diff --git a/src/main/java/au/com/royalpay/payment/manage/analysis/core/impls/DashboardServiceImpl.java b/src/main/java/au/com/royalpay/payment/manage/analysis/core/impls/DashboardServiceImpl.java
index 34e102afd..d28c2ff4a 100644
--- a/src/main/java/au/com/royalpay/payment/manage/analysis/core/impls/DashboardServiceImpl.java
+++ b/src/main/java/au/com/royalpay/payment/manage/analysis/core/impls/DashboardServiceImpl.java
@@ -1,5 +1,28 @@
 package au.com.royalpay.payment.manage.analysis.core.impls;
 
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+import java.util.TimeZone;
+import java.util.TreeMap;
+
+import javax.annotation.Resource;
+
+import org.apache.commons.lang3.time.DateUtils;
+import org.apache.commons.lang3.time.DurationFormatUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.stereotype.Service;
+
+import com.alibaba.fastjson.JSONObject;
+import com.github.miemiedev.mybatis.paginator.domain.Order;
+import com.github.miemiedev.mybatis.paginator.domain.PageBounds;
+
 import au.com.royalpay.payment.core.exceptions.ParamInvalidException;
 import au.com.royalpay.payment.manage.analysis.beans.AnalysisBean;
 import au.com.royalpay.payment.manage.analysis.core.DashboardAnalysisTask;
@@ -10,20 +33,6 @@ import au.com.royalpay.payment.manage.analysis.mappers.TransactionAnalysisMapper
 import au.com.royalpay.payment.manage.mappers.system.ClientMapper;
 import au.com.royalpay.payment.manage.merchants.core.ClientManager;
 import au.com.royalpay.payment.tools.defines.TradeType;
-import com.alibaba.fastjson.JSONObject;
-import com.github.miemiedev.mybatis.paginator.domain.Order;
-import com.github.miemiedev.mybatis.paginator.domain.PageBounds;
-import org.apache.commons.lang3.time.DateUtils;
-import org.apache.commons.lang3.time.DurationFormatUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Service;
-
-import javax.annotation.Resource;
-import java.text.DateFormat;
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.util.*;
 
 /**
  * Created by davep on 2016-07-28.
@@ -272,6 +281,7 @@ public class DashboardServiceImpl implements DashboardService,DashboardAnalysisT
     }
 
     @Override
+    @Cacheable(value = ":exchange_rates:", key = "'exchange_rates'+#root.args[0]+#root.args[1]")
     public List<JSONObject> listExchangeRateHistory(String begin, String end) {
         final String[] pattern = {"yyyyMMdd"};
         Date beginDate;