filter = ('server_name', 'updated_at', 'user__username')
+    search_fields = ('user__username', 'server_name', 'acl_link_id')
+    readonly_fields = ('user', 'server_name', 'acl_link_id', 'total_connections', 'recent_connections', 'daily_usage_chart', 'max_daily', 'updated_at')
+    ordering = ('-updated_at', 'user__username', 'server_name')
+    list_per_page = 100
+    
+    fieldsets = (
+        ('Basic Information', {
+            'fields': ('user', 'server_name', 'acl_link_id')
+        }),
+        ('Statistics', {
+            'fields': ('total_connections', 'recent_connections', 'max_daily')
+        }),
+        ('Usage Chart', {
+            'fields': ('daily_usage_chart',)
+        }),
+        ('Metadata', {
+            'fields': ('updated_at',)
+        }),
+    )
+    
+    @admin.display(description='User', ordering='user__username')
+    def user_display(self, obj):
+        return obj.user.username
+    
+    @admin.display(description='Link', ordering='acl_link_id')
+    def link_display(self, obj):
+        if obj.acl_link_id:
+            link_url = f"{EXTERNAL_ADDRESS}/ss/{obj.acl_link_id}#{obj.server_name}"
+            return format_html(
+                '<a href="{}" target="_blank" style="color: #2563eb; text-decoration: none; font-family: monospace;">{}</a>',
+                link_url, obj.acl_link_id[:12] + '...' if len(obj.acl_link_id) > 12 else obj.acl_link_id
+            )
+        return '-'
+    
+    @admin.display(description='Last Updated', ordering='updated_at')
+    def updated_at_display(self, obj):
+        from django.utils import timezone
+        local_time = localtime(obj.updated_at)
+        now = timezone.now()
+        diff = now - obj.updated_at
+        
+        formatted_date = local_time.strftime('%Y-%m-%d %H:%M')
+        
+        # Color coding based on freshness
+        if diff.total_seconds() < 3600:  # Less than 1 hour
+            color = '#16a34a'  # green
+            relative = 'Fresh'
+        elif diff.total_seconds() < 7200:  # Less than 2 hours
+            color = '#eab308'  # yellow
+            relative = f'{int(diff.total_seconds() // 3600)}h ago'
+        else:
+            color = '#dc2626'  # red
+            relative = f'{diff.days}d ago' if diff.days > 0 else f'{int(diff.total_seconds() // 3600)}h ago'
+        
+        return mark_safe(
+            f'<span style="color: {color}; font-weight: bold;">{formatted_date}</span>'
+            f'<br><small style="color: {color};">{relative}</small>'
+        )
+    
+    @admin.display(description='Daily Usage Chart')
+    def daily_usage_chart(self, obj):
+        if not obj.daily_usage:
+            return mark_safe('<span style="color: #9ca3af;">No data</span>')
+        
+        # Create a simple ASCII-style chart
+        max_val = max(obj.daily_usage) if obj.daily_usage else 1
+        chart_html = '<div style="font-family: monospace; background: #f9fafb; padding: 10px; border-radius: 4px;">'
+        chart_html += f'<div style="margin-bottom: 5px; font-size: 12px; color: #6b7280;">Last 30 days (max: {max_val})</div>'
+        
+        # Create bar chart
+        chart_html += '<div style="display: flex; align-items: end; gap: 1px; height: 40px;">'
+        for day_count in obj.daily_usage:
+            if max_val > 0:
+                height_percent = (day_count / max_val) * 100
+            else:
+                height_percent = 0
+            
+            color = '#4ade80' if day_count > 0 else '#e5e7eb'
+            chart_html += f'<div style="background: {color}; width: 3px; height: {height_percent}%; min-height: 2px;" title="{day_count} connections"></div>'
+        
+        chart_html += '</div></div>'
+        return mark_safe(chart_html)
+    
+    def has_add_permission(self, request):
+        return False
+    
+    def has_change_permission(self, request, obj=None):
+        return False
+    
+    def has_delete_permission(self, request, obj=None):
+        return True  # Allow deletion to clear cache
+
+
 @admin.register(TaskExecutionLog)
 class TaskExecutionLogAdmin(admin.ModelAdmin):
     list_display = ('task_name_display', 'action', 'status_display', 'server', 'user', 'execution_time_display', 'created_at')
@@ -34,7 +131,7 @@ class TaskExecutionLogAdmin(admin.ModelAdmin):
     ordering = ('-created_at',)
     list_per_page = 100
     date_hierarchy = 'created_at'
-    actions = ['trigger_full_sync']
+    actions = ['trigger_full_sync', 'trigger_statistics_update']
     
