Janusgraph Servers start throwing Exceptions when load increases

We have 10 instances of Janusgraph servers with 1 CPU each and 10GB of memory limit. It works fine when the number of requests are not much, but when we increase the request load, every instance of server starts throwing "Connection reset by peer" error. Previously we were facing idle connection closing issue, for which we added below configuration in our servers to resolve: evaluationTimeout: 0 idleConnectionTimeout: 0 This resolved the connection closing issue for us, but still we are getting "Connection reset by peer" when load is huge. NOTE: Here these servers are for writing the data to cassandra as a backend storage. Any clue about the cause ?