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⚡Transaction Broadcasting
ADVANCED
How do you prevent sending duplicate transactions in a concurrent system?
transactionsconcurrencyidempotency
TAP TO REVEALANSWERTAP TO FLIP BACK
Use idempotency keys (unique per user action) stored in DB with UNIQUE constraint. Before building a tx, check if idempotency key exists. If yes, return existing result. Also maintain a DB-backed nonce lock per signer address to prevent nonce collisions.