✨ feat(redis/monitor/oracle/data-viewer): 新增 Redis 实例监控并优化 Oracle 大表预览体验

- 新增 RedisMonitor 面板，展示 QPS、内存、CPU、连接数和键数量趋势图
- 引入 recharts 依赖并补齐监控图表所需前端包与锁文件
- Sidebar 新增 Redis 实例监控入口，TabManager 与 TabData 接入 redis-monitor 页签类型
- RedisCommandEditor 支持多行脚本块解析、选区执行、耗时记录与终端化结果展示
- Oracle 表预览移除自动精确 COUNT(*)，避免打开大表时额外阻塞
- 无筛选整表预览接入 ALL_TABLES.NUM_ROWS 近似总数展示，并拆分近似总数与近似总页数语义

frontend/src/components/RedisMonitor.tsx

@@ -0,0 +1,378 @@
+import React, { useState, useEffect, useRef, useMemo } from 'react';
+import { Card, Row, Col, Statistic, Select, Button, message, Tag, Typography, Tooltip, Spin } from 'antd';
+import { AreaChart, Area, XAxis, YAxis, Tooltip as RechartsTooltip, ResponsiveContainer, CartesianGrid, Legend, LineChart, Line } from 'recharts';
+import {
+  DesktopOutlined,
+  DashboardOutlined,
+  ApiOutlined,
+  HddOutlined,
+  ReloadOutlined,
+  PlayCircleOutlined,
+  PauseCircleOutlined
+} from '@ant-design/icons';
+import { useStore } from '../store';
+import { SavedConnection } from '../types';
+import { RedisGetServerInfo } from '../../wailsjs/go/app/App';
+
+const { Title, Text } = Typography;
+
+interface RedisMonitorProps {
+  connectionId: string;
+  redisDB: number;
+}
+
+// Data point for charts
+interface MetricPoint {
+  time: string;
+  qps: number;
+  memory: number; // in MB
+  memory_rss: number; // in MB
+  clients: number;
+  cpuSys: number;
+  cpuUser: number;
+  hitRate: number;
+  keys: number;
+}
+
+const MAX_HISTORY_POINTS = 60; // Keep up to 60 data points
+
+const RedisMonitor: React.FC<RedisMonitorProps> = ({ connectionId, redisDB }) => {
+  const connections = useStore(state => state.connections);
+  const theme = useStore(state => state.theme);
+  const darkMode = theme === 'dark';
+
+  const [isRunning, setIsRunning] = useState(true);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  
+  const [history, setHistory] = useState<MetricPoint[]>([]);
+  const [currentInfo, setCurrentInfo] = useState<Record<string, string>>({});
+  
+  // Ref to track if component is mounted to prevent state updates after unmount
+  const mountedRef = useRef(true);
+  // Interval ref
+  const intervalRef = useRef<NodeJS.Timeout | null>(null);
+  // Previous ops counter to calculate QPS if instantaneous_ops_per_sec is not enough
+  const prevMetricsRef = useRef({ prevOps: 0, prevTime: 0 });
+
+  const connection = connections.find((c: SavedConnection) => c.id === connectionId);
+
+  const fetchMetrics = async () => {
+    if (!connection) return;
+
+    try {
+      const config = { ...connection.config, redisDB } as any;
+      const res = await RedisGetServerInfo(config);
+      
+      if (!mountedRef.current) return;
+
+      if (!res.success) {
+        setError(res.message || 'Failed to fetch Redis info');
+        return;
+      }
+
+      setError(null);
+      const infoMap = res.data as Record<string, string>;
+      setCurrentInfo(infoMap);
+
+      const now = new Date();
+      const timeStr = now.toLocaleTimeString([], { hour12: false, second: '2-digit' });
+      
+      // Parse values
+      const qps = parseInt(infoMap['instantaneous_ops_per_sec'] || '0', 10);
+      const memBytes = parseInt(infoMap['used_memory'] || '0', 10);
+      const memRssBytes = parseInt(infoMap['used_memory_rss'] || '0', 10);
+      const clients = parseInt(infoMap['connected_clients'] || '0', 10);
+      const cpuSys = parseFloat(infoMap['used_cpu_sys'] || '0');
+      const cpuUser = parseFloat(infoMap['used_cpu_user'] || '0');
+      
+      const hits = parseInt(infoMap['keyspace_hits'] || '0', 10);
+      const misses = parseInt(infoMap['keyspace_misses'] || '0', 10);
+      const hitRate = (hits + misses) > 0 ? (hits / (hits + misses)) * 100 : 0;
+      
+      let keys = 0;
+      Object.keys(infoMap).forEach(k => {
+        if (k.startsWith('db')) {
+          const m = infoMap[k].match(/keys=(\d+)/);
+          if (m) keys += parseInt(m[1], 10);
+        }
+      });
+
+      const point: MetricPoint = {
+        time: timeStr,
+        qps,
+        memory: parseFloat((memBytes / 1024 / 1024).toFixed(2)),
+        memory_rss: parseFloat((memRssBytes / 1024 / 1024).toFixed(2)),
+        clients,
+        cpuSys: parseFloat(cpuSys.toFixed(2)),
+        cpuUser: parseFloat(cpuUser.toFixed(2)),
+        hitRate: parseFloat(hitRate.toFixed(2)),
+        keys
+      };
+
+      setHistory(prev => {
+        const next = [...prev, point];
