From f307a04d102c668477362d425e0a5059ba173a19 Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <sadeep@asciimx.com>
Date: Sun, 11 Jan 2026 15:42:35 +0800
Subject: Add xor() cipher to fpm lock, add limitation to neo4j.

---
 _log/neo4j-a-star-search.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to '_log/neo4j-a-star-search.md')

diff --git a/_log/neo4j-a-star-search.md b/_log/neo4j-a-star-search.md
index ca9a563..017a33e 100644
--- a/_log/neo4j-a-star-search.md
+++ b/_log/neo4j-a-star-search.md
@@ -28,7 +28,6 @@ private double computeHeuristic(
         * Math.sin(lonDistance / 2);
 
     final double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
-
     return earthRadius * c * kmToNM;
 }
 ```
@@ -50,6 +49,9 @@ private void updateCosts(
 
 300x speedup. Scaled to 13,000 route points. 
 
+Despite impressive speedup, performance horizon visible. Unlikely to scale past
+16,000 points.
+
 Upstreamed changes: <a
 href="https://github.com/neo4j-contrib/neo4j-graph-algorithms/releases/tag/3.4.0.0"
 class="external" target="_blank" rel="noopener noreferrer">Neo4J v3.4.0</a> | 
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