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Core Protocolaccounts-db

AccountsDB

Also known asAccountsDb
The persistent storage layer for all Solana accounts. AccountsDB stores account data in memory-mapped AppendVec files, indexed by pubkey and slot. It supports fast lookups, handles account deduplication across slots, and periodically cleans up dead accounts. AccountsDB is the largest consumer of validator disk space.
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A serialized copy of the full accounts state at a rooted slot, used for fast validator bootstrapping. Full snapshots con...

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AppendVec

A memory-mapped, append-only file used by AccountsDB to store account data. Each AppendVec corresponds to a specific slo...