+        if (next.length > MAX_HISTORY_POINTS) {
+          return next.slice(next.length - MAX_HISTORY_POINTS);
+        }
+        return next;
+      });
+
+      if (loading) setLoading(false);
+
+    } catch (err: any) {
+      if (mountedRef.current) {
+        setError(err.message || 'Unknown error');
+        if (loading) setLoading(false);
+      }
+    }
+  };
+
+  useEffect(() => {
+    mountedRef.current = true;
+    fetchMetrics(); // initial fetch
+    return () => {
+      mountedRef.current = false;
+      if (intervalRef.current) clearInterval(intervalRef.current);
+    };
+  }, []);
+
+  useEffect(() => {
+    if (intervalRef.current) {
+      clearInterval(intervalRef.current);
+    }
+    
+    if (isRunning) {
+      intervalRef.current = setInterval(fetchMetrics, 2000); // 2 second interval
+    }
+    
+    return () => {
+      if (intervalRef.current) clearInterval(intervalRef.current);
+    };
+  }, [isRunning, connectionId, redisDB, connection]);
+
+  if (!connection) {
+    return <div style={{ padding: 20 }}>Connection not found.</div>;
+  }
+
+  // Determine styles for charts based on theme
+  const chartTextColor = darkMode ? 'rgba(255,255,255,0.65)' : 'rgba(0,0,0,0.65)';
+  const chartGridColor = darkMode ? 'rgba(255,255,255,0.1)' : 'rgba(0,0,0,0.1)';
+  const cardBgColor = darkMode ? '#1f1f1f' : '#ffffff';
+  
+  const getFormatMemoryString = (bytes: string) => {
+    const val = parseInt(bytes || '0', 10);
+    if (val > 1024*1024*1024) return (val/1024/1024/1024).toFixed(2) + ' GB';
+    if (val > 1024*1024) return (val/1024/1024).toFixed(2) + ' MB';
+    if (val > 1024) return (val/1024).toFixed(2) + ' KB';
+    return val + ' B';
+  };
+
+  const getUptimeString = (seconds: string) => {
+    const d = parseInt(seconds || '0', 10);
+    if (d < 60) return `${d}s`;
+    if (d < 3600) return `${Math.floor(d/60)}m ${d%60}s`;
+    if (d < 86400) return `${Math.floor(d/3600)}h ${Math.floor((d%3600)/60)}m`;
+    return `${Math.floor(d/86400)}d ${Math.floor((d%86400)/3600)}h`;
+  };
+
+  return (
+    <div style={{ height: '100%', overflow: 'auto', padding: '16px 24px', backgroundColor: darkMode ? '#141414' : '#f0f2f5' }}>
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 20 }}>
+        <div>
+          <Title level={3} style={{ margin: 0, fontWeight: 600 }}>
+            <DashboardOutlined style={{ marginRight: 8, color: '#1677ff' }} />
+            Redis 实例监控
+          </Title>
+          <Text type="secondary">
+            {connection.name} 
+            {currentInfo.redis_version && ` •  Redis ${currentInfo.redis_version}`}
+            {currentInfo.os && ` •  ${currentInfo.os}`}
+          </Text>
+        </div>
+        <div style={{ display: 'flex', gap: 12 }}>
+          {error && <Tag color="error" style={{ height: 32, lineHeight: '30px', fontSize: 13 }}>{error}</Tag>}
+          {loading && !error && <Spin style={{ alignSelf: 'center', marginRight: 16 }} />}
+          
+          <Button 
+            type={isRunning ? "default" : "primary"}
+            icon={isRunning ? <PauseCircleOutlined /> : <PlayCircleOutlined />} 
+            onClick={() => setIsRunning(!isRunning)}
+          >
+            {isRunning ? '暂停刷新' : '恢复刷新'}
+          </Button>
+          <Button icon={<ReloadOutlined />} onClick={fetchMetrics}>
+            立即刷新
+          </Button>
+        </div>
+      </div>
+
+      <Row gutter={[16, 16]}>
+        <Col span={6}>
+          <Card bordered={false} style={{ background: cardBgColor, borderRadius: 8, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}>
+            <Statistic 
+              title={<span style={{ fontWeight: 500 }}><DesktopOutlined /> 已用内存 (Used)</span>}
+              value={getFormatMemoryString(currentInfo.used_memory || '0')}
+              valueStyle={{ color: '#eb2f96', fontWeight: 600 }}
+              suffix={<Text type="secondary" style={{ fontSize: 13, marginLeft: 8 }}>Peak: {getFormatMemoryString(currentInfo.used_memory_peak || '0')}</Text>}
+            />
+          </Card>
+        </Col>
+        <Col span={6}>
+          <Card bordered={false} style={{ background: cardBgColor, borderRadius: 8, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}>
+            <Statistic 
+              title={<span style={{ fontWeight: 500 }}><ApiOutlined /> 客户端数量 (Clients)</span>}
+              value={currentInfo.connected_clients || '0'}
