pub const SPARSE_TRIE_MAX_NODES_SHRINK_CAPACITY: usize = 1_000_000;Expand description
Default node capacity for shrinking the sparse trie. This is used to limit the number of trie nodes in allocated sparse tries.
Node maps have a key of Nibbles and value of SparseNode.
The size_of::<Nibbles> is 40, and size_of::<SparseNode> is 80.
If we have 1 million entries of 120 bytes each, this conservative estimate comes out at around 120MB.