Add CACHE_PREFIX to the .env.example file

We had some problems with multiple BookStack instances using the same caching server. Perhaps it's a good idea to have this available in the `.env.example` file.

diff --git a/.env.example b/.env.example
index 80afb6274abbc6c31b15e4919ceead8a5419c033..5f31238e3d936dcc6e747e76b07e7c0ce506d211 100644 (file)
--- a/.env.example
+++ b/.env.example
@@ -20,6 +20,8 @@ SESSION_DRIVER=file
 #CACHE_DRIVER=memcached
 #SESSION_DRIVER=memcached
 QUEUE_DRIVER=sync
+# A different prefix is useful when multiple bookstack instances use the same caching server
+CACHE_PREFIX=bookstack
 
 # Memcached settings
 # If using a UNIX socket path for the host, set the port to 0