From 5eee2cd4a06d4a33530615896d34a55bdb45d9ba Mon Sep 17 00:00:00 2001
From: mlemanczyk <marek@lemanczyk.eu>
Date: Sun, 25 Jan 2026 01:35:19 +0100
Subject: [PATCH] k state repository performance improvement. We'll now flush
 the updates every so often, now.

---
 PerfectNumbers.Core/Persistence/KStateRepository.cs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/PerfectNumbers.Core/Persistence/KStateRepository.cs b/PerfectNumbers.Core/Persistence/KStateRepository.cs
index 39013ee..2a8bd38 100644
--- a/PerfectNumbers.Core/Persistence/KStateRepository.cs
+++ b/PerfectNumbers.Core/Persistence/KStateRepository.cs
@@ -58,6 +58,8 @@ public sealed class KStateRepository : IDisposable
             });
     }
 
+	private volatile int _flushCount;
+
     public void Upsert(ulong prime, BigInteger k)
     {
         using var session = _store.For(new SimpleFunctions<string, string>()).NewSession<SimpleFunctions<string, string>>();
@@ -65,7 +67,13 @@ public sealed class KStateRepository : IDisposable
         string valueString = k.ToString(CultureInfo.InvariantCulture);
         session.Upsert(keyString, valueString);
         session.CompletePending(true);
-		_store.Log.FlushAndEvict(wait: true);
+		var flushCount = ++_flushCount;
+		if (flushCount >= PerfectNumberConstants.ByDivisorStateSaveInterval)
+		{
+			_flushCount = 0;
+			_store.Log.FlushAndEvict(wait: true);
+		}
+		
     }
 
     public bool TryGet(ulong prime, out BigInteger value)