Crate sc_client_db

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Client backend that is backed by a database.

Canonicality vs. Finality

Finality indicates that a block will not be reverted, according to the consensus algorithm, while canonicality indicates that the block may be reverted, but we will be unable to do so, having discarded heavy state that will allow a chain reorganization.

Finality implies canonicality but not vice-versa.



  • State backend that’s useful for benchmarking
  • RocksDB-based offchain workers local storage.




Type Definitions

  • Hash type that this backend uses for the database.
  • DB-backed patricia trie state, transaction type is an overlay of changes to commit.
  • Builder for DbState.