Programmer Group

In the last blog, the old cat has synchronized with everyone how to build the relevant GO language development environment. I believe all the little partners in the car should have finished the environment. At the beginning of this article, we will be familiar with the basic grammar of GO language. After this article is finished, we actually ex ...

Author Liu Yu (Jiang Yu)Opentask is an open source, serverless cloud platform. It can respond to various events by executing extended code in the runtime container without users' concern for the relevant infrastructure.Introduction to opentaskOpentask is a cloud based distributed event driven programming service. Opentask provides a programming ...

introduction Regular expressions are special strings used to match text (character set). If you want to extract a phone number from a text file, you can use a regular expression. If you need to find all files with numbers in the middle of the name, you can use a regular expression. If you want to find all duplicate words in a text block, ...

1, Introduction to KerberosKerberos can put the authenticated key on a reliable node before cluster deployment. When the cluster is running, the nodes in the cluster are authenticated with the key, and the nodes that pass the authentication can provide services. The node attempting to impersonate cannot communicate with the nodes in the cluster ...

I believe you may have such a business requirement when you are working on a project: the data displayed on the page or interface shall be kept to two decimal places. Then, this article will share with you several ways of using Java to retain two decimal places. The article gives a detailed example code, which is very helpful for your learning ...

catalogue1, Kubedm deployment1.1 environmental preparation1.2. Install docker on all nodes1.3 install kubedm, kubelet and kubectl on all nodes1.4. Deploy K8S cluster1.4.1. On the master node, upload the kubedm-basic.images.tar.gz compressed package to the / opt directory1.4.2 copy image to node node1.4.3 initialize kubedmMethod 1Method 21.4.4 s ...

101. Symmetric binary tree To judge whether the mirror image is symmetrical, make a dotted line in the middle to judge whether the half fold coincides. For example, the root node depends on whether its left child node and right child node are the same, and then the left child node of the left child node and the right child node of the right c ...

Title Link: Where to Run? - LightOJ 1287 - Virtual Judge (ppsucxtt.cn) Topic meaning: there are n cities, numbered 0~n-1, and there are m right undirected edges. The edge right represents the time it takes to pass through this edge. A thief starts from the city numbered 0, and he will not go to the city he has passed. Every time he arrives at ...

  as one of the subprojects of Spring Cloud, Spring Cloud OpenFeign provides a solution for calling between services under the microservice architecture by integrating OpenFeign into the Spring Boot application. Firstly, we use the declarative way of OpenFeign to define the Web service client; Secondly, it goes further by integrating Ribbo ...

1, ForewordThe author is working on a project recently. In order to improve the throughput, the message queue is used to realize the production and consumption mode. In the production and consumption mode, there needs to be a collection to store the items produced by the producer. The author uses the most common list < T > collection type ...