From a18d687f1880b1a35d3067953ccc8690354cd106 Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Wed, 30 Sep 2026 01:41:48 +0200
Subject: [PATCH] [#67] OrganicService: Use ConcurrentDictionary

---
 Elwig/Services/OrganicService.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Elwig/Services/OrganicService.cs b/Elwig/Services/OrganicService.cs
index ae76e29..91ede7a 100644
--- a/Elwig/Services/OrganicService.cs
+++ b/Elwig/Services/OrganicService.cs
@@ -1,6 +1,7 @@
 using Elwig.Helpers;
 using Elwig.Models.Entities;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -47,7 +48,7 @@ namespace Elwig.Services {
                 (CategoriesOfProduct.Contains(TracesCategoryOfProduct.UNPROCESSED_PLANT_PRODUCTS_INCLUDING_SEEDS) || CategoriesOfProduct.Contains(TracesCategoryOfProduct.WINE));
         }
 
-        private static readonly Dictionary<int, (DateTime Timestamp, TracesCertificate[] Certificates)> _memberCerts = [];
+        private static readonly ConcurrentDictionary<int, (DateTime Timestamp, TracesCertificate[] Certificates)> _memberCerts = [];
 
         public async static Task<TracesCertificate[]> GetTracesCertificates(Member m, bool? tryNameAndAddress = null) {
             if (_memberCerts.TryGetValue(m.MgNr, out var entry) && entry.Timestamp >= DateTime.Now.AddDays(-1))