Struct TreeNode 

pub struct TreeNode {
    pub children: FxHashMap<LocalBlockHash, NodeId>,
    pub parent: Option<NodeId>,
    pub key: Vec<LocalBlockHash>,
    pub value: Vec<KvPageId>,
    pub lock_ref: usize,
    pub last_access_time: Instant,
}

A single node in the radix tree.

Fields

children: FxHashMap<LocalBlockHash, NodeId>

Children keyed by the first complete page on the child edge.

parent: Option<NodeId>

key: Vec<LocalBlockHash>

One content identity per complete page stored on this compressed edge.

The mocker intentionally uses the router’s 64-bit local block hash as page identity so completed radix state does not retain token IDs. Consequently, as in router-side indexing, hash collisions are treated as identical pages rather than guarded by an exact-token comparison.

value: Vec<KvPageId>

One physical page ID per key. Length = key.len().

lock_ref: usize

Walk-to-root reference count (protected when > 0).

last_access_time: Instant

Monotonic timestamp for LRU eviction.