Programmer Think

I. system environment Centos7 Two, installation   $ yum install -y firewalld III. basic startup command   $ systemctl status firewalld # View state $ systemctl start firewalld # start-up $ systemctl stop firewalld #Close $ systemctl enable firewalld ...

TCP is a protocol based on streaming. Request data is not bounded in its transmission, so when we read a request, we may not get a complete packet.If a packet is large, it may be sliced into multiple packets for multiple transmissions.At the same time, if there are multiple small packages, they may be integrated into one large package for tran ...

Communication model (a -- > B -- > A): a sends data to B through UDP (a can be a specified destination, or a broadcast message to b). B sends back a message to a according to the source address and port after receiving the message, which is such a simple communication process. For the explanation of golang udp, please refer to the followi ...

http://www.cnsendblog.com/index.php/?p=137GPS platform, website construction, software development, system operation and maintenance, find Senda network technology!http://cnsendnet.taobao.com In the past, when WebForm was used, the drop-down box only needed to bind the code directly in the background. Now let's take a look at the DropDownList ...

lua advantagesReduce network overhead: code without Lua needs to send multiple requests to Redis, while script only needs one time to reduce network transmission;Atomic operation: Redis executes the entire script as an atom without worrying about concurrency or transaction;Reuse: the script will be permanently saved in Redis, and other clients ...

meaning of the title Title Link Sol What is the space complexity of two-dimensional line tree Why is the whole network space \ (n^2 \) and someone insisted that it is \ (nlog^2n \) For this problem, because there are modification operations, we need to mark the outer line tree, and the form of the mark is to assign a value to an interval. So we ...

Using the pre trained deep learning face detector model provided by OpenCV, face recognition can be carried out quickly and accurately. In August 2017, OpenCV 3.3 was officially released, bringing a highly improved "DNN deep neural networks" module. The module supports many deep learning frameworks, including Caffe, Tenso ...

#(1) generate flanneld certificate on the springboard machine #cd /temp/ssl/ cat > flanneld-csr.json <<EOF { "CN": "flanneld", "hosts": [], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "Hangzhou", "L": "Hangzhou", "O": ...

1. Preface Configuration design is added at the request of a customer. The design concept is to provide a primary function of configuration design, such as reading the custom control dynamic library, loading all the controls into the control bar (somewhat like the qtcreator's control bar) Users drag the corresponding controls onto the canvas, a ...

The forward proxy is a server between the client and the original server. In order to obtain content from the original server, the client sends a request to the proxy and specifies the target (the original server), and then the proxy delivers the request to the original server and returns the obtained content to the client. The client can use ...