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1. General As the old saying goes: people who can rest can work better. Body is the capital of revolution. If their body breaks down, they can no longer work.   To get back to business, we talked about the distributed configuration center config of SpringCloud before. In this article, we talked about the dynamic refresh of config configuration, ...

1, windows installation 1.1. erlang Download erlang download page: https://www.erlang.org/downloads erlang download address: https://erlang.org/download/otp_win64_24.0.exe You can install directly in the next step. When you encounter the following figure, install visual C++ Configure environment variables after installation And add% Er ...

1, Release confirmation principle         The producer sets the channel to confirm mode. Once the channel enters the confirm mode, all messages published on the channel will be assigned a unique ID (starting from 1). Once the message is delivered to all matching queues, the broker will send a confirmation to ...

About rabbitmq prefetch count 1-1: cause I've always had a vague impression of prefetch count. I only know that instead of the original broker polling for consumer s, I can pull down n items at a time, but when I send message s one by one through the interface, I still poll, so I have this verification blog. 1-2: experimental code Configura ...

preface Celery is a Python task queue system used to handle work task assignments across threads or network nodes. It makes asynchronous task management easy. Your application only needs to push messages to agents like RabbitMQ, and the Celery worker will pop them up and schedule tasks to execute. Celery Five roles of celery Task s are task ...

1, Introduction to message oriented middleware introduce Message queuing refers to the use of efficient and reliable messaging mechanism for platform independent data exchange, and the integration of distributed systems based on data communication. Features (functions) Application decouplingasynchronous communicationFlow peak clipping(massi ...

When using RabbitMQ for asynchronous message processing, it is always found that after one or more consumer processes are started, they are automatically disconnected after a period of time, such as a few minutes or 10 minutes, resulting in a large number of messages in the queue and can not be processed. In order to ensure the continuous high ...

1, Concept 1. Advantages Application decoupling: improving system fault tolerance and maintainability Asynchronous acceleration: improve user experience and system throughput Peak shaving and valley filling: improving system stability 2. Disadvantages Reduced system availability The more external dependencies the system introduces, ...

1, RabbitMQ cluster architecture          RabbitMQ cluster architecture has the following types: active / standby mode, remote mode, mirror mode and multi active mode. Active standby mode          It is an active / standby scheme (if the primary node hangs, the s ...

ACK mechanism What is a message acknowledgement ACK If an exception occurs when the consumer's server processes a message during message processing, the message being processed may not complete message consumption and data will be lost. To ensure that data is not lost, RabbitMQ supports message determination - ACK. Message confirmation mecha ...