     fieldsets = (
         ('Task Information', {
@@ -72,6 +169,30 @@ class TaskExecutionLogAdmin(admin.ModelAdmin):
     
     trigger_full_sync.short_description = "🔄 Trigger full sync of all servers"
     
+    def trigger_statistics_update(self, request, queryset):
+        """Trigger manual update of user statistics cache"""
+        # This action doesn't require selected items
+        try:
+            from vpn.tasks import update_user_statistics
+            
+            # Start the statistics update task
+            task = update_user_statistics.delay()
+            
+            self.message_user(
+                request,
+                f'User statistics update started successfully. Task ID: {task.id}. Check logs below for progress.',
+                level=messages.SUCCESS
+            )
+            
+        except Exception as e:
+            self.message_user(
+                request,
+                f'Failed to start statistics update: {e}',
+                level=messages.ERROR
+            )
+    
+    trigger_statistics_update.short_description = "📊 Update user statistics cache"
+    
     def get_actions(self, request):
         """Remove default delete action for logs"""
         actions = super().get_actions(request)
@@ -87,6 +208,7 @@ class TaskExecutionLogAdmin(admin.ModelAdmin):
             'sync_server_info': '⚙️ Server Info',
             'sync_user_on_server': '👤 User Sync',
             'cleanup_task_logs': '🧹 Cleanup',
+            'update_user_statistics': '📊 Statistics',
         }
         return task_names.get(obj.task_name, obj.task_name)
     
@@ -131,6 +253,11 @@ class TaskExecutionLogAdmin(admin.ModelAdmin):
                 self.trigger_full_sync(request, None)
                 # Return redirect to prevent AttributeError
                 return redirect(request.get_full_path())
+            elif action == 'trigger_statistics_update':
+                # Call the statistics update action
+                self.trigger_statistics_update(request, None)
+                # Return redirect to prevent AttributeError
+                return redirect(request.get_full_path())
         
         return super().changelist_view(request, extra_context)
 
@@ -896,6 +1023,7 @@ try:
                 'sync_server_info': '⚙️ Sync Server Info',
                 'sync_user_on_server': '👤 Sync User on Server',
                 'cleanup_task_logs': '🧹 Cleanup Old Logs',
+                'update_user_statistics': '📊 Update Statistics',
             }
             return task_names.get(obj.task_name, obj.task_name)
         

vpn/apps.py

@@ -4,4 +4,3 @@ from django.contrib.auth import get_user_model
 class VPN(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
     name = 'vpn'
-

