diff --git a/packages/hydrooj/src/handler/contest.ts b/packages/hydrooj/src/handler/contest.ts
index bd74fa0eb..42425bcdc 100644
--- a/packages/hydrooj/src/handler/contest.ts
+++ b/packages/hydrooj/src/handler/contest.ts
@@ -13,7 +13,6 @@ import {
     InvalidTokenError, NotAssignedError, PermissionError, ValidationError,
 } from '../error';
 import { ScoreboardConfig, Tdoc } from '../interface';
-import paginate from '../lib/paginate';
 import { PERM, PRIV, STATUS } from '../model/builtin';
 import * as contest from '../model/contest';
 import * as discussion from '../model/discussion';
@@ -99,7 +98,7 @@ export class ContestListHandler extends Handler {
         const cursor = contest.getMulti(domainId, q).sort({ endAt: -1, beginAt: -1, _id: -1 });
         let qs = rule ? `rule=${rule}` : '';
         if (group) qs += qs ? `&group=${group}` : `group=${group}`;
-        const [tdocs, tpcount] = await paginate<Tdoc>(cursor, page, system.get('pagination.contest'));
+        const [tdocs, tpcount] = await this.paginate(cursor, page, 'contest');
         const tids = [];
         for (const tdoc of tdocs) tids.push(tdoc.docId);
         const tsdict = await contest.getListStatus(domainId, this.user._id, tids);
diff --git a/packages/hydrooj/src/handler/discussion.ts b/packages/hydrooj/src/handler/discussion.ts
index 5c6188667..dcbd07178 100644
--- a/packages/hydrooj/src/handler/discussion.ts
+++ b/packages/hydrooj/src/handler/discussion.ts
@@ -5,13 +5,11 @@ import {
     PermissionError,
 } from '../error';
 import { DiscussionDoc, DiscussionReplyDoc, DiscussionTailReplyDoc } from '../interface';
-import paginate from '../lib/paginate';
 import { PERM, PRIV } from '../model/builtin';
 import * as discussion from '../model/discussion';
 import * as document from '../model/document';
 import message from '../model/message';
 import * as oplog from '../model/oplog';
-import * as system from '../model/system';
 import user from '../model/user';
 import { Handler, param, Types } from '../service/server';
 
@@ -73,10 +71,10 @@ class DiscussionMainHandler extends Handler {
         // Limit to known types
         const parentType = { $in: Object.keys(typeMapper).map((i) => typeMapper[i]) };
         all &&= this.user.hasPerm(PERM.PERM_MOD_BADGE);
-        const [ddocs, dpcount] = await paginate(
+        const [ddocs, dpcount] = await this.paginate(
             discussion.getMulti(domainId, { parentType, ...all ? {} : { hidden: false } }),
             page,
-            system.get('pagination.discussion'),
+            'discussion',
         );
         const udict = await user.getList(domainId, ddocs.map((ddoc) => ddoc.owner));
         const [vndict, vnodes] = await Promise.all([
@@ -100,10 +98,10 @@ class DiscussionNodeHandler extends DiscussionHandler {
         else if (isSafeInteger(parseInt(_name, 10))) name = parseInt(_name, 10);
         else name = _name;
         const hidden = this.user.own(this.vnode) || this.user.hasPerm(PERM.PERM_EDIT_DISCUSSION) ? {} : { hidden: false };
-        const [ddocs, dpcount] = await paginate(
+        const [ddocs, dpcount] = await this.paginate(
             discussion.getMulti(domainId, { parentType: typeMapper[type], parentId: name, ...hidden }),
             page,
-            system.get('pagination.discussion'),
+            'discussion',
         );
         const uids = ddocs.map((ddoc) => ddoc.owner);
         uids.push(this.vnode.owner);
@@ -167,10 +165,10 @@ class DiscussionDetailHandler extends DiscussionHandler {
         const dsdoc = this.user.hasPriv(PRIV.PRIV_USER_PROFILE)
             ? await discussion.getStatus(domainId, did, this.user._id)
             : null;
-        const [drdocs, pcount, drcount] = await paginate(
+        const [drdocs, pcount, drcount] = await this.paginate(
             discussion.getMultiReply(domainId, did),
             page,
-            system.get('pagination.reply'),
+            'reply',
         );
         const uids = [
             ...this.vnode.owner ? [this.vnode.owner] : [],
diff --git a/packages/hydrooj/src/handler/homework.ts b/packages/hydrooj/src/handler/homework.ts
index f3b10e895..e69741c89 100644
--- a/packages/hydrooj/src/handler/homework.ts
+++ b/packages/hydrooj/src/handler/homework.ts
@@ -5,14 +5,12 @@ import { Time } from '@hydrooj/utils/lib/utils';
 import {
     ContestNotFoundError, HomeworkNotLiveError, NotAssignedError, ValidationError,
 } from '../error';
-import { PenaltyRules, Tdoc } from '../interface';
-import paginate from '../lib/paginate';
+import { PenaltyRules } from '../interface';
 import { PERM } from '../model/builtin';
 import * as contest from '../model/contest';
 import * as discussion from '../model/discussion';
 import problem from '../model/problem';
 import record from '../model/record';
-import * as system from '../model/system';
 import user from '../model/user';
 import { Handler, param, Types } from '../service/server';
 import { ContestCodeHandler, ContestScoreboardHandler } from './contest';
