diff --git a/packages/hydrooj/src/handler/status.ts b/packages/hydrooj/src/handler/status.ts
index f19c23a75..17f216820 100644
--- a/packages/hydrooj/src/handler/status.ts
+++ b/packages/hydrooj/src/handler/status.ts
@@ -1,10 +1,6 @@
 import { Context } from '../context';
 import { PRIV } from '../model/builtin';
-import * as DocumentModel from '../model/document';
-import DomainModel from '../model/domain';
-import RecordModel from '../model/record';
 import * as SettingModel from '../model/setting';
-import UserModel from '../model/user';
 import db from '../service/db';
 import { Handler } from '../service/server';
 
@@ -71,45 +67,22 @@ class StatusHandler extends Handler {
     }
 }
 
-class AdminStatusHandler extends Handler {
-    async get() {
-        const record = await RecordModel.stat();
-        const status = await getStatus();
-        const [domainCount, userCount, problemCount, discussionCount, recordCount] = await Promise.all([
-            DomainModel.coll.count(),
-            UserModel.coll.count(),
-            DocumentModel.coll.count({ docType: DocumentModel.TYPE_PROBLEM }),
-            DocumentModel.coll.count({ docType: DocumentModel.TYPE_DISCUSSION }),
-            RecordModel.coll.count(),
-        ]);
-        this.response.body = {
-            record,
-            status,
-            domainCount,
-            userCount,
-            problemCount,
-            discussionCount,
-            recordCount,
-        };
-    }
-}
-
 class StatusUpdateHandler extends Handler {
     async post(args) {
         this.checkPriv(PRIV.PRIV_JUDGE);
         args.type = 'judge';
         args.updateAt = new Date();
-        return coll.updateOne(
+        await coll.updateOne(
             { mid: args.mid, type: 'judge' },
             { $set: args },
             { upsert: true },
         );
+        this.response.body = { ok: 1 };
     }
 }
 
 export async function apply(ctx: Context) {
     ctx.Route('status', '/status', StatusHandler);
-    ctx.Route('status_admin', '/.status', AdminStatusHandler);
     ctx.Route('status_update', '/status/update', StatusUpdateHandler);
     await db.ensureIndexes(coll, { name: 'expire', key: { updateAt: 1 }, expireAfterSeconds: 24 * 2600 });
 }
diff --git a/packages/hydrooj/src/model/record.ts b/packages/hydrooj/src/model/record.ts
index ed9bdbcd1..5386525e4 100644
--- a/packages/hydrooj/src/model/record.ts
+++ b/packages/hydrooj/src/model/record.ts
@@ -62,17 +62,14 @@ export default class RecordModel {
 
     @ArgMethod
     static async stat(domainId?: string) {
-        // INFO:
-        // using .count() for a much better performace
-        // @see https://www.mongodb.com/docs/manual/reference/command/count/
         const [d5min, d1h, day, week, month, year, total] = await Promise.all([
-            RecordModel.coll.find({ _id: { $gte: Time.getObjectID(moment().add(-5, 'minutes')) }, ...domainId ? { domainId } : {} }).count(),
-            RecordModel.coll.find({ _id: { $gte: Time.getObjectID(moment().add(-1, 'hour')) }, ...domainId ? { domainId } : {} }).count(),
-            RecordModel.coll.find({ _id: { $gte: Time.getObjectID(moment().add(-1, 'day')) }, ...domainId ? { domainId } : {} }).count(),
-            RecordModel.coll.find({ _id: { $gte: Time.getObjectID(moment().add(-1, 'week')) }, ...domainId ? { domainId } : {} }).count(),
-            RecordModel.coll.find({ _id: { $gte: Time.getObjectID(moment().add(-1, 'month')) }, ...domainId ? { domainId } : {} }).count(),
-            RecordModel.coll.find({ _id: { $gte: Time.getObjectID(moment().add(-1, 'year')) }, ...domainId ? { domainId } : {} }).count(),
-            RecordModel.coll.find(domainId ? { domainId } : {}).count(),
+            RecordModel.coll.countDocuments({ _id: { $gte: Time.getObjectID(moment().add(-5, 'minutes')) }, ...domainId ? { domainId } : {} }),
+            RecordModel.coll.countDocuments({ _id: { $gte: Time.getObjectID(moment().add(-1, 'hour')) }, ...domainId ? { domainId } : {} }),
+            RecordModel.coll.countDocuments({ _id: { $gte: Time.getObjectID(moment().add(-1, 'day')) }, ...domainId ? { domainId } : {} }),
+            RecordModel.coll.countDocuments({ _id: { $gte: Time.getObjectID(moment().add(-1, 'week')) }, ...domainId ? { domainId } : {} }),
+            RecordModel.coll.countDocuments({ _id: { $gte: Time.getObjectID(moment().add(-1, 'month')) }, ...domainId ? { domainId } : {} }),
+            RecordModel.coll.countDocuments({ _id: { $gte: Time.getObjectID(moment().add(-1, 'year')) }, ...domainId ? { domainId } : {} }),
+            domainId ? RecordModel.coll.countDocuments({ domainId }) : RecordModel.coll.estimatedDocumentCount(),
         ]);
         return {
             d5min, d1h, day, week, month, year, total,
diff --git a/packages/hydrooj/src/service/monitor.ts b/packages/hydrooj/src/service/monitor.ts
index ddb0c90bc..82c240a7c 100644
--- a/packages/hydrooj/src/service/monitor.ts
+++ b/packages/hydrooj/src/service/monitor.ts
@@ -23,11 +23,11 @@ export async function feedback(): Promise<[string, StatusUpdate]> {
     const [mid, $update, inf] = await sysinfo.update();
     const [installId, name, url] = system.getMany(['installid', 'server.name', 'server.url']);
     const [domainCount, userCount, problemCount, discussionCount, recordCount] = await Promise.all([
-        domain.coll.count(),
-        user.coll.count(),
-        document.coll.count({ docType: document.TYPE_PROBLEM }),
-        document.coll.count({ docType: document.TYPE_DISCUSSION }),
-        record.coll.count(),
+        domain.coll.estimatedDocumentCount(),
+        user.coll.estimatedDocumentCount(),
+        document.coll.countDocuments({ docType: document.TYPE_PROBLEM }),
+        document.coll.countDocuments({ docType: document.TYPE_DISCUSSION }),
+        record.coll.estimatedDocumentCount(),
     ]);
     const info: Record<string, any> = {
         mid: mid.toString(),