vpn/management/__init__.py

@@ -0,0 +1 @@
+# Django management commands package\n

vpn/management/commands/init_statistics.py

@@ -0,0 +1 @@
+from django.core.management.base import BaseCommand\nfrom django.utils import timezone\nfrom vpn.models import User, ACLLink, UserStatistics\nfrom vpn.tasks import update_user_statistics\n\n\nclass Command(BaseCommand):\n    help = 'Initialize user statistics cache by running the update task'\n    \n    def add_arguments(self, parser):\n        parser.add_argument(\n            '--async',\n            action='store_true',\n            help='Run statistics update as async Celery task (default: sync)',\n        )\n        parser.add_argument(\n            '--force',\n            action='store_true',\n            help='Force update even if statistics already exist',\n        )\n    \n    def handle(self, *args, **options):\n        # Check if statistics already exist\n        existing_stats = UserStatistics.objects.count()\n        \n        if existing_stats > 0 and not options['force']:\n            self.stdout.write(\n                self.style.WARNING(\n                    f'Statistics cache already contains {existing_stats} entries. '\n                    'Use --force to update anyway.'\n                )\n            )\n            return\n        \n        # Check if there are users with ACL links\n        users_with_links = User.objects.filter(acl__isnull=False).distinct().count()\n        total_links = ACLLink.objects.count()\n        \n        self.stdout.write(\n            f'Found {users_with_links} users with {total_links} ACL links total'\n        )\n        \n        if total_links == 0:\n            self.stdout.write(\n                self.style.WARNING('No ACL links found. Nothing to process.')\n            )\n            return\n        \n        if options['async']:\n            # Run as async Celery task\n            try:\n                task = update_user_statistics.delay()\n                self.stdout.write(\n                    self.style.SUCCESS(\n                        f'Statistics update task started. Task ID: {task.id}'\n                    )\n                )\n                self.stdout.write(\n                    'Check admin panel Task Execution Logs for progress.'\n                )\n            except Exception as e:\n                self.stdout.write(\n                    self.style.ERROR(f'Failed to start async task: {e}')\n                )\n        else:\n            # Run synchronously\n            self.stdout.write('Starting synchronous statistics update...')\n            \n            try:\n                # Import and call the task function directly\n                from vpn.tasks import update_user_statistics\n                \n                # Create a mock Celery request object for the task\n                class MockRequest:\n                    id = f'manual-{timezone.now().isoformat()}'\n                    retries = 0\n                \n                # Create mock task instance\n                task_instance = type('MockTask', (), {\n                    'request': MockRequest(),\n                })()\n                \n                # Call the task function directly\n                result = update_user_statistics(task_instance)\n                \n                self.stdout.write(\n                    self.style.SUCCESS(f'Statistics update completed: {result}')\n                )\n                \n                # Show summary\n                final_stats = UserStatistics.objects.count()\n                self.stdout.write(\n                    self.style.SUCCESS(\n                        f'Statistics cache now contains {final_stats} entries'\n                    )\n                )\n                \n            except Exception as e:\n                self.stdout.write(\n                    self.style.ERROR(f'Statistics update failed: {e}')\n                )\n                import traceback\n                self.stdout.write(traceback.format_exc())\n

vpn/migrations/0005_userstatistics.py

@@ -0,0 +1,45 @@
+# Generated migration for UserStatistics model
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('vpn', '0004_merge_20250721_1223'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='UserStatistics',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('server_name', models.CharField(max_length=256)),
+                ('acl_link_id', models.CharField(blank=True, help_text='None for server-level stats', max_length=1024, null=True)),
+                ('total_connections', models.IntegerField(default=0)),
+                ('recent_connections', models.IntegerField(default=0)),
+                ('daily_usage', models.JSONField(default=list, help_text='Daily connection counts for last 30 days')),
+                ('max_daily', models.IntegerField(default=0)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'User Statistics',
+                'verbose_name_plural': 'User Statistics',
+            },
+        ),
+        migrations.AddIndex(
+            model_name='userstatistics',
+            index=models.Index(fields=['user', 'server_name'], name='vpn_usersta_user_id_1c7cd0_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='userstatistics',
+            index=models.Index(fields=['updated_at'], name='vpn_usersta_updated_8e6e9b_idx'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='userstatistics',
+            unique_together={('user', 'server_name', 'acl_link_id')},
+        ),
+    ]

vpn/models.py

@@ -11,6 +11,31 @@ from django.contrib.auth.models import AbstractUser
 
 logger = logging.getLogger(__name__)
 
