diff --git a/src/hooks.server.ts b/src/hooks.server.ts
index 9ed28ca..84108ac 100644
--- a/src/hooks.server.ts
+++ b/src/hooks.server.ts
@@ -1,9 +1,11 @@
 import type { Handle } from '@sveltejs/kit'
-import { getConnection } from '$lib/server/database/get_connection'
+import { getPool } from '$lib/server/database/pool';
+import git from '$lib/server/git';
 
 export const handle: Handle = async ({ event, resolve }) => {
-  const pg = getConnection();
+  const pg = getPool;
   event.locals.db = pg;
+  event.locals.git = git;
 
   const result = await resolve(event);
   return result;
diff --git a/src/lib/server/article.ts b/src/lib/server/article_compiler.ts
similarity index 100%
rename from src/lib/server/article.ts
rename to src/lib/server/article_compiler.ts
diff --git a/src/lib/server/database/init.ts b/src/lib/server/data_loader.ts
similarity index 53%
rename from src/lib/server/database/init.ts
rename to src/lib/server/data_loader.ts
index b96b31e..a050696 100644
--- a/src/lib/server/database/init.ts
+++ b/src/lib/server/data_loader.ts
@@ -1,90 +1,21 @@
-// initialize
-import type { Postgres } from '$lib/server/database';
+import type { Postgres } from '$lib/server/database/postgres';
+import type { SimpleGit } from 'simple-git';
 import fs from 'fs';
-import compile from '$lib/server/article';
-import article_git from '$lib/server/aritcle-git';
-
+import compile from '$lib/server/article_compiler';
+import type { TableSchema } from '$lib/server/database/table';
+import server_table from '$lib/server/database/table';
 import { format } from '$lib/scripts/formatted_date';
 
-export default async function init(db: Postgres) {
-  await cloneRepo();
-  await createTable(db, [
-    {
-      name: 'article',
-      columns: [
-        { name: 'seq', type: 'serial', constraint: 'primary key' },
-        { name: 'id', type: 'text', constraint: 'not null' },
-        { name: 'released_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'updated_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'author', type: 'text', constraint: 'not null' },
-        { name: 'email', type: 'text', constraint: 'not null' },
-        { name: 'title', type: 'text', constraint: 'not null' },
-        { name: 'category', type: 'text', constraint: 'not null' },
-        { name: 'tags', type: 'text[]', constraint: 'not null' },
-        { name: 'image', type: 'text', constraint: '' },
-        { name: 'publish', type: 'text', constraint: 'not null' },
-        { name: 'content', type: 'text', constraint: 'not null' },
-      ],
-    },
-    {
-      name: 'article_comment',
-      columns: [
-        { name: 'id', type: 'serial', constraint: 'primary key' },
-        { name: 'article', type: 'integer', constraint: 'not null' },
-        { name: 'posted_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'content', type: 'text', constraint: 'not null' },
-      ],
-    },
-    {
-      name: 'thread',
-      columns: [
-        { name: 'seq', type: 'serial', constraint: 'primary key' },
-        { name: 'id', type: 'text', constraint: 'not null' },
-        { name: 'title', type: 'text', constraint: 'not null' },
-        { name: 'category', type: 'text', constraint: 'not null' },
-        { name: 'created_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'updated_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'tags', type: 'text[]', constraint: 'not null' },
-        { name: 'content', type: 'text', constraint: 'not null' },
-      ],
-    },
-    {
-      name: 'thread_post',
-      columns: [
-        { name: 'seq', type: 'serial', constraint: 'primary key' },
-        { name: 'thread_id', type: 'integer', constraint: 'not null' },
-        { name: 'title', type: 'text', constraint: 'not null' },
-        { name: 'posted_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'content', type: 'text', constraint: 'not null' },
-      ],
-    },
-    {
-      name: 'thread_comment',
-      columns: [
-        { name: 'id', type: 'serial', constraint: 'primary key' },
-        { name: 'thread', type: 'integer', constraint: 'not null' },
-        { name: 'posted_at', type: 'timestamp', constraint: 'not null' },
-        { name: 'content', type: 'text', constraint: 'not null' },
-      ],
-    },
-    {
-      name: 'tag',
-      columns: [
-        { name: 'seq', type: 'serial', constraint: 'primary key' },
-        { name: 'name', type: 'text', constraint: 'not null' },
-        { name: 'ref_count', type: 'integer', constraint: 'not null' },
-      ],
-    }
-  ]);
-
+const load = async (db: Postgres, git: SimpleGit) => {
   const articleFiles = await crawlArticles(db);
   await db.query('update tag set ref_count = 0');
 
