feat: add timestamp index in monitorstatushistory24h table

backend/drizzle/0003_reflective_random.sql

@@ -0,0 +1 @@
+CREATE INDEX `monitor_status_history_24h_timestamp_idx` ON `monitor_status_history_24h` (`timestamp`);

backend/drizzle/meta/_journal.json

@@ -22,6 +22,13 @@
       "when": 1750852918387,
       "tag": "0002_public_domino",
       "breakpoints": true
+    },
+    {
+      "idx": 3,
+      "version": "6",
+      "when": 1751016667916,
+      "tag": "0003_reflective_random",
+      "breakpoints": true
     }
   ]
 }

backend/src/db/generated-migrations.ts

@@ -222,5 +222,9 @@ ALTER TABLE \`agents\` DROP COLUMN \`network_tx\`;`
 CREATE INDEX IF NOT EXISTS \`monitor_daily_stats_monitor_id_date_idx\` ON \`monitor_daily_stats\` (\`monitor_id\`,\`date\`);
 --> statement-breakpoint
 CREATE INDEX IF NOT EXISTS \`monitor_status_history_24h_monitor_timestamp_idx\` ON \`monitor_status_history_24h\` (\`monitor_id\`,\`timestamp\`);`
+  },
+  {
+    name: "0003_reflective_random.sql",
+    sql: `CREATE INDEX IF NOT EXISTS \`monitor_status_history_24h_timestamp_idx\` ON \`monitor_status_history_24h\` (\`timestamp\`);`
   }
 ];

backend/src/db/schema.ts

@@ -42,7 +42,9 @@ export const monitorStatusHistory24h = sqliteTable("monitor_status_history_24h",
   error: text("error")
 }, (table) => ({
   // monitor_id 和 timestamp 的联合索引，用于优化按监控项和时间查询的性能
-  monitorTimestampIdx: index("monitor_status_history_24h_monitor_timestamp_idx").on(table.monitor_id, table.timestamp)
+  monitorTimestampIdx: index("monitor_status_history_24h_monitor_timestamp_idx").on(table.monitor_id, table.timestamp),
+  // timestamp 单独索引，用于优化按时间排序和范围查询的性能
+  timestampIdx: index("monitor_status_history_24h_timestamp_idx").on(table.timestamp)
 }));
 
 // 监控每日统计表