diff --git a/config.yml b/config.yml
index f63ed72..ba250b2 100644
--- a/config.yml
+++ b/config.yml
@@ -2,4 +2,4 @@ app:
   port: 3000
 
 db:
-  type: mongodb # sqlite or mongodb
\ No newline at end of file
+  type: sqlite # sqlite or mongodb or mysql
\ No newline at end of file
diff --git a/db/index.js b/db/index.js
index cc8adb0..b0adc80 100644
--- a/db/index.js
+++ b/db/index.js
@@ -8,6 +8,9 @@ switch(config.db.type){
   case 'mongodb':
     db = require('./mongodb')
     break;
+  case 'mysql':
+    db = require('./mysql')
+    break;
   case 'sqlite':
   default:
     db = require('./sqlite')
diff --git a/db/mysql.js b/db/mysql.js
new file mode 100644
index 0000000..2aa0997
--- /dev/null
+++ b/db/mysql.js
@@ -0,0 +1,70 @@
+'use strict'
+
+const mysql = require('mysql2')
+
+const mysqlURL = process.env.DB_URL || 'mysql://user:password@localhost:3306/database'
+
+let hosts = mysqlURL.split("://")[1].split("/")[0];
+let mysql_database = mysqlURL.split("://")[1].split("/")[1].split("?")[0];
+let mysql_user = hosts.split("@")[0].split(":")[0];
+let mysql_password = hosts.split("@")[0].split(":")[1];
+let mysql_host = hosts.split("@")[1].split(":")[0];
+let mysql_port = hosts.split("@")[1].split(":")[1];
+
+const db = mysql.createPool({
+    host: mysql_host,
+    user: mysql_user,
+    password: mysql_password,
+    database: mysql_database,
+    port: mysql_port
+})
+
+db.query(`CREATE TABLE IF NOT EXISTS tb_count (
+    id    INTEGER      PRIMARY KEY AUTO_INCREMENT
+                       NOT NULL
+                       UNIQUE,
+    name  VARCHAR (32) NOT NULL
+                       UNIQUE,
+    num   BIGINT       NOT NULL
+                       DEFAULT (0) 
+);`)
+
+function getNum(name) {
+  return new Promise((resolve, reject) => {
+    db.query('SELECT `name`, `num` from tb_count WHERE `name` = ?', name, (err, rows) => {
+      if (err) reject(err)
+
+      resolve(rows[0] || { name, num: 0 })
+    })
+  })
+}
+
+function getAll(name) {
+  return new Promise((resolve, reject) => {
+    db.query('SELECT * from tb_count', (err, rows) => {
+      if (err) reject(err)
+
+      resolve(rows)
+    })
+  })
+}
+
+function setNum(name, num) {
+  return new Promise((resolve, reject) => {
+    db.query(`INSERT INTO tb_count(\`name\`, \`num\`)
+              VALUES(?, ?)
+              ON DUPLICATE KEY UPDATE \`num\` = ?;`
+      , [name, num, num]
+      , (err, result) => {
+        if (err) reject(err)
+
+        resolve(result)
+      })
+ })
+}
+
+module.exports = {
+  getNum,
+  getAll,
+  setNum
+}
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index 223cb5d..0000000
--- a/package-lock.json
+++ /dev/null
@@ -1,2091 +0,0 @@
-{
-  "name": "kawaii-counter",
-  "version": "1.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
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-      "integrity": "sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw=="
-    },
-    "@babel/parser": {
-      "version": "7.11.0",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.11.0.tgz",
-      "integrity": "sha512-qvRvi4oI8xii8NllyEc4MDJjuZiNaRzyb7Y7lup1NqJV8TZHF4O27CcP+72WPn/k1zkgJ6WJfnIbk4jTsVAZHw=="
-    },
-    "@babel/types": {
-      "version": "7.11.0",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.11.0.tgz",
-      "integrity": "sha512-O53yME4ZZI0jO1EVGtF1ePGl0LHirG4P1ibcD80XyzZcKhcMFeCXmh4Xb1ifGBIV233Qg12x4rBfQgA+tmOukA==",
-      "requires": {
-        "@babel/helper-validator-identifier": "^7.10.4",
-        "lodash": "^4.17.19",
-        "to-fast-properties": "^2.0.0"
-      }
-    },
-    "abbrev": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
-      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
-    },
-    "accepts": {
-      "version": "1.3.7",
-      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
-      "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
-      "requires": {
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-        "negotiator": "0.6.2"
-      }
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-    "acorn": {
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diff --git a/package.json b/package.json
index baf9850..1a9f657 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "image-size": "^0.8.3",
     "mime-types": "^2.1.27",
     "mongoose": "^5.9.28",
+    "mysql2": "^3.3.5",
     "pug": "^3.0.0",
     "sqlite3": "^5.0.0"
   }