修改并发逻辑，系统设置增加定时任务并发设置

back/shared/pLimit.ts

@@ -1,17 +1,37 @@
 import pLimit from "p-limit";
 import os from 'os';
+import { AuthDataType, AuthModel } from "../data/auth";
 
-const cpuLimit = pLimit(os.cpus().length);
-const oneLimit = pLimit(1);
+class TaskLimit {
+  private oneLimit = pLimit(1);
+  private cpuLimit = pLimit(Math.max(os.cpus().length, 4));
 
-export function runWithCpuLimit<T>(fn: () => Promise<T>): Promise<T> {
-  return cpuLimit(() => {
-    return fn();
-  });
+  constructor() {
+    this.setCustomLimit();
+  }
+
+  public async setCustomLimit(limit?: number) {
+    if (limit) {
+      this.cpuLimit = pLimit(limit);
+      return;
+    }
+    const doc = await AuthModel.findOne({ where: { type: AuthDataType.systemConfig } });
+    if (doc?.info?.cronConcurrency) {
+      this.cpuLimit = pLimit(doc?.info?.cronConcurrency);
+    }
+  }
+
+  public runWithCpuLimit<T>(fn: () => Promise<T>): Promise<T> {
+    return this.cpuLimit(() => {
+      return fn();
+    });
+  }
+
+  public runOneByOne<T>(fn: () => Promise<T>): Promise<T> {
+    return this.oneLimit(() => {
+      return fn();
+    });
+  }
 }
 
-export function runOneByOne<T>(fn: () => Promise<T>): Promise<T> {
-  return oneLimit(() => {
-    return fn();
-  });
-}
+export default new TaskLimit();