张磊的blog

Time to leave 51.la?

When I started to write blog in 2005, I used 51.la to do the traffic statistics. This was adopted from Zhiyong, the man who brought me to IT field. Then I infected a lot of people, such as popo, alone, zining, etc. However, lately I found, 51.la is not a good choice to get your traffic data served.

The left picture is the recent traffic data of Niupu, It tells there were 7,947 individuals visited niupu. Compared to the previous data (7,000ip/day in this entry), the current traffic is larger.

However, I got to know the data of 51.la is not accurate. Why? Have a look at this page: http://www.alimama.com/membersvc/zone/1683767.htm. I’ve published an ad block in alimama, but not all niupu’s pages contain the ad code. As alimama counts the traffic for each ad block, I got a different data that, on yesterday, the amount of individual visitors is 9,081. Besides, there must be ones who visited pages without an alimama ad block.

So I went to Google Analytics, and got a third data.

Google says, 9,364 people visited niupu last day. This number is more accurate than the 7,947, for alimama has a incomplete statistics num 9,081. 7,947 vs 9,364, more than 1,400 ips were miss counted.

1417/9364 , 51.la missed almost 15% of niupu’s traffic. This maybe caused by server slow, db query failure, DNS error or other possible matters, and I believe 51.la was not on purpose. But if we use an alternative service such as Yahoo Tongji, Google Analytics, less problem will there be.