diff --git a/Dockerfile b/Dockerfile
index beff63c..caa5c96 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
-# FROM openresty/openresty:centos # this will pull lastest version
+# this will pull lastest version
 # https://hub.docker.com/r/openresty/openresty/tags?page=1&name=centos
-FROM openresty/openresty:1.21.4.1-centos
+# FROM openresty/openresty:centos
+FROM openresty/openresty:1.21.4.1-4-centos7
 
 # not ENV TZ "Asia/Shanghai"
 ENV TZ Asia/Shanghai
diff --git a/bin/ngxway.sh b/bin/ngxway.sh
index 02ae048..ab03adb 100644
--- a/bin/ngxway.sh
+++ b/bin/ngxway.sh
@@ -1,3 +1,16 @@
 cp /dist/vhosts/* /etc/nginx/conf.d/
 cp /dist/conf/* /usr/local/openresty/nginx/conf/
 nginx -s reload
+
+# Write start info to ngxway.start.log and fix this bug : https://github.com/WGrape/ngxway/issues/4
+time=$(date "+%Y-%m-%d %H:%M:%S")
+if [ $? -ne 0 ]; then
+    log="[${time}] >>>>>>>>failed to start ngxway<<<<<<<<"
+    echo -e $log
+    echo $log >> /dist/logs/ngxway.start.log
+    exit 1
+else
+    log="[${time}] start ngxway success"
+    echo -e $log
+    echo $log >> /dist/logs/ngxway.start.log
+fi
diff --git a/conf/nginx.conf b/conf/nginx.conf
index b44d52d..5d96dec 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -40,5 +40,12 @@ http {
     sendfile on;
     keepalive_timeout 65;
 
+    # Declare a shared memory region
+    lua_shared_dict my_limit_req_store 30m;
+
+    # here is lua lib path and search lua keyword : https://hub.docker.com/layers/openresty/openresty/1.21.4.1-centos/images/sha256-43b77448f355d7266a13e6a8f2e495de7b29b7d7e8b872e420d835f04120fb44?context=explore
+    # https://github.com/openresty/lua-nginx-module#lua_package_path
+    lua_package_path "/usr/local/openresty/site/lualib/?.ljbc;/usr/local/openresty/site/lualib/?/init.ljbc;/usr/local/openresty/lualib/?.ljbc;/usr/local/openresty/lualib/?/init.ljbc;/usr/local/openresty/site/lualib/?.lua;/usr/local/openresty/site/lualib/?/init.lua;/usr/local/openresty/lualib/?.lua;/usr/local/openresty/lualib/?/init.lua;./?.lua;/usr/local/openresty/luajit/share/luajit-2.1.0-beta3/?.lua;/usr/local/share/lua/5.1/?.lua;/usr/local/share/lua/5.1/?/init.lua;/usr/local/openresty/luajit/share/lua/5.1/?.lua;/usr/local/openresty/luajit/share/lua/5.1/?/init.lua;";
+
     include /etc/nginx/conf.d/*.conf;
 }
diff --git a/lua/check_sign.lua b/lua/check_sign.lua
index 88f4aa3..073d009 100644
--- a/lua/check_sign.lua
+++ b/lua/check_sign.lua
@@ -47,7 +47,7 @@ function checkTimestamp()
 
     -- 如果时间戳相差在1小时内，则视为正常请求，否则视为恶意请求
     now = os.time()
-    if math.abs(now - timestamp) > 3600 then
+    if math.abs(now - tonumber(timestamp)) > 3600 then
         return false
     end
 
diff --git a/lua/ip_check.lua b/lua/ip_check.lua
deleted file mode 100644
index e69de29..0000000
diff --git a/lua/limit_traffic.lua b/lua/limit_traffic.lua
index 9531efb..94a6c27 100644
--- a/lua/limit_traffic.lua
+++ b/lua/limit_traffic.lua
@@ -1,4 +1,36 @@
--- https://blog.csdn.net/carlos__z/article/details/112208972
--- https://blog.csdn.net/knight_zhou/article/details/122495234
--- https://blog.openresty.com.cn/cn/edge-cache-rules/
+-- https://github.com/openresty/lua-resty-limit-traffic
+local limit_req = require "resty.limit.req"
 
+-- limit the requests under 200 req/sec with a burst of 100 req/sec,
+-- that is, we delay requests under 300 req/sec and above 200
+-- req/sec, and reject any requests exceeding 300 req/sec.
+local lim, err = limit_req.new("my_limit_req_store", 200, 100)
+if not lim then
+    ngx.log(ngx.ERR, "failed to instantiate a resty.limit.req object: ", err)
+    return ngx.exit(500)
+end
+
+-- the following call must be per-request.
+-- here we use the remote (IP) address as the limiting key
+local key = ngx.var.binary_remote_addr
+local delay, err = lim:incoming(key, true)
+if not delay then
+    if err == "rejected" then
+        return ngx.exit(503)
+    end
+    ngx.log(ngx.ERR, "failed to limit req: ", err)
+    return ngx.exit(500)
+end
+
+if delay >= 0.001 then
+    -- the 2nd return value holds the number of excess requests
+    -- per second for the specified key. for example, number 31
+    -- means the current request rate is at 231 req/sec for the
+    -- specified key.
+    local excess = err
+
+    -- the request exceeding the 200 req/sec but below 300 req/sec,
+    -- so we intentionally delay it here a bit to conform to the
+    -- 200 req/sec rate.
+    ngx.sleep(delay)
+end
diff --git a/start.sh b/start.sh
index d260d2b..4710a77 100644
--- a/start.sh
+++ b/start.sh
@@ -27,6 +27,9 @@ if [ $? -ne 0 ]; then
   exit 1
 fi
 
+# Mapping to local disk storage
+mkdir -p /tmp/logs/ && chmod -R 777 /tmp/logs/
+
 # Run container
 docker run --name ngxwayContainer -d -p 127.0.0.1:8090:8090 -v /tmp/logs:/dist/logs/ ngxway
 if [ $? -ne 0 ]; then
diff --git a/stop.sh b/stop.sh
index 7c44d3a..de2a75c 100644
--- a/stop.sh
+++ b/stop.sh
@@ -7,6 +7,9 @@ docker container rm ngxwayContainer
 # Remove image
 docker rmi ngxway
 
+# Remove local volume data
+rm -rf /tmp/logs
+
 if [ $? -ne 0 ]; then
   echo -e ">>>>>>>>Stop failure<<<<<<<<"
   exit 1
diff --git a/vhosts/ngxway.conf b/vhosts/ngxway.conf
index 37ecc08..d0d7a79 100644
--- a/vhosts/ngxway.conf
+++ b/vhosts/ngxway.conf
@@ -14,9 +14,10 @@ server {
         set $date $1$2$3$4;
     }
     access_log /dist/logs/ngxway.access.$date.log;
-    error_log /dist/logs/ngxway.error.$date.log;
+    error_log /dist/logs/ngxway.error.log error; # error_log not support variable, such as /dist/logs/ngxway.error.$date.log
 
     access_by_lua_file /dist/lua/check_sign.lua;
+    # access_by_lua_file /dist/lua/limit_traffic.lua;
 
     location / {
         root /dist/html/;