Scatter/Gather — One Slow Partition Ruins Every Search · Partitioning

Scatter/Gather — One Slow Partition Ruins Every Search · Partitioning · Systems DecodedOne search, six partitions. Watch the clock rather than the results. Fan-out reads inherit the tail latency of the worst partition, and that tail grows with the cluster. MongoDB, Cassandra and Elasticsearch secondary-index queries · DynamoDB GSIs take the other side of the trade