+  await db.begin();
   for (const { path, id } of articleFiles) {
+    await db.savepoint(id);
     console.log(`Processing ${id}...`);
-    await db.begin();
     try {
-      const gitlog = await article_git.log({
+      const gitlog = await git.log({
         file: path.slice(11),
         strictDate: true,
       });
@@ -135,36 +66,38 @@ export default async function init(db: Postgres) {
       }
     } catch (err) {
       console.log(err);
-      await db.rollback();
+      await db.rollbackTo(id);
     } finally {
       console.log('');
-      await db.commit();
+      await db.releaseSavepoint(id);
     }
   }
+  await db.commit();
+}
 
-  await db.release();
+export async function init(db: Postgres, git: SimpleGit) {
+  await createTable(db, server_table);
+  await cloneRepo(git);
+  await load(db, git);
+}
+
+export async function reload(db: Postgres, git: SimpleGit) {
+  await cloneRepo(git);
+  await load(db, git);
 }
 
 type ArticleFileItem = {
   path: string,
   id: string,
 }
-export type TableSchema = {
-  name: string,
-  columns: {
-    name: string,
-    type: string,
-    constraint: string,
-  }[],
-}
 
-const cloneRepo = async () => {
+const cloneRepo = async (git: SimpleGit) => {
   if (fs.existsSync('./articles/')) {
     console.log('Pulling articles from git..');
-    await article_git.pull();
+    await git.pull();
   } else {
     console.log('Cloning articles from git..');
-    await article_git.clone('git@gitea.hareworks.net:Hare/blog-articles.git', 'articles');
+    await git.clone('git@gitea.hareworks.net:Hare/blog-articles.git', 'articles');
   }
 }
 
diff --git a/src/lib/server/database/get_connection.ts b/src/lib/server/database/pool.ts
similarity index 62%
rename from src/lib/server/database/get_connection.ts
rename to src/lib/server/database/pool.ts
index 818b226..ed588bc 100644
--- a/src/lib/server/database/get_connection.ts
+++ b/src/lib/server/database/pool.ts
@@ -12,12 +12,13 @@ const connectionString = `postgres://${PG_USER}:${PG_PASS}@${PG_HOST}:${PG_PORT}
 
 let pool = new Pool({ connectionString });
 
-export const getConnection = () => pool;
+export const getPool = pool;
 
 export const reConnect = async () => {
   pool = new Pool({ connectionString });
 }
 
-import init_db from '$lib/server/database/init';
-import PG from '$lib/server/database';
-await init_db(await PG(pool));
\ No newline at end of file
+import { init as init_data} from '$lib/server/data_loader';
+import PG from '$lib/server/database/postgres';
+import git from '$lib/server/git';
+await init_data(await PG(pool), git);
\ No newline at end of file
diff --git a/src/lib/server/database.ts b/src/lib/server/database/postgres.ts
similarity index 69%
rename from src/lib/server/database.ts
rename to src/lib/server/database/postgres.ts
index cc4d196..e268789 100644
--- a/src/lib/server/database.ts
+++ b/src/lib/server/database/postgres.ts
@@ -24,9 +24,21 @@ export class Postgres {
     await this.client!.query('commit');
   }
 
+  async savepoint(name: string) {
+    await this.client!.query(`savepoint ${name}`);
+  }
+
   async rollback() {
     await this.client!.query('rollback');
   }
+
+  async rollbackTo(name: string) {
+    await this.client!.query(`rollback to ${name}`);
+  }
+
+  async releaseSavepoint(name: string) {
+    await this.client!.query(`release savepoint ${name}`);
+  }
 }
 
