How Can I Resolve Memory Exhaustion Errors During XML-RPC Data Transfer from POS Systems?

Memory Exhaustion in XML-RPC Data Transfer

In a system involving client POS systems that send sales data to a centralized database via XML-RPC, a persistent error has emerged: "Fatal error: Allowed memory size of 134217728 bytes exhausted." Despite attempts to increase the memory limit, the error persists.

Identifying the Issue

While PHPPOS on the client side employs XML-RPC to send data, CodeIgniter and its related libraries manage the XML-RPC webservice on the server side. Investigations have revealed that the issue likely lies in the data transmission process itself rather than server-side processing.

Discarding Improper Solutions

Increasing the memory_limit using ini_set() is not a genuine solution, as it fails to address the underlying memory leak. Continuing with this approach may result in excessive RAM usage and potential performance degradation.

Recommended Course of Action

To resolve the issue effectively, it is crucial to trace the memory leak within the PHP code. This requires thorough debugging to identify the specific point where memory is being allocated excessively. By pinpointing and rectifying the memory leak, the system will operate efficiently without excessive memory consumption.

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