+class UserStatistics(models.Model):
+    user = models.ForeignKey('User', on_delete=models.CASCADE)
+    server_name = models.CharField(max_length=256)
+    acl_link_id = models.CharField(max_length=1024, null=True, blank=True, help_text="None for server-level stats")
+    
+    total_connections = models.IntegerField(default=0)
+    recent_connections = models.IntegerField(default=0)
+    daily_usage = models.JSONField(default=list, help_text="Daily connection counts for last 30 days")
+    max_daily = models.IntegerField(default=0)
+    
+    updated_at = models.DateTimeField(auto_now=True)
+    
+    class Meta:
+        unique_together = ['user', 'server_name', 'acl_link_id']
+        verbose_name = 'User Statistics'
+        verbose_name_plural = 'User Statistics'
+        indexes = [
+            models.Index(fields=['user', 'server_name']),
+            models.Index(fields=['updated_at']),
+        ]
+    
+    def __str__(self):
+        link_part = f" (link: {self.acl_link_id})" if self.acl_link_id else " (server total)"
+        return f"{self.user.username} - {self.server_name}{link_part}"
+
 class TaskExecutionLog(models.Model):
     task_id = models.CharField(max_length=255, help_text="Celery task ID")
     task_name = models.CharField(max_length=100, help_text="Task name")

vpn/tasks.py

@@ -215,6 +215,131 @@ def sync_server(self, id):
         create_task_log(task_id, "sync_server_info", "Server sync failed after retries", 'FAILURE', server=server, message=error_message, execution_time=time.time() - start_time)
         return {"error": error_message}
 
+@shared_task(name="update_user_statistics", bind=True, autoretry_for=(Exception,), retry_kwargs={'max_retries': 3, 'countdown': 60})
+def update_user_statistics(self):
+    """Update cached user statistics from AccessLog data"""
+    from .models import User, AccessLog, UserStatistics, ACLLink
+    from django.utils import timezone
+    from datetime import timedelta
+    from django.db.models import Count, Q
+    from django.db import transaction
+    
+    start_time = time.time()
+    task_id = self.request.id
+    
+    create_task_log(task_id, "update_user_statistics", "Starting statistics update", 'STARTED')
+    
+    try:
+        now = timezone.now()
+        thirty_days_ago = now - timedelta(days=30)
+        
+        # Get all users with ACL links
+        users_with_links = User.objects.filter(acl__isnull=False).distinct()
+        total_users = users_with_links.count()
+        
+        create_task_log(task_id, "update_user_statistics", f"Found {total_users} users to process", 'STARTED')
+        logger.info(f"Updating statistics for {total_users} users")
+        
+        updated_count = 0
+        
+        with transaction.atomic():
+            for user in users_with_links:
+                logger.debug(f"Processing user {user.username}")
+                
+                # Get all ACL links for this user
+                acl_links = ACLLink.objects.filter(acl__user=user).select_related('acl__server')
+                
+                for link in acl_links:
+                    server_name = link.acl.server.name
+                    
+                    # Calculate total connections for this server (all time)
+                    total_connections = AccessLog.objects.filter(
+                        user=user.username,
+                        server=server_name,
+                        action='Success'
+                    ).count()
+                    
+                    # Calculate recent connections (last 30 days)
+                    recent_connections = AccessLog.objects.filter(
