A single Solana transaction can pack multiple instructions. Transactions are atomic: if any instruction reverts or panics, all state modifications made by preceding instructions in that transaction are rolled back.
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Architecture · easy
12. Transaction Atomicity and Instructions
All-or-nothing execution of multi-instruction transactions.
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Check your understanding
1. If the 3rd instruction in a 4-instruction transaction fails, what happens to instructions 1 and 2?
2. What is the maximum serialized packet size of a Solana transaction?
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