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Benjamin Kampmann
2416aa7999
* Bump version * update test-utils crates to be ready for publishing * adding changelog * Adding automaticly generated READMEs * fixing versions * another version mishap
16 lines
816 B
Markdown
16 lines
816 B
Markdown
State database maintenance. Handles canonicalization and pruning in the database. The input to
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this module is a `ChangeSet` which is basically a list of key-value pairs (trie nodes) that
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were added or deleted during block execution.
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# Canonicalization.
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Canonicalization window tracks a tree of blocks identified by header hash. The in-memory
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overlay allows to get any node that was inserted in any of the blocks within the window.
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The tree is journaled to the backing database and rebuilt on startup.
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Canonicalization function selects one root from the top of the tree and discards all other roots and
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their subtrees.
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# Pruning.
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See `RefWindow` for pruning algorithm details. `StateDb` prunes on each canonicalization until pruning
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constraints are satisfied.
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License: GPL-3.0-or-later WITH Classpath-exception-2.0 |