1、 There are mainly the following situations when the website has a card:
1. It is the reason of 100 network speeds;
2. It is the reason for the browser cache. Clear the browser cache;
3. It is the server; The server instability affects.
2、 The first two are good. If the reason is the server, the home page confirms whether these conditions exist:
1. Does the server bandwidth exceed?
2. Is there any server card caused by running other software in the server?
3. Does the server configuration meet the standard requirements?
4. Will the server exceed the delay standard, or is the PING value swapped seriously?
Any of the above four problems may lead to website card failure
3、 How to solve the server card problem
First, if you are using dial-up networking locally, we can restart the router or the cat used for dial-up networking, change the local IP address, and use the ping command to monitor, In this way, we can find a good local IP. That is to say, if there is no packet switching when our IP is connected, it means that the selected IP goes through a stable line node. 
If your IP is pinging normally locally, but the card is still strong in the server, we can take a look at your own CPU usage and memory usage. Generally, when your server's memory and CPU resources are not enough, a series of problems such as server card will occur, The first step is to clean up the garbage files in your server and close some unnecessary programs. If your server is a vps, it is recommended that you do not install software that consumes a lot of memory and cpu, and that you do not build a lot of websites in vps. The other thing is to check whether some of the patches in your server have not been patched. In some cases, you can restart your server after patching the patches in your server.
Another reason for the server card is the system problem of the server itself. In fact, the server is the same as our computer. When the system on our computer is used for a long time, the computer will also run slowly or get stuck. At this time, we need to backup our data in time, and then install our own system.
It may also be the configuration of the server itself. When there are many websites in your server, the memory or cpu of the server cannot meet their own operation, which may easily lead to a machine jam. At this time, we should upgrade the configuration of our server, or directly purchase a highly configured server to run our website.
If there are many websites, I still recommend that webmasters buy independent servers, because independent servers are separate from vps, and they are physical rather than virtual. It will not be affected by other machines.