+                        user=user.username,
+                        server=server_name,
+                        action='Success',
+                        timestamp__gte=thirty_days_ago
+                    ).count()
+                    
+                    # Generate daily usage data for the last 30 days
+                    daily_usage = []
+                    max_daily = 0
+                    
+                    for i in range(30):
+                        day_start = (now - timedelta(days=29-i)).replace(hour=0, minute=0, second=0, microsecond=0)
+                        day_end = day_start + timedelta(days=1)
+                        
+                        day_connections = AccessLog.objects.filter(
+                            user=user.username,
+                            server=server_name,
+                            action='Success',
+                            timestamp__gte=day_start,
+                            timestamp__lt=day_end
+                        ).count()
+                        
+                        daily_usage.append(day_connections)
+                        max_daily = max(max_daily, day_connections)
+                    
+                    # Update or create statistics for this link
+                    stats, created = UserStatistics.objects.update_or_create(
+                        user=user,
+                        server_name=server_name,
+                        acl_link_id=link.link,
+                        defaults={
+                            'total_connections': total_connections,
+                            'recent_connections': recent_connections,
+                            'daily_usage': daily_usage,
+                            'max_daily': max_daily,
+                        }
+                    )
+                    
+                    action = "created" if created else "updated"
+                    logger.debug(f"{action} stats for {user.username} on {server_name} (link: {link.link})")
+                    
+                    updated_count += 1
+                
+                logger.debug(f"Completed processing user {user.username}")
+        
+        success_message = f"Successfully updated statistics for {updated_count} user-server-link combinations"
+        logger.info(success_message)
+        
+        create_task_log(
+            task_id, 
+            "update_user_statistics", 
+            "Statistics update completed", 
+            'SUCCESS', 
+            message=success_message, 
+            execution_time=time.time() - start_time
+        )
+        
+        return success_message
+        
+    except Exception as e:
+        error_message = f"Error updating user statistics: {e}"
+        logger.error(error_message, exc_info=True)
+        
+        if self.request.retries < 3:
+            retry_message = f"Retrying statistics update (attempt {self.request.retries + 1})"
+            logger.info(retry_message)
+            create_task_log(task_id, "update_user_statistics", "Retrying statistics update", 'RETRY', message=retry_message)
+            raise self.retry(countdown=60)
+        
+        create_task_log(
+            task_id, 
+            "update_user_statistics", 
+            "Statistics update failed after retries", 
+            'FAILURE', 
+            message=error_message, 
+            execution_time=time.time() - start_time
+        )
+        raise
+
 @shared_task(name="sync_user_on_server", bind=True, autoretry_for=(Exception,), retry_kwargs={'max_retries': 5, 'countdown': 30})
 def sync_user(self, user_id, server_id):
     from .models import User, ACL

