-# The maximum size (in bytes) for snapshot chunks to be sent during sync
-#shard-snapshot-chunk-size=20480000
+# When fragmenting messages thru the akka remoting framework, this is the maximum size in bytes
+# for a message slice.
+#maximum-message-slice-size=20480000
+
+# Enable tell-based protocol between frontend (applications) and backend (shards). Using this protocol
+# should avoid AskTimeoutExceptions seen under heavy load. Defaults to false (use ask-based protocol).
+#use-tell-based-protocol=true
+
+# Tune the maximum number of entries a follower is allowed to lag behind the leader before it is
+# considered out-of-sync. This flag may require tuning in face of a large number of small transactions.
+#sync-index-threshold=10
+
+# Record new transaction allocation stack trace, useful for debugging. This makes the log include
+# the stack trace of the creator of the Tx when there is an exception when the transaction is submitted
+# (e.g. for a failed validation). Defaults to false due to performance impact.
+#transaction-debug-context-enabled=true