const QOS_SYNCWRITES_NONE = 1; // replication only supports eventual consistency or less
const QOS_SYNCWRITES_BE = 2; // best effort synchronous with limited retries
const QOS_SYNCWRITES_QC = 3; // write quorum applied directly to state machines where R+W > N
const QOS_SYNCWRITES_SS = 4; // strict-serializable, nodes refuse reads if possible stale
const QOS_SYNCWRITES_NONE = 1; // replication only supports eventual consistency or less
const QOS_SYNCWRITES_BE = 2; // best effort synchronous with limited retries
const QOS_SYNCWRITES_QC = 3; // write quorum applied directly to state machines where R+W > N
const QOS_SYNCWRITES_SS = 4; // strict-serializable, nodes refuse reads if possible stale