First of all, we should understand the principle of nailing (WeChat) to prevent multiple opening. Regular procedures can prevent multiple opening, and Mutex can be used. Nailing (WeChat) is a regular procedure, so Mutex is also used.

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Hello, everyone. This time, I bring you a router software transformation tutorial. The new route 3 D2 can't be wiped dead Breed , this tutorial is especially grateful to Enshan Wireless Forum @hackpascal

First, you need to have a new router 3 machine (isn't that nonsense? ）Big Cat started at 95 yuan in a fish. Fortunately, the seller didn't send me a 1.2 version For specific version difference, please refer to

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1、 First, let's understand what is Swap
Swap is translated as swap partition, which means virtual memory, but please note.
Although the swap area is usually recommended for systems that use traditional mechanical hard disks, switching with SSDs may lead to hardware degradation over time. Because of this consideration, we do not recommend enabling swap partitions on vendors that use SSD storage.
Doing so may affect the reliability of your and your neighbors' underlying hardware.

The above information is taken from the network, which means that Swap is only recommended to be used on ordinary mechanical hard disks. SSDs may reduce the performance of their machines, and may also drag other VPS on the same hen because you have enabled Swap. It is recommended that SSD users add memory directly

But a new problem has arisen. Just like big cats, I start a small blog. I can afford to hurt this performance. In addition, I don't need to spend more money on memory for the server when it is unnecessary. Virtual memory can also solve the embarrassing situation of insufficient memory for this server.

The above is purely personal opinion. If there is any mistake, please leave a message and correct it (OK, end the nonsense and officially enter the topic)

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Hello everyone, Big Cat. I wish you a happy New Year's Day in advance, A friend asked me how to log in with a key in Linux, but I couldn't draw a specific conclusion before because I didn't have practice, and sent it to my friend after Baidu. Today, Big Cat will teach you how to use the key instead of the password to log in to Linux. The key points are as follows: VMware8 、 putty 、 puttygen 、 WinSCP 。 The operating systems are Centos7.5 、 Ubuntu16.04.3LTS

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Hello, everyone. I believe you are very familiar with Google's Chrome browser. Because of its open source feature, many so-called "XX browsers" in China are based on its encapsulation
Of course, there are many familiar digital security browsers , is also one of the longest used browsers of Big Cat. Because online banking can only use IE 。
Its benefits are introduced here. For other details, please visit the encyclopedia of major engines

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