A transaction is a set of operations that should happen atomically. Exactly which operations that may include is up for discussion, but think reads, writes, deletes, and possibly index lookups for now.

Client-Side Transactions

1. Client reads A, B, C
2. Client reserves txid
3. Client writes A, B, C with lien to txid for some time (how long? see below)
4. Client writes T with (A', B', C') at txid
5. Client writes A' into A, B' into B, C' into C
6. Client deletes T

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