[
    {erlcass, [
        {cluster_options,[
            {contact_points, <<"127.0.0.1">>},
            {latency_aware_routing, true},
            {token_aware_routing, true},
            {number_threads_io, 4},
            {queue_size_io, 128000},
            {core_connections_host, 1},
            {tcp_nodelay, true},
            {tcp_keepalive, {true, 60}},
            {connect_timeout, 5000},
            {request_timeout, 5000},
            {retry_policy, {default, true}}
        ]}
    ]}
].