feat: 更新文档和数据库管理逻辑，添加运行模式说明，修复分区表空间设置

src/db/databaseManager.js

@@ -27,7 +27,7 @@ class DatabaseManager {
       });
 
       // 监听连接池错误，防止后端断开导致进程崩溃
-      this.pool.on('error', (err, client) => {
+      this.pool.on('error', (err) => {
         console.error('[db] 发生未捕获的连接池错误:', err);
         // 不抛出，让应用层通过心跳检测发现问题
       });
@@ -213,7 +213,7 @@ class DatabaseManager {
           part_name := heartbeat.partition_name_for_day(p_day);
 
           EXECUTE format(
-            'CREATE TABLE IF NOT EXISTS heartbeat.%I PARTITION OF heartbeat.heartbeat_events FOR VALUES FROM (%s) TO (%s)',
+            'CREATE TABLE IF NOT EXISTS heartbeat.%I PARTITION OF heartbeat.heartbeat_events FOR VALUES FROM (%s) TO (%s) TABLESPACE ts_hot',
             part_name, start_ms, end_ms
           );
         END;
@@ -316,10 +316,21 @@ class DatabaseManager {
 
   getPartitionConfig() {
     const cfg = this.config.partitionMaintenance ?? {};
+    const futureDaysRaw = Number(cfg.futureDays);
+    const intervalHoursRaw = Number(cfg.intervalHours);
+
+    const futureDays = Number.isFinite(futureDaysRaw) && futureDaysRaw > 0
+      ? Math.floor(futureDaysRaw)
+      : 30;
+
+    const intervalHours = Number.isFinite(intervalHoursRaw) && intervalHoursRaw > 0
+      ? intervalHoursRaw
+      : 6;
+
     return {
       enabled: cfg.enabled !== false,
-      futureDays: Number.isFinite(cfg.futureDays) ? cfg.futureDays : 30,
-      intervalHours: Number.isFinite(cfg.intervalHours) ? cfg.intervalHours : 6,
+      futureDays,
+      intervalHours,
     };
   }
 
@@ -490,24 +501,21 @@ class DatabaseManager {
         await this.ensurePartitionsForTsRange(Math.min(...tsValues), Math.max(...tsValues));
       }
 
+      const generateRows = async function* () {
+        for (const e of events) {
+          const rowValues = toRowValues(e);
+          const line = rowValues.map(formatPgCol).join('\t') + '\n';
+          yield line;
+        }
+      };
+
       const client = await this.pool.connect();
       try {
         const copySql = `COPY heartbeat.heartbeat_events (${columns.join(', ')}) FROM STDIN WITH (FORMAT text, DELIMITER E'\\t', NULL '\\N')`;
         const stream = client.query(copyFrom(copySql));
 
-        // Use a generator to stream rows directly
-        async function* generateRows() {
-          for (const e of events) {
-            const rowValues = toRowValues(e);
-            const line = rowValues.map(formatPgCol).join('\t') + '\n';
-            yield line;
-          }
-        }
-
         await pipeline(Readable.from(generateRows()), stream);
         return { insertedCount: events.length };
-      } catch (error) {
-        throw error;
       } finally {
         client.release();
       }