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authorPéter Szilágyi <peterke@gmail.com>2018-06-21 17:28:05 +0800
committerFelix Lange <fjl@users.noreply.github.com>2018-06-21 17:28:05 +0800
commitd926bf2c7e3182d694c15829a37a0ca7331cd03c (patch)
treec2d3ddd85941a231fb05de46c36703273d11814a /p2p
parent8db8d074e2fff547e9d85169018e03f89b5975a1 (diff)
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trie: cache collapsed tries node, not rlp blobs (#16876)
The current trie memory database/cache that we do pruning on stores trie nodes as binary rlp encoded blobs, and also stores the node relationships/references for GC purposes. However, most of the trie nodes (everything apart from a value node) is in essence just a collection of references. This PR switches out the RLP encoded trie blobs with the collapsed-but-not-serialized trie nodes. This permits most of the references to be recovered from within the node data structure, avoiding the need to track them a second time (expensive memory wise).
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