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Arkadiy Paronyan 617fa6c0ba State-db refactoring (#12239 )

* Prune discarded blocks immediately

* state-db refactoring part 1

* Some renames

* Get rid of pending state

* Revert "Prune discarded blocks immediately"

This reverts commit b60d98c569e8af18d99087da93f0911d4f24006e.

* Cleanup

* Make clippy happy

* Minor changes

2022-11-08 10:58:02 +00:00

src

State-db refactoring (#12239 )

2022-11-08 10:58:02 +00:00

Cargo.toml

update kvdb & co (#12312 )

2022-10-05 21:07:15 +00:00

README.md

prepping for releasing rc6 (#6922 )

2020-08-20 17:04:42 +02:00

README.md

State database maintenance. Handles canonicalization and pruning in the database. The input to this module is a ChangeSet which is basically a list of key-value pairs (trie nodes) that were added or deleted during block execution.

Canonicalization.

Canonicalization window tracks a tree of blocks identified by header hash. The in-memory overlay allows to get any node that was inserted in any of the blocks within the window. The tree is journaled to the backing database and rebuilt on startup. Canonicalization function selects one root from the top of the tree and discards all other roots and their subtrees.

Pruning.

See RefWindow for pruning algorithm details. StateDb prunes on each canonicalization until pruning constraints are satisfied.

License: GPL-3.0-or-later WITH Classpath-exception-2.0