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Andronik Ordian 2b48e09b24 upgrade a few dependencies (#7831 )

* upgrade a few dependencies

* make it compile at the expense of duplicate deps

* fix web-wasm and a warning

* introduce activate-wasm-bindgen-features crate

* Revert "introduce activate-wasm-bindgen-features crate"

This reverts commit 5a6e41e683f8a4844c0a735dcd08caabb2313f11.

* add getrandom feature to sc-consensus-aura

2021-01-06 16:12:17 +00:00

src

Happy new year (#7814 )

2021-01-04 09:03:13 +00:00

Cargo.toml

upgrade a few dependencies (#7831 )

2021-01-06 16:12:17 +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