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1, Brief introduction Open source AMQP implementation, written in Erlang language, supports a variety of clients Distributed, highly available, persistent, reliable and secure Support multiple protocols: AMQP, STOMP, MQTT, HTTP Message Oriented Middleware for business decoupling between multiple systems 2, Basic concepts 1. Exchange: an ...

SpringCloud The project source code written during the learning of the whole spring cloud: git@gitee.com:HumorChen/spring-cloud-parent.git The last blog was: eureka (service governance) Step by step screenshot of Eureka learning notes of spring cloud service registration discovery (service governance) (with the source code project written d ...

1. fastDFS fastDFS is an open source lightweight distributed file system developed in C language. It is generally used as a resource server 2. Main functions of fastdfs file storeFile synchronizationFile access (file upload | file download)It is especially suitable for online services based on documents (picture websites, video website ...

Why?In the actual development, we often encounter the situation that we need to wait for background events for a long time, such as the common code scanning login function, the event that the QR code interface needs to wait for the successful code scanning login in the background, and the task that takes a long time to complete, such as import ...

1. The concept of dead letter queues _First, clarify this definition from the conceptual explanation. Dead faith, as its name implies, is a message that cannot be consumed. Literally, it means that producer delivers the message to broker or directly to queue. Consumerer takes the message out of queue for consumption, but sometimes some mes ...

5. Switch In the previous section, we created a work queue. We assume that behind the work queue, each task is delivered to exactly one consumer (work process). In this section, we will do something completely different - we will convey the message to multiple consumers. This mode is called publish / subscribe To illustrate this pattern, we w ...

In ES, we can set Index Template and Dynamic Template to better manage and set indexes and mapping for us. 1, Index Template For example, we need to use es for log management. We all know that the amount of log data is very large. If a single index is used to save all log data, there may be some performance problems. We can automaticall ...

RabbitMQ dead letter queue and delay queue RabbitMQ itself has the properties of dead letter queue and dead letter switch. Delay queue can be realized through dead letter queue and dead letter switch. In the e-commerce industry, there is usually a demand: if the order is not paid in time out, the order will be cancelled automatically. Then the ...

preface Article on Spring cloud integrates the basic environment of Seata distributed transaction (Part I) In this paper, we mainly complete the function implementation of three micro service order services: cloudalibaba Seata order service2001, inventory service: cloudalibaba Seata storage service2002 and balance service: cloudalibaba Seata a ...

1. ElasticSearch overview The Elastic Stack, including elasticsearch, Kibana Beats and Logstash (also known as ELK Stack). It can safely and reliably obtain data from any source and any format, and then search, analyze and visualize the data in real time. Elasticsearch, abbreviated as ES, is an open-source and highly extended distributed full- ...