Programmer Group

1. What is Koa? Node.js is an asynchronous world. The official API supports the asynchronous programming model in the form of callback, which brings many problems, such as nesting of callback, and the possibility of calling callback to return da ...

Spring Security Analysis (6) - Development and Principle Analysis of Single Sign-on (SSO) Based on JWT When learning Spring Cloud, when encountering the related content of authorized service oauth, he always knows half of it, so he decided to study and collate the content, principle and design of Spring Security, Spring Security Oauth2 and othe ...

Implement distributed session Implement redis-based distributed session principle Replace the Session implementation class obtained from request based on HttpRequestWapper by providing a Session implementation class that gets data from redis rely on Introduce spring-boot-starter-data-redis, spring-session-data-redis; Introducing kr ...

1. Background Since business functions require access to IM (Instant Chat) functionality, the initial thought was to use WebSockets to achieve this functionality. It was natural to trick (haha) that the server version is too low to support the wx protocol (and WebSockets are no longer supported) and have to look for third-party services becaus ...

The signpost In line with the key words, this blog may be helpful to you. Flask applications without factory functions Flask Applications Without Blueprint Flask cross-domain configuration Login Status Management Based on Token Flask+Vue Vue Routing Interception Axios hook Applicable scenario This is a personal blog built record blog, but als ...

Previous articles EFK Follow-up of Logging System: fluent-bit Service Independence It completes fluent-bit acquisition, fluentd forwarding to kafka, and then to elastic search. Later, it is mentioned that the server logs should be synchronized to the fluent-bit environment. This can be accomplished by incremental synchronization through rsync, ...

Catalog Writing assertions Writing assertions using assert Write assertions that trigger expected exceptions Optimization of special data structure comparison Add custom instructions for failed assertions Details of assertion introspection Overwrite Cache Files To be able to assert se ...

Solve the single sign-on (SSO) problem after Spring Boot upgraded from 1.x to 2.x When learning Spring Cloud, when encountering the related content of authorized service oauth, he always knows half of it, so he decided to study and collate the content, principle and design of Spring Security, Spring Security Oauth2 and other permissions, authe ...

introduce XA, which means "eXtended Architecture", is the standard created by The Open Group for distributed transaction processing. Although MySQL 5.0 is the first version to support XA, MySQL 5.7 improves the reliability of XA support, ...

Catalog Use and invocation Call pytest through python-m pytest The status code returned at the end of pytest execution Get help information Maximum number of test cases allowed to fail Execute the specified test case Execute test cases in the specified module: Execute test cases in th ...