+              valueStyle={{ color: '#1677ff', fontWeight: 600 }}
+              suffix={<Text type="secondary" style={{ fontSize: 13, marginLeft: 8 }}>Blocked: {currentInfo.blocked_clients || '0'}</Text>}
+            />
+          </Card>
+        </Col>
+        <Col span={6}>
+          <Card bordered={false} style={{ background: cardBgColor, borderRadius: 8, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}>
+            <Statistic 
+              title={<span style={{ fontWeight: 500 }}><HddOutlined /> 吞吐量 (OPS)</span>}
+              value={currentInfo.instantaneous_ops_per_sec || '0'}
+              valueStyle={{ color: '#52c41a', fontWeight: 600 }}
+              suffix={<Text type="secondary" style={{ fontSize: 13, marginLeft: 8 }}>cmds/s</Text>}
+            />
+          </Card>
+        </Col>
+        <Col span={6}>
+          <Card bordered={false} style={{ background: cardBgColor, borderRadius: 8, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}>
+            <Statistic 
+              title={<span style={{ fontWeight: 500 }}>启动时长 (Uptime)</span>}
+              value={getUptimeString(currentInfo.uptime_in_seconds || '0')}
+              valueStyle={{ color: '#fa8c16', fontWeight: 600 }}
+              suffix={<Text type="secondary" style={{ fontSize: 13, marginLeft: 8 }}>Days: {currentInfo.uptime_in_days || '0'}</Text>}
+            />
+          </Card>
+        </Col>
+      </Row>
+
+      <Row gutter={[16, 16]} style={{ marginTop: 16 }}>
+        <Col span={12}>
+          <Card 
+            bordered={false} 
+            title="请求吞吐量 (QPS)" 
+            style={{ background: cardBgColor, borderRadius: 8, height: 350, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}
+            styles={{ body: { padding: '16px 16px 0 0', height: 290 } }}
+          >
+            <ResponsiveContainer width="100%" height="100%">
+              <AreaChart data={history} margin={{ top: 10, right: 10, left: 10, bottom: 0 }}>
+                <defs>
+                  <linearGradient id="colorQps" x1="0" y1="0" x2="0" y2="1">
+                    <stop offset="5%" stopColor="#52c41a" stopOpacity={0.3}/>
+                    <stop offset="95%" stopColor="#52c41a" stopOpacity={0}/>
+                  </linearGradient>
+                </defs>
+                <CartesianGrid strokeDasharray="3 3" vertical={false} stroke={chartGridColor} />
+                <XAxis dataKey="time" tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} minTickGap={20} />
+                <YAxis tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} />
+                <RechartsTooltip 
+                  contentStyle={{ backgroundColor: cardBgColor, border: `1px solid ${chartGridColor}`, borderRadius: 6 }}
+                  itemStyle={{ fontWeight: 600 }}
+                />
+                <Area type="monotone" dataKey="qps" name="QPS" stroke="#52c41a" strokeWidth={2} fillOpacity={1} fill="url(#colorQps)" isAnimationActive={false} />
+              </AreaChart>
+            </ResponsiveContainer>
+          </Card>
+        </Col>
+        
+        <Col span={12}>
+          <Card 
+            bordered={false} 
+            title="内存开销 (Memory)" 
+            style={{ background: cardBgColor, borderRadius: 8, height: 350, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}
+            styles={{ body: { padding: '16px 16px 0 0', height: 290 } }}
+          >
+            <ResponsiveContainer width="100%" height="100%">
+              <LineChart data={history} margin={{ top: 10, right: 10, left: 10, bottom: 0 }}>
+                <CartesianGrid strokeDasharray="3 3" vertical={false} stroke={chartGridColor} />
+                <XAxis dataKey="time" tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} minTickGap={20} />
+                <YAxis tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} domain={['auto', 'auto']} />
+                <RechartsTooltip 
+                  contentStyle={{ backgroundColor: cardBgColor, border: `1px solid ${chartGridColor}`, borderRadius: 6 }}
+                  itemStyle={{ fontWeight: 600 }}
+                  formatter={(value: any) => [`${value} MB`]}
+                />
+                <Legend verticalAlign="top" height={36}/>
+                <Line type="monotone" dataKey="memory" name="Used Memory" stroke="#eb2f96" strokeWidth={2} dot={false} isAnimationActive={false} />
