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How does write sharding work?
This interview card answers: How does write sharding work? Technique. Suffix shards on writes; fan-in or GSI on read. Warn about shard count vs fan-in cost.
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What this card says
What it is
Technique.
Why it matters
Suffix shards on writes; fan-in or GSI on read.
write sharding
How / example
Warn about shard count vs fan-in cost.
MNC: pick shard count.