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How do you decide to put as sharding-key? Something like 'user_id'. What if a user becomes too big? Something like id=uuid. Then you lose the semi-free user_id
by ddorian43 12y ago
How do you decide to put as sharding-key? Something like 'user_id'. What if a user becomes too big? Something like id=uuid. Then you lose the semi-free user_id index.
I believe the holy-grail of sharding is range-based (bigtable, hbase, hypertable etc).
- needusername 12y ago> I believe the holy-grail of sharding is range-based You mean like Oracle has supported since version 8 or so?
- ddorian43 12y agoIf it is automatic (meaning you don't have to manually define the ranges)+ ranges can split/join, then probably yes.