From a03dde190ede39675736e746c3045ecfc4baa79b Mon Sep 17 00:00:00 2001
From: comfyanonymous <comfyanonymous@protonmail.com>
Date: Mon, 20 Nov 2023 16:38:39 -0500
Subject: [PATCH] Cap maximum history size at 10000. Delete oldest entry when
 reached.

---
 execution.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/execution.py b/execution.py
index 918c2bc5..9a2ca5b9 100644
--- a/execution.py
+++ b/execution.py
@@ -681,6 +681,7 @@ def validate_prompt(prompt):
 
     return (True, None, list(good_outputs), node_errors)
 
+MAXIMUM_HISTORY_SIZE = 10000
 
 class PromptQueue:
     def __init__(self, server):
@@ -713,6 +714,8 @@ class PromptQueue:
     def task_done(self, item_id, outputs):
         with self.mutex:
             prompt = self.currently_running.pop(item_id)
+            if len(self.history) > MAXIMUM_HISTORY_SIZE:
+                self.history.pop(next(iter(self.history)))
             self.history[prompt[1]] = { "prompt": prompt, "outputs": {} }
             for o in outputs:
                 self.history[prompt[1]]["outputs"][o] = outputs[o]