diff --git a/hydro/handler/domain.ts b/hydro/handler/domain.ts
index 1a4f34d93..3e116a2ad 100644
--- a/hydro/handler/domain.ts
+++ b/hydro/handler/domain.ts
@@ -2,7 +2,8 @@ import { RoleAlreadyExistError, ValidationError } from '../error';
 import * as user from '../model/user';
 import * as domain from '../model/domain';
 import { DOMAIN_SETTINGS, DOMAIN_SETTINGS_BY_KEY } from '../model/setting';
-import { PERM, PERMS_BY_FAMILY } from '../model/builtin';
+import { PERM, PERMS_BY_FAMILY, PRIV } from '../model/builtin';
+import { gravatar } from '../lib/misc';
 import paginate from '../lib/paginate';
 import {
     Route, Handler, Types, param,
@@ -180,6 +181,17 @@ class DomainRoleHandler extends ManageHandler {
     }
 }
 
+class DomainSearchHandler extends Handler {
+    @param('q', Types.String)
+    async get(q: string) {
+        const ddocs = await domain.getPrefixSearch(q, 20);
+        for (let i = 0; i < ddocs.length; i++) {
+            ddocs[i].gravatar = ddocs[i].gravatar ? gravatar(ddocs[i].gravatar) : '/img/team_avatar.png';
+        }
+        this.response.body = ddocs;
+    }
+}
+
 export async function apply() {
     Route('ranking', '/ranking', DomainRankHandler);
     Route('domain_dashboard', '/domain/dashboard', DomainDashboardHandler);
@@ -187,6 +199,7 @@ export async function apply() {
     Route('domain_user', '/domain/user', DomainUserHandler);
     Route('domain_permission', '/domain/permission', DomainPermissionHandler);
     Route('domain_role', '/domain/role', DomainRoleHandler);
+    Route('domain_search', '/domain/search', DomainSearchHandler, PRIV.PRIV_USER_PROFILE);
 }
 
 global.Hydro.handler.domain = apply;
diff --git a/hydro/loader.ts b/hydro/loader.ts
index e42a00594..e145170f6 100644
--- a/hydro/loader.ts
+++ b/hydro/loader.ts
@@ -96,9 +96,7 @@ async function executeCommand(input: string) {
 async function messageHandler(worker: cluster.Worker, msg: any) {
     if (!msg) msg = worker;
     if (msg.event) {
-        if (msg.event === 'setAddon') {
-            global.addons = msg.addons;
-        } else if (msg.event === 'bus') {
+        if (msg.event === 'bus') {
             if (cluster.isMaster) {
                 for (const i in cluster.workers) {
                     cluster.workers[i].send(msg);
@@ -165,11 +163,6 @@ process.on('unhandledRejection', (e) => console.error(e));
 process.on('SIGINT', terminate);
 
 export async function load() {
-    while (!global.addons) {
-        await new Promise((resolve) => {
-            setTimeout(resolve, 100);
-        });
-    }
     addon(path.resolve(__dirname, '..'));
     Error.stackTraceLimit = 50;
     process.on('message', messageHandler);
@@ -201,19 +194,22 @@ export async function load() {
         });
         cluster.on('online', (worker) => {
             console.log(`Worker ${worker.process.pid} ${worker.id} is online`);
-            worker.send({ event: 'setAddon', addons: global.addons });
         });
         await startWorker(cnt);
-    } else if (argv.entry) {
-        console.log(`Worker ${process.pid} Starting as ${argv.entry}`);
-        await entry({ entry: argv.entry });
-        console.log(`Worker ${process.pid} Started as ${argv.entry}`);
     } else {
-        if (argv.firstWorker) cluster.isFirstWorker = true;
-        else cluster.isFirstWorker = false;
-        console.log(`Worker ${process.pid} Starting`);
-        await entry({ entry: 'worker' });
-        console.log(`Worker ${process.pid} Started`);
+        global.addons = JSON.parse(Buffer.from(argv.addons as string, 'base64').toString());
+        console.log(global.addons);
+        if (argv.entry) {
+            console.log(`Worker ${process.pid} Starting as ${argv.entry}`);
+            await entry({ entry: argv.entry });
+            console.log(`Worker ${process.pid} Started as ${argv.entry}`);
+        } else {
+            if (argv.firstWorker) cluster.isFirstWorker = true;
+            else cluster.isFirstWorker = false;
+            console.log(`Worker ${process.pid} Starting`);
+            await entry({ entry: 'worker' });
+            console.log(`Worker ${process.pid} Started`);
+        }
     }
     if (global.gc) global.gc();
 }
diff --git a/hydro/model/domain.ts b/hydro/model/domain.ts
index fd1540364..23148e0cb 100644
--- a/hydro/model/domain.ts
+++ b/hydro/model/domain.ts
@@ -142,6 +142,14 @@ export async function getDictUserByDomainId(uid: number) {
     return dudict;
 }
 
+export async function getPrefixSearch(prefix: string, limit = 50) {
+    const $regex = new RegExp(prefix, 'mi');
+    const ddocs = await coll.find({
+        $or: [{ _id: { $regex } }, { name: { $regex } }],
+    }).limit(limit).toArray();
+    return ddocs;
+}
+
 global.Hydro.model.domain = {
     getRoles,
     add,
@@ -161,4 +169,5 @@ global.Hydro.model.domain = {
     incUserInDomain,
     getMultiInDomain,
     getDictUserByDomainId,
+    getPrefixSearch,
 };
diff --git a/package.json b/package.json
index 84e4d8be8..68aadfbde 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hydrooj",
-  "version": "2.9.11",
+  "version": "2.9.12",
   "main": "dist/loader.js",
   "bin": "bin/hydrooj.js",
   "repository": "https://github.com/hydro-dev/Hydro.git",