vpn/templates/vpn/user_portal.html

@@ -236,6 +236,22 @@
             flex-wrap: wrap;
         }
 
+        .last-used {
+            color: #9ca3af;
+            font-size: 0.8rem;
+            background: rgba(156, 163, 175, 0.1);
+            padding: 3px 8px;
+            border-radius: 10px;
+            border: 1px solid rgba(156, 163, 175, 0.2);
+            transition: all 0.3s ease;
+        }
+
+        .last-used:hover {
+            background: rgba(156, 163, 175, 0.2);
+            border-color: rgba(156, 163, 175, 0.4);
+            transform: scale(1.05);
+        }
+
         .usage-count {
             color: #9ca3af;
             font-size: 0.8rem;
@@ -451,7 +467,11 @@
                 </div>
             </div>
             <div class="stats-info">
-                <p>📊 Statistics are updated in real-time and show your connection history</p>
+                {% if total_connections == 0 and total_links > 0 %}
+                <p>📊 Statistics cache is empty. Run update in Admin → Task Execution Logs</p>
+                {% else %}
+                <p>📊 Statistics are updated every 3 hours and show your connection history</p>
+                {% endif %}
             </div>
         </div>
 
@@ -492,6 +512,7 @@
                                     <div class="link-stats">
                                         <span class="usage-count">✨ {{ link_data.connections }} uses</span>
                                         <span class="recent-count">📅 {{ link_data.recent_connections }} last 30 days</span>
+                                        <span class="last-used">🕒 {{ link_data.last_access_display }}</span>
                                     </div>
                                 </div>
                                 <div class="usage-chart" data-usage="{{ link_data.daily_usage|join:',' }}" data-max="{{ link_data.max_daily }}">

vpn/views.py

@@ -1,8 +1,8 @@
 def userPortal(request, user_hash):
     """HTML portal for user to view their VPN access links and server information"""
-    from .models import User, ACLLink, AccessLog
+    from .models import User, ACLLink, UserStatistics, AccessLog
     from django.utils import timezone
-    from datetime import datetime, timedelta
+    from datetime import timedelta
     import logging
     
     logger = logging.getLogger(__name__)
@@ -22,24 +22,17 @@ def userPortal(request, user_hash):
         acl_links = ACLLink.objects.filter(acl__user=user).select_related('acl__server', 'acl')
         logger.info(f"Found {acl_links.count()} ACL links for user {user.username}")
         
-        # Calculate date ranges for statistics
-        now = timezone.now()
-        thirty_days_ago = now - timedelta(days=30)
-        logger.debug(f"Calculating stats from {thirty_days_ago} to {now}")
-        
-        # Calculate total connection statistics
-        total_connections = AccessLog.objects.filter(
-            user=user.username,
-            action='Success'
-        ).count()
-        
-        recent_connections = AccessLog.objects.filter(
-            user=user.username,
-            action='Success',
-            timestamp__gte=thirty_days_ago
-        ).count()
-        
-        logger.info(f"User {user.username} stats: total_connections={total_connections}, recent_connections={recent_connections}")
+        # Calculate overall statistics from cached data (only where cache exists)
+        user_stats = UserStatistics.objects.filter(user=user)
+        if user_stats.exists():
+            total_connections = sum(stat.total_connections for stat in user_stats)
+            recent_connections = sum(stat.recent_connections for stat in user_stats)
+            logger.info(f"User {user.username} cached stats: total_connections={total_connections}, recent_connections={recent_connections}")
+        else:
+            # No cache available, set to zero and suggest cache update
+            total_connections = 0
+            recent_connections = 0
+            logger.warning(f"No cached statistics found for user {user.username}. Run statistics update task.")
         
         # Group links by server
         servers_data = {}
@@ -49,7 +42,6 @@ def userPortal(request, user_hash):
             server = link.acl.server
             server_name = server.name
             logger.debug(f"Processing link {link.link} for server {server_name}")
-            logger.debug(f"Link last_access_time: {link.last_access_time}")
             
             if server_name not in servers_data:
                 # Get server status and info
@@ -64,12 +56,12 @@ def userPortal(request, user_hash):
                     server_accessible = False
                     server_error = str(e)
                 
-                # Calculate server-specific connection stats
-                server_total_connections = AccessLog.objects.filter(
-                    user=user.username,
-                    server=server_name,
-                    action='Success'
-                ).count()
+                # Calculate server-level totals from cached stats (only where cache exists)
+                server_stats = user_stats.filter(server_name=server_name)
+                if server_stats.exists():
+                    server_total_connections = sum(stat.total_connections for stat in server_stats)
+                else:
+                    server_total_connections = 0
                 
                 servers_data[server_name] = {
                     'server': server,
@@ -80,45 +72,52 @@ def userPortal(request, user_hash):
                     'server_type': server.server_type,
                     'total_connections': server_total_connections,
                 }
-                logger.debug(f"Created server data for {server_name} with {server_total_connections} connections")
+                logger.debug(f"Created server data for {server_name} with {server_total_connections} cached connections")
             
-            # Calculate link-specific statistics
-            # Note: AccessLog doesn't have link-specific tracking, so we'll use server-based stats
-            link_connections = AccessLog.objects.filter(
-                user=user.username,
-                server=server_name,
-                action='Success'
-            ).count()
+            # Calculate time since last access
+            last_access_display = "Never used"
+            if link.last_access_time:
+                time_diff = timezone.now() - link.last_access_time
+                if time_diff.days > 0:
+                    last_access_display = f"{time_diff.days} days ago"
+                elif time_diff.seconds > 3600:
+                    hours = time_diff.seconds // 3600
+                    last_access_display = f"{hours} hours ago"
+                elif time_diff.seconds > 60:
+                    minutes = time_diff.seconds // 60
+                    last_access_display = f"{minutes} minutes ago"
+                else:
+                    last_access_display = "Just now"
             
