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preface <Spring Microservices in Action> Principle and practice of Spring Cloud Alibaba microservice "Spring cloud framework development tutorial in Silicon Valley of station B" Zhou Yang OAuth2 is a token based security authentication and authorization framework. It allows users to authenticate using third-party authenticati ...

Pseudo distributed clusters are shown in: https://blog.csdn.net/weixin_40612128/article/details/119008295?spm=1001.2014.3001.5501 After the pseudo distributed cluster is completed, let's take a look at what the real distributed cluster is like. Take a look at this figure. It shows three nodes. The one on the left is the master node and the t ...

Finite State MachineFinite state machine (English: finite state machine, abbreviation: FSM), also known as finite state automaton (English: finite state automaton, abbreviation: FSA), abbreviated as state machine, is a mathematical calculation model that represents finite states, transitions and actions between these states- WikipediaElements o ...

MQ related concepts What is mq Message queue is literally a queue. First in, first out, only messages are stored. It is also a cross process communication mechanism for upstream and downstream message delivery. In the Internet architecture, mq is a common upstream and downstream "logical decoupling + physical decoupling" message ...

1. TCC of distributed transaction solution 1.1 what is a TCC transaction TCC is the abbreviation of try, Confirm and Cancel. TCC requires each branch transaction to implement three operations: preprocess try, Confirm and Cancel. Try performs business check and resource reservation, Confirm performs business confirmation, and Cancel imp ...

1, Message queue In a computer, a message is the data sent by one program to another, and a queue (a data structure) is a container. Everything stored in it is put in first and taken out first. Therefore, message queue is a container that temporarily saves messages during message transmission. The use of queues can avoid the disadvantage t ...

preface    if you find it useful, remember to give the blogger a praise, comment and collection. It's not easy to write with one button.    and it's said that people who praise won't have too bad luck every day. If it's really white whoring, you're welcome to come often!!! 20 minutes to familiarize you with Redisson ...

01 expiration time TTL The expiration time TTL indicates that the expected time can be set for the message, and within this time, it can be received and obtained by the consumer; After that, the message will be deleted automatically. RabbitMQ can set TTL for messages and queues. At present, there are two methods to set. The first method i ...

Common load balancing algorithms for distributed system design 0 what is load balancing? Load Balance means to balance the load (work task) and allocate it to multiple operation units for operation, so as to complete the work task together. What are the types of load balancing? Software and hardware load balancing Software load balancin ...

1, Foreword Requirements: a testing framework is needed to test an IM} system and adapt to the current business logic. Testing uses Jmeter. Jmeter can also test websocket. Why develop a testing framework yourself? The most important point: TCP # protocol is user-defined. It cannot be well integrated with # Jmeter # and other frameworks. P ...