@@ -43,7 +41,7 @@ class HomeworkMainHandler extends Handler {
         }).sort({
             penaltySince: -1, endAt: -1, beginAt: -1, _id: -1,
         });
-        const [tdocs, tpcount] = await paginate<Tdoc>(cursor, page, system.get('pagination.contest'));
+        const [tdocs, tpcount] = await this.paginate(cursor, page, 'contest');
         const calendar = [];
         for (const tdoc of tdocs) {
             const cal = { ...tdoc, url: this.url('homework_detail', { tid: tdoc.docId }) };
@@ -83,10 +81,10 @@ class HomeworkDetailHandler extends Handler {
         ]);
         if (tdoc.rule !== 'homework') throw new ContestNotFoundError(domainId, tid);
         // discussion
-        const [ddocs, dpcount, dcount] = await paginate(
+        const [ddocs, dpcount, dcount] = await this.paginate(
             discussion.getMulti(domainId, { parentType: tdoc.docType, parentId: tdoc.docId }),
             page,
-            system.get('pagination.discussion'),
+            'discussion',
         );
         const uids = ddocs.map((ddoc) => ddoc.owner);
         uids.push(tdoc.owner);
diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index 7d19c3cd1..2ffc5c414 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -18,7 +18,6 @@ import {
 import {
     ProblemDoc, ProblemSearchOptions, ProblemStatusDoc, RecordDoc, User,
 } from '../interface';
-import paginate from '../lib/paginate';
 import { PERM, PRIV, STATUS } from '../model/builtin';
 import * as contest from '../model/contest';
 import * as discussion from '../model/discussion';
@@ -854,10 +853,10 @@ export class ProblemSolutionHandler extends ProblemDetailHandler {
             this.checkPerm(PERM.PERM_VIEW_PROBLEM_SOLUTION);
         }
         // eslint-disable-next-line prefer-const
-        let [psdocs, pcount, pscount] = await paginate(
+        let [psdocs, pcount, pscount] = await this.paginate(
             solution.getMulti(domainId, this.pdoc.docId),
             page,
-            system.get('pagination.solution'),
+            'solution',
         );
         if (sid) {
             psdocs = [await solution.get(domainId, sid)];
diff --git a/packages/hydrooj/src/handler/training.ts b/packages/hydrooj/src/handler/training.ts
index 78fcda2b6..803684000 100644
--- a/packages/hydrooj/src/handler/training.ts
+++ b/packages/hydrooj/src/handler/training.ts
@@ -7,7 +7,6 @@ import {
     FileLimitExceededError, FileUploadError, ProblemNotFoundError, ValidationError,
 } from '../error';
 import { Tdoc, TrainingDoc } from '../interface';
-import paginate from '../lib/paginate';
 import { PERM, PRIV, STATUS } from '../model/builtin';
 import * as oplog from '../model/oplog';
 import problem from '../model/problem';
@@ -64,10 +63,10 @@ class TrainingMainHandler extends Handler {
     async get(domainId: string, page = 1) {
         const query: Filter<TrainingDoc> = {};
         await this.ctx.parallel('training/list', query, this);
-        const [tdocs, tpcount] = await paginate(
+        const [tdocs, tpcount] = await this.paginate(
             training.getMulti(domainId),
             page,
-            system.get('pagination.training'),
+            'training',
         );
         const tids: Set<ObjectId> = new Set();
         for (const tdoc of tdocs) tids.add(tdoc.docId);
diff --git a/packages/hydrooj/src/lib/index.ts b/packages/hydrooj/src/lib/index.ts
index 752f9329b..0b836d544 100644
--- a/packages/hydrooj/src/lib/index.ts
+++ b/packages/hydrooj/src/lib/index.ts
@@ -1,6 +1,5 @@
 import './i18n';
 import './mail';
-import './paginate';
 import './hash.hydro';
 import './rank';
 import './ui';
diff --git a/packages/hydrooj/src/service/server.ts b/packages/hydrooj/src/service/server.ts
index c401810ec..44b5573c6 100644
--- a/packages/hydrooj/src/service/server.ts
+++ b/packages/hydrooj/src/service/server.ts
@@ -9,6 +9,7 @@ import Body from 'koa-body';
 import Compress from 'koa-compress';
 import proxy from 'koa-proxies';
 import cache from 'koa-static-cache';
+import type { FindCursor } from 'mongodb';
 import WebSocket from 'ws';
 import { Counter, isClass, parseMemoryMB } from '@hydrooj/utils/lib/utils';
 import { Context, Service } from '../context';
@@ -18,6 +19,7 @@ import {
     PrivilegeError, UserFacingError,
 } from '../error';
 import { DomainDoc } from '../interface';
+import paginate from '../lib/paginate';
 import serializer from '../lib/serializer';
 import { Types } from '../lib/validator';
 import { Logger } from '../logger';
@@ -150,6 +152,10 @@ export class HandlerCommon {
         await opcount.inc(op, id, periodSecs, maxOperations);
     }
 
+    paginate<T>(cursor: FindCursor<T>, page: number, key: string) {
+        return paginate(cursor, page, this.ctx.setting.get(`pagination.${key}`));
+    }
+
     renderTitle(str: string) {
         const name = this.domain?.ui?.name || system.get('server.name');
         if (this.UiContext.extraTitleContent) return `${this.translate(str)} - ${this.UiContext.extraTitleContent} - ${name}`;