diff --git a/crawler/.env.sample b/crawler/.env.sample
index 41c5d7f..567d519 100644
--- a/crawler/.env.sample
+++ b/crawler/.env.sample
@@ -1,3 +1,8 @@
 # Copy me to .env and source me
 
 export ROUTING_API_KEY="<CHANGE ME>" # fetch from https://console.cloud.google.com/google/maps-apis/; prices - https://developers.google.com/maps/billing-and-pricing/pricing
+
+# export DB_CONNECTION_STRING="mysql://wrongmove:wrongmove@localhost:3306/wrongmove" # example for mysql
+export DB_CONNECTION_STRING="sqlite:///data/wrongmove.db" # by default use SQLite locally
+export CELERY_BROKER_URL="redis://localhost:6379/0" # processing background tasks
+export CELERY_RESULT_BACKEND="redis://localhost:6379/1"