diff --git a/hydro/handler/judge.js b/hydro/handler/judge.js
index 4f6d68695..16b7001c9 100644
--- a/hydro/handler/judge.js
+++ b/hydro/handler/judge.js
@@ -1,14 +1,62 @@
 const
     { requirePerm } = require('./tools'),
+    { sleep } = require('../utils'),
     { PERM_JUDGE } = require('../permission'),
     record = require('../model/record'),
     problem = require('../model/problem'),
     bus = require('../service/bus'),
     queue = require('../service/queue'),
-    { GET, POST } = require('../service/server');
+    { GET, POST, SOCKET } = require('../service/server');
 
 queue.assert('judge');
 
+async function next(body) {
+    let rdoc = await record.get(body.rid);
+    let $set = {};
+    if (body.case) {
+        rdoc.cases.push(body.case);
+        $set.cases = rdoc.cases;
+    }
+    if (body.judge_text) {
+        rdoc.judgeTexts.push(body.judge_text);
+        $set.judgeTexts = rdoc.judgeTexts;
+    }
+    if (body.compiler_text) {
+        rdoc.compilerTexts.push(body.compiler_text);
+        $set.compilerTexts = rdoc.compilerTexts;
+    }
+    if (body.status) $set.status = body.status;
+    if (body.score) $set.score = body.score;
+    if (body.time_ms) $set.time = body.time_ms;
+    if (body.memory_kb) $set.memory = body.memory_kb;
+    rdoc = await record.update(body.rid, $set);
+    bus.publish('record_change', rdoc);
+}
+async function end(body) {
+    let rdoc = await record.get(body.rid);
+    let $set = {};
+    if (body.case) {
+        rdoc.cases.push(body.case);
+        $set.cases = rdoc.cases;
+    }
+    if (body.judge_text) {
+        rdoc.judgeTexts.push(body.judge_text);
+        $set.judgeTexts = rdoc.judgeTexts;
+    }
+    if (body.compiler_text) {
+        rdoc.compilerTexts.push(body.compiler_text);
+        $set.compilerTexts = rdoc.compilerTexts;
+    }
+    if (body.status) $set.status = body.status;
+    if (body.score) $set.score = body.score;
+    if (body.time_ms) $set.time = body.time_ms;
+    if (body.memory_kb) $set.memory = body.memory_kb;
+    $set.judgeAt = new Date();
+    $set.judger = body.judger;
+    rdoc = await record.update(body.rid, $set);
+    bus.publish('record_change', rdoc);
+}
+
 GET('/judge/noop', requirePerm(PERM_JUDGE), async ctx => {
     ctx.body = {};
 });
@@ -29,54 +77,46 @@ GET('/judge/fetch', requirePerm(PERM_JUDGE), async ctx => {
     }
     else ctx.body = {};
 });
+SOCKET('/judge/conn', [requirePerm(PERM_JUDGE)], async conn => {
+    let isOpen = true, processing = null;
+    conn.on('close', async () => {
+        isOpen = false;
+        if (processing) {
+            await record.reset(processing);
+            queue.push('judge', processing);
+        }
+    });
+    conn.on('data', async message => {
+        message = JSON.parse(message);
+        if (message.key == 'next') await next(message);
+        else if (message.key == 'end') {
+            await end(Object.assign({ judger: conn.state.user._id }, message));
+            processing = null;
+        }
+    });
+    while (isOpen) {
+        if (!processing) {
+            let rid = await queue.get('judge');
+            let rdoc = await record.get(rid);
+            let pdoc = await problem.getById(rdoc.pid);
+            let task = {
+                event: 'judge',
+                rid, type: 0,
+                pid: rdoc.pid,
+                data: pdoc.data,
+                lang: rdoc.lang,
+                code: rdoc.code
+            };
+            conn.write(JSON.stringify({ task }));
+            processing = task.rid;
+        } else await sleep(100);
+    }
+});
 POST('/judge/next', requirePerm(PERM_JUDGE), async ctx => {
-    console.log(ctx.request.body);
-    let body = ctx.request.body;
-    let rdoc = await record.get(body.rid);
-    let $set = {};
-    if (body.case) {
-        rdoc.testCases.push(body.case);
-        $set.testCases = rdoc.testCases;
-    }
-    if (body.judge_text) {
-        rdoc.judgeTexts.push(body.judge_text);
-        $set.judgeTexts = rdoc.judgeTexts;
-    }
-    if (body.compiler_text) {
-        rdoc.compilerTexts.push(body.compiler_text);
-        $set.compilerTexts = rdoc.compilerTexts;
-    }
-    if (body.status) $set.status = body.status;
-    if (body.score) $set.score = body.score;
-    if (body.time_ms) $set.time = body.time_ms;
-    if (body.memory_kb) $set.memory = body.memory_kb;
-    rdoc = await record.update(body.rid, $set);
-    bus.publish('record_change', rdoc);
+    await next(ctx.request.body);
     ctx.body = {};
 });
 POST('/judge/end', requirePerm(PERM_JUDGE), async ctx => {
-    let body = ctx.request.body;
-    let rdoc = await record.get(body.rid);
-    let $set = {};
-    if (body.case) {
-        rdoc.testCases.push(body.case);
-        $set.testCases = rdoc.testCases;
-    }
-    if (body.judge_text) {
-        rdoc.judgeTexts.push(body.judge_text);
-        $set.judgeTexts = rdoc.judgeTexts;
