diff --git a/lib/trello-csv.js b/lib/trello-csv.js
index b753011..a8b782c 100644
--- a/lib/trello-csv.js
+++ b/lib/trello-csv.js
@@ -20,6 +20,33 @@ class TrelloCSV {
     this.LISTS_URL = `https://trello.com/1/boards/$$BOARD_ID$$/lists?fields=name,url&key=${config.KEY}&token=${config.TOKEN}`
     this.CARDS_URL = `https://trello.com/1/lists/$$LIST_ID$$/cards?key=${config.KEY}&token=${config.TOKEN}&fields=name,labels,idMembers,desc,shortUrl`
     this.ACTIONS_URL = `https://trello.com/1/cards/$$CARD_ID$$/actions?key=${config.KEY}&token=${config.TOKEN}&filter=all`
+    this.clearRawData()
+  }
+
+  getRawData() {
+    return {
+      _boards: this._boards,
+      _members: this._members,
+      _lists: this._lists,
+      _cards: this._cards,
+      _actions: this._actions,
+    }
+  }
+
+  setRawData(datas) {
+    this._boards = datas._boards
+    this._members = datas._members
+    this._lists = datas._lists
+    this._cards = datas._cards
+    this._actions = datas._actions
+  }
+
+  clearRawData() {
+    this._boards = null
+    this._members = {}
+    this._lists = {}
+    this._cards = {}
+    this._actions = {}
   }
 
   async _getDataFromTrello(url) {
@@ -28,31 +55,46 @@ class TrelloCSV {
   }
 
   async loadBoards() {
-    return this._getDataFromTrello(this.BOARDS_URL)
+    if (!this._boards) {
+      this._boards = await this._getDataFromTrello(this.BOARDS_URL)
+    }
+    return this._boards
   }
 
   async loadMember(memberId) {
-    return this._getDataFromTrello(
-      this.MEMBERS_URL.replace('$$MEMBER_ID$$', memberId)
-    )
+    if (!this._members[memberId]) {
+      this._members[memberId] = await this._getDataFromTrello(
+        this.MEMBERS_URL.replace('$$MEMBER_ID$$', memberId)
+      )
+    }
+    return this._members[memberId]
   }
 
   async loadLists(boardId) {
-    return this._getDataFromTrello(
-      this.LISTS_URL.replace('$$BOARD_ID$$', boardId)
-    )
+    if (!this._lists[boardId]) {
+      this._lists[boardId] = await this._getDataFromTrello(
+        this.LISTS_URL.replace('$$BOARD_ID$$', boardId)
+      )
+    }
+    return this._lists[boardId]
   }
 
   async loadCards(listId) {
-    return this._getDataFromTrello(
-      this.CARDS_URL.replace('$$LIST_ID$$', listId)
-    )
+    if (!this._cards[listId]) {
+      this._cards[listId] = await this._getDataFromTrello(
+        this.CARDS_URL.replace('$$LIST_ID$$', listId)
+      )
+    }
+    return this._cards[listId]
   }
 
   async loadActions(cardId) {
-    return this._getDataFromTrello(
-      this.ACTIONS_URL.replace('$$CARD_ID$$', cardId)
-    )
+    if (!this._actions[cardId]) {
+      this._actions[cardId] = await this._getDataFromTrello(
+        this.ACTIONS_URL.replace('$$CARD_ID$$', cardId)
+      )
+    }
+    return this._actions[cardId]
   }
 
   async parseBoard(board) {
diff --git a/package.json b/package.json
index f333982..c96d20d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "trello-csv",
-  "version": "1.1.0",
+  "version": "1.2.3",
   "description": "",
   "main": "index.js",
   "scripts": {