diff --git a/background.js b/background.js
index 1413a1c..ce55f6c 100644
--- a/background.js
+++ b/background.js
@@ -280,9 +280,10 @@ const checkDonate = async (loginName = null, opayid = null) => {
     })
     if ('data' in result && Array.isArray(result.data) && result.data.length > 0) {
       let ids = result.data.map(t => t.donateid)
+      let inparams = ids.map((t, idx) => `$${(idx + 1)}`)
       let dbres = await db.query({
-        text: `select * from "public"."donate_list" where "donate_id" in ($1)`,
-        values: [ids]
+        text: `select * from "public"."donate_list" where "donate_id" in (${inparams.join(',')})`,
+        values: [...ids]
       })
       let list = result.data.filter(t => {
         for (let i of dbres.rows) {
@@ -290,7 +291,24 @@ const checkDonate = async (loginName = null, opayid = null) => {
         }
         return true
       })
-      
+      for (let i of list) {
+        let text = `insert into "public"."donate_list" ("opayid", "donate_id", "price", "text", "name") values 
+          ($1, $2, $3, $4, $5)`
+        let values = [opayid, i.donateid, i.amount || 0, i.msg || '', i.name || '']
+        try {
+          await db.query({
+            text,
+            values
+          })
+          let msg = `/me 感謝 ${i.name} 贊助了 ${i.amount} 元, ${i.msg}`
+          event.emit('twitchSend', {
+            msg,
+            channel: loginName
+          })
+        } catch (err) {
+          console.log(err)
+        }
+      }
     }
   } catch (err) {
     console.log(err)
diff --git a/bin/dbVersion.json b/bin/dbVersion.json
index 3a2ad2d..0ab91fd 100644
--- a/bin/dbVersion.json
+++ b/bin/dbVersion.json
@@ -10,7 +10,8 @@
     {"file": "20180712-1.sql", "version": 8},
     {"file": "20180716-1.sql", "version": 9},
     {"file": "20180718-1.sql", "version": 10},
-    {"file": "20180719-1.sql", "version": 11}
+    {"file": "20180719-1.sql", "version": 11},
+    {"file": "20180721-1.sql", "version": 12}
   ],
   "test": []
 }
\ No newline at end of file
diff --git a/libs/twitch-bot/index.js b/libs/twitch-bot/index.js
index f94fa33..e0b893a 100644
--- a/libs/twitch-bot/index.js
+++ b/libs/twitch-bot/index.js
@@ -5,17 +5,30 @@ const {
   msgSplit
 } = require('./parser')
 const event = require('@root/event')
+// const _ = require('lodash')
 
 class WS {
   constructor () {
     /** @type {WebSocket} */
     this.ws = null
+    // cache struct
+    // cache = {
+    //   [channel]: {
+    //     time: timestamp,
+    //     list: []
+    //   }
+    // }
+    this.cache = {}
+    this.tick = null
     this.join = []
+    this.tick = setInterval(this.runTick.bind(this), 1000)
     event.on('twitchJoin', (channel) => {
       this.joinChannel(channel)
     })
     event.on('twitchSend', data => {
-      this.sendMsg(data.channel, data.message)
+      if (!('msg' in data) || typeof data.msg !== 'string') return
+      if (!('channel' in data) || typeof data.channel !== 'string') return
+      this.queueMsg(data.channel, data.msg)
     })
   }
 
@@ -66,7 +79,7 @@ class WS {
     this.ws.send('CAP REQ :twitch.tv/membership :twitch.tv/commands')
 
     // 取得要加入的頻道列表
-    let text = `select "name" from "public"."twitch_channel where "join" = true`
+    let text = `select "name" from "public"."twitch_channel" where "join" = true`
     let result = await db.query({
       text
     })
@@ -85,6 +98,45 @@ class WS {
     }
   }
 
+  queueMsg (channel, msg) {
+    if (typeof channel !== 'string' || channel.trim().length === 0) return
+    if (typeof msg !== 'string' || msg.trim().length === 0) return
+    if (channel in this.cache) {
+      if ('list' in this.cache[channel]) {
+        this.cache[channel].list = [...this.cache[channel].list, msg]
+      } else {
+        this.cache[channel].list = [msg]
+      }
+    } else {
+      this.cache[channel] = {
+        time: -1,
+        list: [msg]
+      }
+    }
+  }
+
+  runTick () {
+    if (this.cache === null || typeof this.cache !== 'object') return
+    let time = Date.now()
+    for (let i in this.cache) {
+      if ('time' in this.cache[i] && this.cache[i].time <= (time - 1500)) {
+        if ('list' in this.cache[i] && Array.isArray(this.cache[i].list) && this.cache[i].list.length > 0) {
+          let msg = this.cache[i].list[0]
+          this.cache[i].list = [...this.cache[i].list.slice(1)]
+          this.sendMsg(i, msg)
+        }
+        this.cache[i].time = time
+      } else {
+        if ('list' in this.cache[i] && Array.isArray(this.cache[i].list) && this.cache[i].list.length > 0) {
+          let msg = this.cache[i].list[0]
+          this.cache[i].list = [...this.cache[i].list.slice(1)]
+          this.sendMsg(i, msg)
+        }
+        this.cache[i].time = time
+      }
+    }
+  }
+
   sendMsg (channel = null, message = null) {
     if (this.ws === null || !('send' in this.ws) || typeof this.ws.send !== 'function') return null
     if (channel === null || typeof channel !== 'string' || channel.trim().length === 0) return null
diff --git a/package.json b/package.json
index a8d7ca0..9011edc 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
     "koa-body": "^4.0.3",
     "koa-logger": "^3.2.0",
     "koa-router": "^7.4.0",
+    "lodash": "^4.17.10",
     "module-alias": "^2.1.0",
     "pg": "^7.4.3",
     "raw-body": "^2.3.3",
diff --git a/schema/20180721-1.sql b/schema/20180721-1.sql
new file mode 100644
index 0000000..fcb9dcd
--- /dev/null
+++ b/schema/20180721-1.sql
@@ -0,0 +1,3 @@
+ALTER TABLE public.donate_list DROP CONSTRAINT donate_list_pkey;
+ALTER TABLE public.donate_list ADD CONSTRAINT donate_list_opayid_donate_id_pk PRIMARY KEY (opayid, donate_id);
+ALTER TABLE public.donate_list DROP id;
\ No newline at end of file