-            link_recent_connections = AccessLog.objects.filter(
-                user=user.username,
-                server=server_name,
-                action='Success',
-                timestamp__gte=thirty_days_ago
-            ).count()
-            
-            # Generate daily usage data for the last 30 days
-            daily_usage = []
-            max_daily = 0
-            
-            for i in range(30):
-                day_start = (now - timedelta(days=29-i)).replace(hour=0, minute=0, second=0, microsecond=0)
-                day_end = day_start + timedelta(days=1)
+            # Get cached statistics for this specific link
+            try:
+                link_stats = UserStatistics.objects.get(
+                    user=user,
+                    server_name=server_name,
+                    acl_link_id=link.link
+                )
+                logger.debug(f"Found cached stats for link {link.link}: {link_stats.total_connections} connections, max_daily={link_stats.max_daily}")
                 
-                day_connections = AccessLog.objects.filter(
-                    user=user.username,
-                    server=server_name,
-                    action='Success',
-                    timestamp__gte=day_start,
-                    timestamp__lt=day_end
-                ).count()
+                link_connections = link_stats.total_connections
+                link_recent_connections = link_stats.recent_connections
+                daily_usage = link_stats.daily_usage or []
+                max_daily = link_stats.max_daily
                 
-                daily_usage.append(day_connections)
-                max_daily = max(max_daily, day_connections)
+            except UserStatistics.DoesNotExist:
+                logger.warning(f"No cached stats found for link {link.link} on server {server_name}, using fallback")
+                
+                # Fallback: Since AccessLog doesn't track specific links, show zero for link-specific stats
+                # but keep server-level stats for context
+                link_connections = 0
+                link_recent_connections = 0
+                daily_usage = [0] * 30  # Empty 30-day chart
+                max_daily = 0
+                
+                logger.warning(f"Using zero stats for uncached link {link.link} - AccessLog doesn't track individual links")
             
             logger.debug(f"Link {link.link} stats: connections={link_connections}, recent={link_recent_connections}, max_daily={max_daily}")
             
-            # Add link information with comprehensive statistics
+            # Add link information with statistics
             link_url = f"{EXTERNAL_ADDRESS}/ss/{link.link}#{server_name}"
             
             link_data = {
@@ -126,6 +125,7 @@ def userPortal(request, user_hash):
                 'url': link_url,
                 'comment': link.comment or 'Default',
                 'last_access': link.last_access_time,
+                'last_access_display': last_access_display,
                 'connections': link_connections,
                 'recent_connections': link_recent_connections,
                 'daily_usage': daily_usage,
@@ -152,13 +152,12 @@ def userPortal(request, user_hash):
         
         logger.debug(f"Context prepared with keys: {list(context.keys())}")
         logger.debug(f"Servers in context: {list(servers_data.keys())}")
-        logger.debug(f"Final context values: total_connections={context['total_connections']}, recent_connections={context['recent_connections']}")
         
         # Log sample server data for debugging
         for server_name, server_data in servers_data.items():
             logger.debug(f"Server {server_name}: total_connections={server_data['total_connections']}, links_count={len(server_data['links'])}")
             for i, link_data in enumerate(server_data['links']):
-                logger.debug(f"  Link {i}: connections={link_data['connections']}, recent={link_data['recent_connections']}, daily_usage_len={len(link_data['daily_usage'])}")
+                logger.debug(f"  Link {i}: connections={link_data['connections']}, recent={link_data['recent_connections']}, last_access='{link_data['last_access_display']}'")
         
         return render(request, 'vpn/user_portal.html', context)