diff --git a/README.md b/README.md
index 8013cc5..39d7a90 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,9 @@
 # PDF Aggregation Statistics
 
-This is a public API to get specific statistics from the PDF Aggregation Service.
+This is a public API to get specific statistics from the PDF Aggregation Service.<br>
+This service is designed to respond as fast as possible, by cashing the relevant data in memory, instead of running new queries to the database, for every request.
+The cached data is updated every 6 hours.
+<br>
 <br>
 
 **Statistics API**: