Method and system for realizing delay message queue

Abstract

The invention discloses a method and system for realizing a delay message queue, and the method comprises the steps that a client module transmits a message to a server module, and the server module writes the message into a relational database for storage; the server module judges that the expiration time of the message is greater than the time of the current server, and generates a delay messagerecord; the server module writes the delay message record into a delay message queue in a memory database, and periodically polls the delay message queue; the client module pulls a delay message record to the server module, and the server module checks the delay message queue, reads the message content in the relational database and feeds back the message content to the client module; and the client module receives the message content, sends ACK to the server module, and displays that the message is successfully received. According to the method, an extension strategy is adopted, various service scenes needing message delay are supported, functions of an existing message queue system are fully utilized to achieve zero invasion, and risks caused by modification of an original message queuesystem are avoided.

Description

technical field [0001] The present invention relates to the technical field of distributed services, in particular to a method and system for implementing delayed message queues. Background technique [0002] The message queue has a good peak-shaving function—that is, through asynchronous processing, transaction messages generated in a short period of high concurrency are stored in the message queue, thereby smoothing out concurrent transactions during the peak period. In some flash sales and promotional activities of e-commerce, reasonable use of message queues can effectively resist the impact of a large number of orders on the system at the beginning of promotional activities. A delayed message means that the message is not immediately visible to the consumer after it is sent, but is delivered to the consumer at the time specified by the user. For example, if we now send a message with a delay of 1 minute, it will be sent to the server immediately after the message is se...

AI Technical Summary

Problems solved by technology

[0003] The existing system polls the database by setting a timer to achieve delayed messages, which causes a sharp decline in the read and write performance of the database, thus affecting the overall performance of the service

Message queues already exist in many existing distributed systems. Some message queues do not support delayed messages, and some partially support delayed messages (for example, there are restrictions on the delay time, such as 5 minutes, 10 minutes, 1 Hours, etc., does not support delayed messages at any time), cannot fully meet business needs

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