polkadot_sdk_docs/reference_docs/state.rs
1//! # State
2//!
3//! The state is abstracted as a key-value like database. Every item that
4//! needs to be persisted by the [State Transition
5//! Function](crate::reference_docs::blockchain_state_machines) is written to the state.
6//!
7//! ## Special keys
8//!
9//! The key-value pairs in the state are represented as byte sequences. The node
10//! doesn't know how to interpret most the key-value pairs. However, there exist some
11//! special keys and its values that are known to the node, the so-called
12//! [`well-known-keys`](sp_storage::well_known_keys).