Programmer Group

Module Encapsulation Programming Calculator implemented with object-oriented logic class Calcuator { public int Add(int i, int j) { return i + j; } public int Mul(int i, int j) { return i - j; } public int Max(int i ...

brief introduction Previously, the default authentication process of spring security was used to process user-defined data and password encryption, but in the actual development, it must be to use the page developed by itself, the business processing of login success and failure, etc. The personalization configuration is completed in the brow ...

Yesterday's examination questions Set configuration context $ kubectl config use-context wk8s configure the kubelet systemed managed service, on the node labelled with name=wk8s-node-1,to launch a pod containing a single container of image nginx named myservice automatically. Any spec file requried should be placed in the /etc/kuberneteds/mai ...

Yesterday's examination questions Create a role (only all the operation permissions of pods under cka namespace) and rolebinding (use serviceaccount to authenticate authentication), use the corresponding serviceaccount as the authentication information to operate the pod under cka namespace and the pods under default namespace. – the nam ...

Hello, this is a blog to keep learning for your dreams.This is the first article to share my understanding of Agent Mode. The style of the article will always be told in a question and answer way, which is one of my personal favorites and is equivalent to a simulated interview.( What is an agent? Let's imagine a scenario where a French winer ...

Preface Before redis 5.0.0, the script redis-trib.rb written by ruby was used to operate redis cluster. The disadvantage of this is that Ruby and gems environment need to be installed. There is no Ruby environment such as redis-trib.rb in the official docker image, which needs to be installed by itself. It is time-consuming, complex and not eas ...

Golang provides the object pool Pool in sync.Usually everyone calls this an object pool.It is well known that go is automatically garbage collected, which greatly reduces the programming burden.But gc is a double-edged sword.For example, they are friendly to beginning programmers, but later on, as the p ...

First, learn about the various post processor extensions (1) BeanFactoryPostProcessor - bean factory post-processing Once the BeanFactory standard has been initialized (all BeanDefinition s have been registered after package scanning), this BeanFactory can be postprocessed. (2) BeanDefinitionRegistryPostProcessor - bean Definition Registry Post ...

This paper originally planned to write two parts. The first is to record the latest bugs related to Base64. The second is the detailed explanation of the principle of Base64 encoding. It turns out it's half written, eh? How can I say such a long time about a thing that is not complicated? It's not conducive to reading and understanding (actuall ...

10_ file Text files: Based on character encoding, such as ASCII, UNICODE Binary file open FILE *fopen(filename, mode); // The system itself defines a structure called FILE // Mode indicates the mode of opening the file /* mode The value of r rb Open as read-only w wb Open as write a ab Open as append, add content at the ...