diff --git a/EnvelopeGenerator.Application/Common/CacheKey.cs b/EnvelopeGenerator.Application/Common/CacheKey.cs
new file mode 100644
index 00000000..993564cf
--- /dev/null
+++ b/EnvelopeGenerator.Application/Common/CacheKey.cs
@@ -0,0 +1,13 @@
+namespace EnvelopeGenerator.Application.Common;
+
+// TODO: merge other cache keys here as well, e.g. for templates, etc.
+/// <summary>
+/// 
+/// </summary>
+public static class CacheKey
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public static readonly Guid DefaultConfig = Guid.NewGuid();
+}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Application/Services/ConfigService.cs b/EnvelopeGenerator.Application/Services/ConfigService.cs
index 4b29fa6f..4d86781d 100644
--- a/EnvelopeGenerator.Application/Services/ConfigService.cs
+++ b/EnvelopeGenerator.Application/Services/ConfigService.cs
@@ -7,6 +7,7 @@ using Microsoft.Extensions.Logging;
 using EnvelopeGenerator.Application.Common.Dto;
 using EnvelopeGenerator.Application.Common.Interfaces.Repositories;
 using EnvelopeGenerator.Application.Common.Interfaces.Services;
+using EnvelopeGenerator.Application.Common;
 
 namespace EnvelopeGenerator.Application.Services;
 
@@ -16,8 +17,6 @@ namespace EnvelopeGenerator.Application.Services;
 [Obsolete("Use MediatR")]
 public class ConfigService : ReadService<IConfigRepository, ConfigDto, Config, int>, IConfigService
 {
-	private static readonly Guid DefaultConfigCacheId = Guid.NewGuid();
-
 	private readonly IMemoryCache _cache;
 
     private readonly ILogger<ConfigService> _logger;
@@ -62,7 +61,7 @@ public class ConfigService : ReadService<IConfigRepository, ConfigDto, Config, i
 	/// </exception>
 	public async Task<ConfigDto> ReadDefaultAsync()
     {
-        var config = await _cache.GetOrCreateAsync(DefaultConfigCacheId, _ => ReadFirstAsync().ThenAsync(
+        var config = await _cache.GetOrCreateAsync(CacheKey.DefaultConfig, _ => ReadFirstAsync().ThenAsync(
             Success: config => config,
             Fail: (mssg, ntc) =>
             {