Recently, the Sino-US trade war has become one of the talking points in the market.
On March 22, 2018, US President Trump signed a presidential memorandum at the White House on imposing tariffs on Chinese products exported to the United States;
On March 23, 2018, the Ministry of Commerce of China released a list of products to be suspended from the 232 measures for US steel and aluminum products, and plans to impose additional tariffs on some products imported from the United States.
The two world giants began to fight each other on the trade battlefield. The editor did some curious online popular science, and concluded that the Sino-US trade dispute is a dispute caused by a serious trade imbalance between China and the United States. As the largest source of U.S. trade deficit, China has always been the focus of the U.S. trade war. Simply put, China's trade volume to the US is smaller than the US's trade volume to China.
According to the above description, it is indeed a CDN that has nothing to do with it.
Then, as a small editor with a strange brain circuit, today I want to talk about the relationship between trade surplus and deficit and CDN performance.
From the perspective of trade surplus and deficit, it means that there is a relationship between the flow of goods in two countries or regions, and one side has more goods flowing into the other than the other, which is a deficit; otherwise, it is a surplus. This is very similar to the network relationship between operators in our Internet world, especially.
From the above figure, we can see the statistics of an operator's international export traffic. The traffic coming in from the United States is far greater than the traffic going from domestic exports to the United States. There is an implicit relationship involved here, that is, operators will conduct inter-network settlement according to the surplus and deficit of this traffic. The so-called inter-network settlement is, to put it bluntly, the demand for content. Whoever has more content resources has the right to speak. That is, countries with trade surpluses will gain more benefits, and the same is true in this online world.This is the problem. There are always people who are reluctant to pay. For example, when a T1 operator in the United States goes to a South American country, the United States is an important content exporting country. Naturally, there is a surplus of traffic locally, and they have to charge the other party's inter-network settlement fees. As a result, the small South American country basically does not establish direct routing connection with this T1 operator, and it is a free way to bypass other operators. In this way, you can jump directly to the ground, but you have to run to other countries, such as going to Mexico to make a big circle and come back. If it is a CDN node, this will affect the performance of the CDN, especially the local users in small South American countries are connected to the local operator, and their access path is not the shortest domestic path to the operator's CDN node in T1 , but bypassing a long international link to reach the node of this CDN.
Here is a reminder, all guests should not be too obsessed with the target user area and require CDN nodes, and also need to pay attention to whether the CDN nodes have direct routes to the local operator. Otherwise, it will probably go around half the world~!