diff --git a/README.md b/README.md
index 769c337..ad0d643 100644
--- a/README.md
+++ b/README.md
@@ -182,6 +182,8 @@ If non-zero, all array elements fetched from the database will be stored in an i
 
 All elements written to the array by the application will also be stored in an in-memory *write cache*, and flushed to the database every `cacheTtl` seconds.  
 
+The cache is also flushed on shutdown by deferring an event loop callback, so make sure `EventLoop::run();` is being used to run the application, to make sure all data is flushed correctly (alternatively, `saveDbProperties` can be used to manually flush the cache on shutdown when using automatic properties, and `flushCache` in manual mode).  
+
 If the array has an [object value type (ValueType::OBJECT)](#key-and-value-types), write caching is disabled.  
 
 If `cacheTtl` is 0, read and write caching is disabled.