Local Fee Market

Solana's per-account fee pricing model where priority fee competition is scoped to transactions contending for the same writable accounts, rather than applying a single global fee to all transactions. Congestion on a popular DEX pool or NFT mint drives up priority fees only for transactions touching those specific accounts, while unrelated transactions can land cheaply in parallel. This design is a direct consequence of Solana's parallel execution model and account-level locking.