Add debug logging for Redis cache hits/misses

Now logs when cache entries are retrieved (HIT/MISS) and when they're stored

allstarr/Services/Common/RedisCacheService.cs

@@ -56,7 +56,16 @@ public class RedisCacheService
 
         try
         {
-            return await _db!.StringGetAsync(key);
+            var value = await _db!.StringGetAsync(key);
+            if (value.HasValue)
+            {
+                _logger.LogDebug("Redis cache HIT: {Key}", key);
+            }
+            else
+            {
+                _logger.LogDebug("Redis cache MISS: {Key}", key);
+            }
+            return value;
         }
         catch (Exception ex)
         {
@@ -93,7 +102,12 @@ public class RedisCacheService
 
         try
         {
-            return await _db!.StringSetAsync(key, value, expiry);
+            var result = await _db!.StringSetAsync(key, value, expiry);
+            if (result)
+            {
+                _logger.LogDebug("Redis cache SET: {Key} (TTL: {Expiry})", key, expiry?.ToString() ?? "none");
+            }
+            return result;
         }
         catch (Exception ex)
         {