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[更新动态] 【站长推荐】RocksDB 4.0 发布,key-value 存储系统【顶】

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  • TA的每日心情
    奋斗
    2015-7-9 13:05
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    [LV.3]偶尔看看II

    tjz2000 发表于 2015-10-22 13:46:19 | 显示全部楼层 |阅读模式
    【重大新闻】 RocksDB 4.0 发布,更新内容如下:
    新特性


    • Added support for transactions.  See include/rocksdb/utilities/transaction.h for more info.
    • DB::GetProperty() now accepts "rocksdb.aggregated-table-properties" and "rocksdb.aggregated-table-properties-at-levelN", in which case it returns aggregated table properties of the target column family, or the aggregated table properties of the specified level N if the "at-level" version is used.
    • Add compression option kZSTDNotFinalCompression for people to experiment ZSTD although its format is not finalized.
    • We removed the need for LATEST_BACKUP file in BackupEngine. We still keep writing it when we create new backups (because of backward compatibility), but we don't read it anymore.
    公共 API 变化

    • Removed class Env::RandomRWFile and Env::NewRandomRWFile().
    • Renamed DBOptions.num_subcompactions to DBOptions.max_subcompactions to make the name better match the actual functionality of the option.
    • Added Equal() method to the Comparator interface that can optionally be overwritten in cases where equality comparisons can be done more efficiently than three-way comparisons.
    • Previous 'experimental' OptimisticTransaction class has been replaced by Transaction class.
    下载页面:RocksDB 4.0
    RocksDB 是一个来自 facebook 的可嵌入式的支持持久化的 key-value 存储系统,也可作为 C/S 模式下的存储数据库,但主要目的还是嵌入式。RocksDB 基于 LevelDB 构建。关于 RocksDB 的性能说明

    RocksDB

    RocksDB

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