diff --git a/example.conf b/example.conf
index ddc1d2f..34d6297 100644
--- a/example.conf
+++ b/example.conf
@@ -12,6 +12,15 @@
     workers => 0
   },
 
+  # Per worker in-memory caches. The total footprint is workers * max_keys *
+  # size of a cached result, so keep max_keys small - neighbourhood results
+  # contain one vector per neighbour. 0 disables the respective cache.
+  cache => {
+    max_keys             => 50,   # neighbourhood (paradigmatic/syntagmatic) results
+    collocators_max_keys => 200,  # classic collocator profiles (JSON)
+    profiles_max_keys    => 200   # similar profiles (JSON)
+  },
+
   w2v => {
     vecs => "example-models/wpd19_10000/wpd19_10000.vecs",
     # compare_to => "https://corpora.ids-mannheim.de/openlab/derekovecs", # compare results to this derekovecs instance