forked from cerc-io/plugeth
10181b57a9
* ethdb: add Putter interface and Has method * ethdb: improve docs and add IdealBatchSize * ethdb: remove memory batch lock Batches are not safe for concurrent use. * core: use ethdb.Putter for Write* functions This covers the easy cases. * core/state: simplify StateSync * trie: optimize local node check * ethdb: add ValueSize to Batch * core: optimize HasHeader check This avoids one random database read get the block number. For many uses of HasHeader, the expectation is that it's actually there. Using Has avoids a load + decode of the value. * core: write fast sync block data in batches Collect writes into batches up to the ideal size instead of issuing many small, concurrent writes. * eth/downloader: commit larger state batches Collect nodes into a batch up to the ideal size instead of committing whenever a node is received. * core: optimize HasBlock check This avoids a random database read to get the number. * core: use numberCache in HasHeader numberCache has higher capacity, increasing the odds of finding the header without a database lookup. * core: write imported block data using a batch Restore batch writes of state and add blocks, tx entries, receipts to the same batch. The change also simplifies the miner. This commit also removes posting of logs when a forked block is imported. * core: fix DB write error handling * ethdb: use RLock for Has * core: fix HasBlock comment
45 lines
1.5 KiB
Go
45 lines
1.5 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package ethdb
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// Code using batches should try to add this much data to the batch.
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// The value was determined empirically.
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const IdealBatchSize = 100 * 1024
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// Putter wraps the database write operation supported by both batches and regular databases.
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type Putter interface {
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Put(key []byte, value []byte) error
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}
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// Database wraps all database operations. All methods are safe for concurrent use.
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type Database interface {
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Putter
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Get(key []byte) ([]byte, error)
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Has(key []byte) (bool, error)
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Delete(key []byte) error
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Close()
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NewBatch() Batch
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}
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// Batch is a write-only database that commits changes to its host database
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// when Write is called. Batch cannot be used concurrently.
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type Batch interface {
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Putter
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ValueSize() int // amount of data in the batch
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Write() error
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}
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