+                <Line type="monotone" dataKey="memory_rss" name="RSS Memory" stroke="#722ed1" strokeWidth={2} dot={false} isAnimationActive={false} />
+              </LineChart>
+            </ResponsiveContainer>
+          </Card>
+        </Col>
+      </Row>
+
+      <Row gutter={[16, 16]} style={{ marginTop: 16 }}>
+        <Col span={12}>
+          <Card 
+            bordered={false} 
+            title="CPU 使用率 (CPU Usage)" 
+            style={{ background: cardBgColor, borderRadius: 8, height: 300, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}
+            styles={{ body: { padding: '16px 16px 0 0', height: 240 } }}
+          >
+            <ResponsiveContainer width="100%" height="100%">
+              <LineChart data={history} margin={{ top: 10, right: 10, left: 10, bottom: 0 }}>
+                <CartesianGrid strokeDasharray="3 3" vertical={false} stroke={chartGridColor} />
+                <XAxis dataKey="time" tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} minTickGap={20} />
+                <YAxis tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} />
+                <RechartsTooltip 
+                  contentStyle={{ backgroundColor: cardBgColor, border: `1px solid ${chartGridColor}`, borderRadius: 6 }}
+                  itemStyle={{ fontWeight: 600 }}
+                  formatter={(value: any) => [`${value} s`]}
+                />
+                <Legend verticalAlign="top" height={36}/>
+                <Line type="monotone" dataKey="cpuSys" name="System" stroke="#cf1322" strokeWidth={2} dot={false} isAnimationActive={false} />
+                <Line type="monotone" dataKey="cpuUser" name="User" stroke="#1677ff" strokeWidth={2} dot={false} isAnimationActive={false} />
+              </LineChart>
+            </ResponsiveContainer>
+          </Card>
+        </Col>
+        
+        <Col span={12}>
+          <Card 
+            bordered={false} 
+            title="连接信息 (Clients & Keys)" 
+            style={{ background: cardBgColor, borderRadius: 8, height: 300, boxShadow: '0 1px 2px 0 rgba(0,0,0,0.03)' }}
+            styles={{ body: { padding: '16px 16px 0 0', height: 240 } }}
+          >
+            <ResponsiveContainer width="100%" height="100%">
+              <LineChart data={history} margin={{ top: 10, right: 10, left: 10, bottom: 0 }}>
+                <CartesianGrid strokeDasharray="3 3" vertical={false} stroke={chartGridColor} />
+                <XAxis dataKey="time" tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} minTickGap={20} />
+                <YAxis yAxisId="left" tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} />
+                <YAxis yAxisId="right" orientation="right" tick={{ fill: chartTextColor, fontSize: 12 }} axisLine={false} tickLine={false} />
+                <RechartsTooltip 
+                  contentStyle={{ backgroundColor: cardBgColor, border: `1px solid ${chartGridColor}`, borderRadius: 6 }}
+                  itemStyle={{ fontWeight: 600 }}
+                />
+                <Legend verticalAlign="top" height={36}/>
+                <Line yAxisId="left" type="stepAfter" dataKey="clients" name="Clients" stroke="#1677ff" strokeWidth={2} dot={false} isAnimationActive={false} />
+                <Line yAxisId="right" type="stepAfter" dataKey="keys" name="Total Keys" stroke="#fa8c16" strokeWidth={2} dot={false} isAnimationActive={false} />
+              </LineChart>
+            </ResponsiveContainer>
+          </Card>
+        </Col>
+      </Row>
+
+      <div style={{ marginTop: 24 }}>
+        <Card bordered={false} title="详细服务器参数" style={{ background: cardBgColor, borderRadius: 8 }}>
+          <div style={{ columnCount: 3, columnGap: 40 }}>
+            {['redis_version', 'os', 'arch_bits', 'multiplexing_api', 'gcc_version', 'run_id', 'tcp_port', 'uptime_in_days', 'hz', 'lru_clock', 'role', 'maxmemory_human', 'maxmemory_policy', 'mem_fragmentation_ratio', 'keyspace_hits', 'keyspace_misses', 'total_connections_received'].map(key => (
+              currentInfo[key] ? (
+                <div key={key} style={{ display: 'flex', justifyContent: 'space-between', marginBottom: 8, borderBottom: `1px dashed ${chartGridColor}` }}>
+                  <Text type="secondary">{key}</Text>
+                  <Text strong>{currentInfo[key]}</Text>
+                </div>
+              ) : null
+            ))}
+          </div>
+        </Card>
+      </div>
+    </div>
+  );
+};
+
+export default RedisMonitor;