In fact, it is not to realize session sharing, but to use redis publish and subscribe, so that all cluster servers can send messages to their own sessions. For example, if userId is on the 35th server and there are 100 servers, then the first server receives the message and needs to notify userId. Instead […]
Tag: publish-subscribe
SpringBoot+Redis publish-subscribe mode encapsulates custom annotations for logs between microservices
Scene: In projects, system operation records are usually saved as logs in order to record user operation behaviors and analyze system problems when system failures occur. In order to maintain the low intrusion of code and the standardization of log data between microservices, You can use custom log annotations to achieve the above purpose, and […]
Redis publish-subscribe model
We know that Redis is often used as a cache server. In fact, in addition to caching, redis also has the function of publish and subscribe. Today we will briefly take a look at the functions and usage of the publish and subscribe model of redis. 1. Basic principles The publish-subscribe model is a message […]
ROS (topic communication) publish-subscribe communication mechanism
1. Publishing and subscribing of ROS basic data types ? std_msgs in ros contains many basic data types. Publication and subscription of basic data types are implemented through the data types in std_msgs (custom data types will follow). ? The data types contained in std_msgs can be viewed by typing “rosmsg list” in the terminal. […]
Two-way data binding on vue: MVVM, data hijacking and publish-subscribe mode
Directory 1 Overview 2. About the MVVM pattern 3. What is two-way binding 4. Publish-subscribe model 5. The core of two-way binding: Object.defineProperty() or Proxy constructor 1. Object. defineProperty() 6. Questions 1. Overview When Vue is instantiated, use Object.definePropety() method or Proxy constructor to process getter and setter for data. When the component is rendered, […]
Take a look at the Redis Pub/Sub publish-subscribe model, hardcore!
Redis implements the publish-subscribe messaging mode through SUBSCRIBE, UNSUBSCRIBE and PUBLISH. Redis provides two modes of implementation, namely “publish/subscribe to Channel” and “Publish\Subscribe to Mode”. Introduction to Redis Publish Subscribe Pub/Sub in action Through the channel (Channel) to achieve Implemented by Pattern Redisson and SpringBoot combat Principle analysis How is channel (Channel) publish/subscribe implemented? How […]
mitt uses 100 lines to implement the publish-subscribe model and has harvested 9k Stars
Directory Introduction and use of mitt mitt’s introduction use of mitt achieve mitt Summarize Let’s first understand what the publish-subscribe model is. The publish-subscribe model is a one-to-many dependency relationship between objects. When the state of an object changes, all objects that depend on it will be notified of the state. The publish-subscribe model flow […]
mitt uses 100 lines to implement the publish-subscribe model and has harvested 9k Stars
Hello everyone, I am Ruochuan. I have continued to organize source code shared reading activities for nearly a year. If you are interested, you can click here to scan the code and add me on WeChat lxchuan12 to participate. Every week, everyone will learn about 200 lines of source code together and make progress together. […]
Talk about your understanding of observers and publish-subscribe models
What is the observer pattern? The Observer pattern defines a one-to-many dependency relationship between objects. When the state of an object changes, all objects that depend on it will be notified and automatically updated The observer mode belongs to the behavioral mode. The behavioral mode focuses on the communication between objects. The observer mode is […]
Spring Boot integrates Kafka to dynamically create consumers and implement a multi-consumer publish-subscribe model
When Spring Boot integrates Kafka, everyone knows that consumers can be created using the @KafkaListener annotation. But the @KafkaListener annotation is static, which means that the consumer has been determined at compile time, and the consumer cannot be created dynamically. But in fact, using the Java API provided by Kafka, the dynamic creation of consumers […]