Dynamic Message Expiry Control in Middleware
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Solution Overview
Problem
Message expiry in message queues often expires before messages can be processed by consumers, leading to inefficiencies and increased network traffic due to reprocessing of expired messages, as producers lack complete knowledge of the messaging server and consumer's operational state, resulting in arbitrary expiry settings.
Innovation Solution
A computer-implemented method dynamically extends message expiry values based on factors such as queue depth, message position, processing speed, and priority, using a DynamicExpiry field in the message header to determine eligibility for extension, thereby ensuring messages are not expired before processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If message expiry is set to a fixed arbitrary value, then the system is simple to operate, but messages may expire before being processed by consumers leading to reprocessing and network traffic waste
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed arbitrary expiry value to a dynamic expiry value that automatically adjusts based on real-time queue depth and message position. The messaging server monitors queue conditions and extends expiry values for messages at risk of premature expiration, thereby preventing network traffic waste from reprocessing while maintaining ease of operation through automated management.
2Reliability
If message expiry is extended to prevent premature expiration, then message processing success rate improves, but the message queue may accumulate more messages increasing system complexity
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the expiry value parameter based on queue depth and message position. The messaging server modifies expiry values as a function of real-time system state, extending expiry for messages likely to expire prematurely while maintaining automated management that prevents queue accumulation and system complexity increase.
3Ease of manufacture
If producers set expiry values without knowledge of consumer processing speed, then the system is easier to implement, but messages may be expired before processing completing
Solution Approach 1:
The patent applies feedback by implementing a closed-loop system where the messaging server monitors queue depth and message processing status in real-time. The server uses this feedback to dynamically adjust expiry values, ensuring messages are not expired before processing completes while maintaining ease of implementation through automated feedback-driven management.
4Device complexity
If arbitrary expiry values are used, then the system requires less monitoring and control, but messages with tight deadlines may be lost due to queue depth variations
Solution Approach 1:
The patent applies preliminary action by proactively extending expiry values for messages identified as at-risk before they actually expire. The messaging server monitors queue conditions and preemptively adjusts expiry for messages with tight deadlines or high queue depth, preventing message loss while maintaining relatively simple control through automated detection and adjustment.
Data Source
AI summary
Dynamically controlling message expiry is provided. A message located in a message queue that has an expiry value and a dynamic expiry value set by a message producer in a header of the message is tracked. It is determined that the message is eligible for extension of the expiry value based on the dynamic expiry value being set to a particular value. An amount of time before a message consumer can process the message is determined based on one or more factors. The expiry value of the message is extended to form an extended expiry value in response to determining that the message is likely to expire in the message queue prior to the message consumer processing the message based on the one or more factors.