 export default async (
diff --git a/src/lib/server/database/table.ts b/src/lib/server/database/table.ts
new file mode 100644
index 0000000..c09d24a
--- /dev/null
+++ b/src/lib/server/database/table.ts
@@ -0,0 +1,77 @@
+export type TableSchema = {
+  name: string,
+  columns: {
+    name: string,
+    type: string,
+    constraint: string,
+  }[],
+}
+
+export default [
+  {
+    name: 'article',
+    columns: [
+      { name: 'seq', type: 'serial', constraint: 'primary key' },
+      { name: 'id', type: 'text', constraint: 'not null' },
+      { name: 'released_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'updated_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'author', type: 'text', constraint: 'not null' },
+      { name: 'email', type: 'text', constraint: 'not null' },
+      { name: 'title', type: 'text', constraint: 'not null' },
+      { name: 'category', type: 'text', constraint: 'not null' },
+      { name: 'tags', type: 'text[]', constraint: 'not null' },
+      { name: 'image', type: 'text', constraint: '' },
+      { name: 'publish', type: 'text', constraint: 'not null' },
+      { name: 'content', type: 'text', constraint: 'not null' },
+    ],
+  },
+  {
+    name: 'article_comment',
+    columns: [
+      { name: 'id', type: 'serial', constraint: 'primary key' },
+      { name: 'article', type: 'integer', constraint: 'not null' },
+      { name: 'posted_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'content', type: 'text', constraint: 'not null' },
+    ],
+  },
+  {
+    name: 'thread',
+    columns: [
+      { name: 'seq', type: 'serial', constraint: 'primary key' },
+      { name: 'id', type: 'text', constraint: 'not null' },
+      { name: 'title', type: 'text', constraint: 'not null' },
+      { name: 'category', type: 'text', constraint: 'not null' },
+      { name: 'created_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'updated_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'tags', type: 'text[]', constraint: 'not null' },
+      { name: 'content', type: 'text', constraint: 'not null' },
+    ],
+  },
+  {
+    name: 'thread_post',
+    columns: [
+      { name: 'seq', type: 'serial', constraint: 'primary key' },
+      { name: 'thread_id', type: 'integer', constraint: 'not null' },
+      { name: 'title', type: 'text', constraint: 'not null' },
+      { name: 'posted_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'content', type: 'text', constraint: 'not null' },
+    ],
+  },
+  {
+    name: 'thread_comment',
+    columns: [
+      { name: 'id', type: 'serial', constraint: 'primary key' },
+      { name: 'thread', type: 'integer', constraint: 'not null' },
+      { name: 'posted_at', type: 'timestamp', constraint: 'not null' },
+      { name: 'content', type: 'text', constraint: 'not null' },
+    ],
+  },
+  {
+    name: 'tag',
+    columns: [
+      { name: 'seq', type: 'serial', constraint: 'primary key' },
+      { name: 'name', type: 'text', constraint: 'not null' },
+      { name: 'ref_count', type: 'integer', constraint: 'not null' },
+    ],
+  }
+] as TableSchema[];
\ No newline at end of file
diff --git a/src/lib/server/aritcle-git.ts b/src/lib/server/git.ts
similarity index 100%
rename from src/lib/server/aritcle-git.ts
rename to src/lib/server/git.ts
diff --git a/src/routes/+page.server.ts b/src/routes/+page.server.ts
index 306e33e..a570d26 100644
--- a/src/routes/+page.server.ts
+++ b/src/routes/+page.server.ts
@@ -1,6 +1,6 @@
 import { error } from '@sveltejs/kit';
 import type { PageServerLoad } from './$types';
-import PG from '$lib/server/database';
+import PG from '$lib/server/database/postgres';
 import { format } from '$lib/scripts/formatted_date';
 
 let data: {
diff --git a/src/routes/api/fetch_articles/+server.ts b/src/routes/api/fetch_articles/+server.ts
index 7b6eea2..80fa33c 100644
--- a/src/routes/api/fetch_articles/+server.ts
+++ b/src/routes/api/fetch_articles/+server.ts
@@ -6,9 +6,9 @@ import {
   TOKEN
 } from '$env/static/private'
 
-import PG from '$lib/server/database';
+import PG from '$lib/server/database/postgres';
 import { building } from '$app/environment';
-import init_db from '$lib/server/database/init';
+import { reload as reload_data } from '$lib/server/data_loader';
 
 export const POST: RequestHandler = async ({ url, locals }) => {
   const token = url.searchParams.get('token');
@@ -17,6 +17,6 @@ export const POST: RequestHandler = async ({ url, locals }) => {
     return error(401, 'Unauthorized');
   }
 
-  if (!building) await init_db(await PG(locals.db));
+  if (!building) await reload_data(await PG(locals.db), locals.git);
   return new Response(String(token));
 };
diff --git a/src/routes/article/[category]/[id]/+page.server.ts b/src/routes/article/[category]/[id]/+page.server.ts
index 54410e4..946403d 100644
--- a/src/routes/article/[category]/[id]/+page.server.ts
+++ b/src/routes/article/[category]/[id]/+page.server.ts
@@ -1,6 +1,6 @@
 import type { Article } from '$lib/article';
 import type { PageServerLoad } from './$types';
-import PG from '$lib/server/database';
+import PG from '$lib/server/database/postgres';
 import { error } from '@sveltejs/kit';
 
 export const load: PageServerLoad = async ({ params, locals }) => {
diff --git a/src/routes/article/[category]/[series]/[id]/+page.server.ts b/src/routes/article/[category]/[series]/[id]/+page.server.ts
index 522fd97..2c1ac33 100644
--- a/src/routes/article/[category]/[series]/[id]/+page.server.ts
+++ b/src/routes/article/[category]/[series]/[id]/+page.server.ts
@@ -1,6 +1,6 @@
 import type { Article } from '$lib/article';
 import type { PageServerLoad } from './$types';
-import PG from '$lib/server/database';
+import PG from '$lib/server/database/postgres';
 import { error } from '@sveltejs/kit';
 
 export const load: PageServerLoad = async ({ params, locals }) => {