1 files changed, 19 insertions, 0 deletions
diff --git a/src/SMAPI.Web/Framework/Caching/BaseCacheRepository.cs b/src/SMAPI.Web/Framework/Caching/BaseCacheRepository.cs
new file mode 100644
index 00000000..f5354b93
--- /dev/null
+++ b/src/SMAPI.Web/Framework/Caching/BaseCacheRepository.cs
@@ -0,0 +1,19 @@
+using System;
+
+namespace StardewModdingAPI.Web.Framework.Caching
+{
+    /// <summary>The base logic for a cache repository.</summary>
+    internal abstract class BaseCacheRepository
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Whether cached data is stale.</summary>
+        /// <param name="lastUpdated">The date when the data was updated.</param>
+        /// <param name="staleMinutes">The age in minutes before data is considered stale.</param>
+        public bool IsStale(DateTimeOffset lastUpdated, int staleMinutes)
+        {
+            return lastUpdated < DateTimeOffset.UtcNow.AddMinutes(-staleMinutes);
+        }
+    }
+}