Help:dify's memory has been occupied, almost not released, what is the cause?

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

After we according to the official documentation, the problem of cpu bottleneck is basically solved, but the memory usage is still very problematic. When we stress test dify, it will drop his free memory from 10GB to a few hundred megabytes

After we restarted it ourselves, we didn't conduct a stress test. We just left it running with some test requests. It can be seen that the memory is still gradually decreasing, although the trend is slow.

2. Additional context or comments

No response