From 96832e3d1ea53868feb02ef48637a6fbbfd9f037 Mon Sep 17 00:00:00 2001
From: Ahmed Yasin Koculu <koculu@gmail.com>
Date: Mon, 15 Aug 2022 12:26:57 +0200
Subject: [PATCH] Improve cache index collision handler.

---
 src/ZoneTree/Segments/Disk/CircularBlockCache.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ZoneTree/Segments/Disk/CircularBlockCache.cs b/src/ZoneTree/Segments/Disk/CircularBlockCache.cs
index afaef1e..29b0b3a 100644
--- a/src/ZoneTree/Segments/Disk/CircularBlockCache.cs
+++ b/src/ZoneTree/Segments/Disk/CircularBlockCache.cs
@@ -30,7 +30,10 @@ public class CircularBlockCache
             block,
             (key, existingBlock) =>
             {
-                if (existingBlock.LastAccessTicks + 
+                // todo: add secondary table to optimize
+                // cache index collision.
+                if (MaxCachedBlockCount > 32 && 
+                    existingBlock.LastAccessTicks + 
                     MinimumBlockLifeSpanInMilliseconds >
                     DateTime.UtcNow.Ticks)
                     return existingBlock;