Email Port Agent Delayed Acknowledgment for Server Throughput
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Solution Overview
Problem
Existing email distribution and synchronization systems face inefficiencies due to high input/output operations when saving and processing requests, particularly when dealing with slow jobstore servers, which impacts server throughput.
Innovation Solution
Implementing a timed delay for saving requests to the jobstore, where requests are only saved if not completed within a specified time, allowing immediate acknowledgment of transaction completion without storing the request, thereby reducing unnecessary input/output operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the server saves every request to the jobstore immediately, then job recovery reliability is improved, but server throughput deteriorates due to excessive input/output operations
Solution Approach 1:
The system performs preliminary action by saving requests to the jobstore only when necessary (on timeout) rather than immediately for every request. The port agent delays saving to jobstore until the worker module fails to complete the request within a specified time frame, thus preparing the request for persistence only when needed for job recovery.
Solution Approach 2:
The system changes the parameter of request persistence timing from immediate to conditional (time-based). By introducing a timeout threshold parameter, the system dynamically determines whether to save to jobstore based on whether the request is completed within the expected time frame, optimizing the balance between reliability and throughput.
2Reliability
If the server saves requests to the jobstore for every transaction, then job recovery capability is improved, but input/output operation overhead increases
Solution Approach 1:
The system applies partial action by saving requests to the jobstore only partially - specifically, only when the timeout condition is met rather than for every single request. This reduces the frequency of I/O operations while still maintaining job recovery capability for the necessary cases.
Solution Approach 2:
The system uses self-service by having the port agent automatically determine when jobstore saving is necessary based on timeout conditions, without requiring manual intervention or excessive systematic saving. The system serves its own job recovery needs selectively.
3Measurement precision
If the server waits for complete job processing before acknowledgment, then transaction accuracy is improved, but response time deteriorates
Solution Approach 1:
The system performs preliminary acknowledgment to the client before the job is fully processed and removed from jobstore. The port agent sends acknowledgment as soon as the request is assigned to a worker module, allowing the client to proceed without waiting for complete processing while the server continues to handle the request in the background.
Solution Approach 2:
The system inverts the conventional acknowledgment timing by acknowledging receipt to the client immediately rather than waiting for processing completion. This reverses the traditional sequence where acknowledgment follows processing, improving response time while maintaining transaction accuracy through selective jobstore saving.
Data Source
AI summary
An electronic mail (email) communication system includes a mobile office platform. A direct access proxy accesses an electronic mailbox of the user and pushes email from the electronic mailbox of the user to a wireless communications device. A web client engine is operative with the mobile office platform and includes a port agent module that communicates with the wireless communications device over a port agent connection. It is operative to receive a message from a wireless communications device as a request corresponding to a job to be completed. A worker module receives the message from the port agent module and completes the job. The web client engine attempts to process jobs within a specified delay time, and if successful, transmits an acknowledgment (ACK) to indicate the job has been completed without saving the message to a jobstore database. If the job has not been completed within a specified delay time, the message can be saved to the database.