packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value to the keyspace ID

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables ‘split_column’ given is used (or the first primary key column if the ‘split_column’ field is empty). In the rest of this algorithm’s description, we refer to this column as “the split column”. The split column must

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value(s) for these Secondary

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value to the keyspace ID

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value(s) for these Secondary

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value(s) for these Secondary

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value(s) for these Secondary

packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the next poller cycle. • vt_poller_interval=30: Poll every 30s option to try out the new shards and make sure they will work as intended before committing to move the rest of the traffic. • Table equivalence: The new VReplication feature allows you to materialize tables • The Primary Vindex is used to generate a keyspace ID. • The keyspace ID is validated against the rest of the Vindexes on the table. There must exist a mapping from the column value(s) for these Secondary