-    }
-    if (body.compiler_text) {
-        rdoc.compilerTexts.push(body.compilerTexts);
-        $set.compilerTexts = rdoc.compilerTexts;
-    }
-    if (body.status) $set.status = body.status;
-    if (body.score) $set.score = body.score;
-    if (body.time_ms) $set.time = body.time_ms;
-    if (body.memory_kb) $set.memory = body.memory_kb;
-    $set.judgeAt = new Date();
-    $set.judger = ctx.state.user._id;
-    rdoc = await record.update(body.rid, $set);
-    bus.publish('record_change', rdoc);
+    await end(Object.assign({ judger: ctx.state.user._id }, ctx.request.body));
     ctx.body = {};
 });
diff --git a/hydro/handler/record.js b/hydro/handler/record.js
index 42a5767d2..1bf35fc1c 100644
--- a/hydro/handler/record.js
+++ b/hydro/handler/record.js
@@ -15,7 +15,7 @@ GET('/r', async ctx => {
     ctx.templateName = 'record_main.html';
     let q = {},
         page = ctx.query.page || 1;
-    let rdocs = await record.getMany(q, { rid: 1 }, page, constants.RECORD_PER_PAGE);
+    let rdocs = await record.getMany(q, { _id: -1 }, page, constants.RECORD_PER_PAGE);
     let pdict = {}, udict = {};
     for (let rdoc of rdocs) {
         udict[rdoc.uid] = await user.getById(rdoc.uid);
@@ -39,6 +39,14 @@ SOCKET('/record-conn', [], conn => {
         conn.send({ html: await conn.renderHTML('record_main_tr.html', { rdoc, udoc, pdoc }) });
     }
     bus.subscribe(['record_change'], onRecordChange);
+    conn.on('data', async message => {
+        console.log(message);
+        let { rids } = JSON.parse(message);
+        for (let rid of rids) {
+            let rdoc = await record.get(rid);
+            await onRecordChange({ value: rdoc });
+        }
+    });
     conn.on('close', () => {
         bus.unsubscribe(['record_change'], onRecordChange);
     });
diff --git a/hydro/lib/mail.js b/hydro/lib/mail.js
index aa49cf2f8..64557ef1c 100644
--- a/hydro/lib/mail.js
+++ b/hydro/lib/mail.js
@@ -25,7 +25,7 @@ module.exports = {
      * @param {string} text
      * @param {string} html
      */
-    async send_mail(to, subject, text, html) {
+    async sendMail(to, subject, text, html) {
         let t;
         try {
             t = await new Promise((resolve, reject) => {
diff --git a/templates/record_detail_status.html b/templates/record_detail_status.html
index eda358ed3..de7ad7835 100644
--- a/templates/record_detail_status.html
+++ b/templates/record_detail_status.html
@@ -43,7 +43,7 @@
           <td class="col--status">
             <span class="icon record-status--icon {{ builtin.STATUS_CODES[rcdoc['status']] }}"></span>
             <span class="record-status--text {{ builtin.STATUS_CODES[rcdoc['status']] }}">
-              {{ status.STATUS_TEXTS[rcdoc['status']] }}
+              {{ builtin.STATUS_TEXTS[rcdoc['status']] }}
             </span>
             <span>{{ rcdoc['judgeText'] }}</span>
             <a class="tool-button" href="/wiki/help#status"><span class="icon icon-help"></span></a>
diff --git a/templates/record_main.html b/templates/record_main.html
index cd50d3ac5..c22ca4017 100644
--- a/templates/record_main.html
+++ b/templates/record_main.html
@@ -4,6 +4,9 @@
 <script>
   var Context = {
     'socketUrl': "/record-conn",
+    'rids': [
+        {% for rdoc in rdocs %}"{{ rdoc._id.toString() }}",{% endfor %}
+    ]
   };
 </script>
 <div class="row">
diff --git a/templates/record_main_tr.html b/templates/record_main_tr.html
index 438c6264a..64979d1de 100644
--- a/templates/record_main_tr.html
+++ b/templates/record_main_tr.html
@@ -26,5 +26,5 @@
   <td class="col--time">{% if rdoc['status'] == status.STATUS_TIME_LIMIT_EXCEEDED or rdoc['status'] == status.STATUS_MEMORY_LIMIT_EXCEEDED or rdoc['status'] == status.STATUS_OUTPUT_LIMIT_EXCEEDED %}&ge;{% endif %}{{ rdoc.time }}ms</td>
   <td class="col--memory">{% if rdoc['status'] == status.STATUS_TIME_LIMIT_EXCEEDED or rdoc['status'] == status.STATUS_MEMORY_LIMIT_EXCEEDED or rdoc['status'] == status.STATUS_OUTPUT_LIMIT_EXCEEDED %}&ge;{% endif %}{{ rdoc.memory|format_size(1024) }}</td>
   <td class="col--lang">{{ builtin.LANG_TEXTS[rdoc['lang']] }}</td>
-  <td class="col--submit-at">{{ datetime_span(rdoc['_id'].generationTime)|safe }}</td>
+  <td class="col--submit-at">{{ datetime_span(rdoc['_id'])|safe }}</td>
 </tr>
diff --git a/ui/pages/record_main.page.js b/ui/pages/record_main.page.js
index 4cc75b8cc..54cfff5a5 100644
--- a/ui/pages/record_main.page.js
+++ b/ui/pages/record_main.page.js
@@ -8,6 +8,12 @@ const page = new NamedPage('record_main', async () => {
   const sock = new SockJs(Context.socketUrl);
   const dd = new DiffDOM();
 
+  sock.onopen = () => {
+    sock.send(document.cookie);
+    setTimeout(() => {
+      sock.send(JSON.stringify({ rdocs: Context.rids }));
+    }, 300);
+  };
   sock.onmessage = (message) => {
     const msg = JSON.parse(message.data);
     const $newTr = $(msg.html);