是否可以在MongoDB之上实现多版本并发控制(MVCC)? [英] Is it possible to implement Multi-Version Concurrency Control (MVCC) on top of MongoDB?

问题描述

对我而言，MongoDB是一个很棒的数据库.但是，在某些情况下，我确实需要原子多文档事务.例如，在帐户之间转移事物(例如金钱或名誉)，这需要完全成功或完全失败.

MongoDB is to me a great database. However there are cases where I really need atomic multi-document transactions. For example to transfer things (like money or reputation) between accounts and this needs to either succeed completely or fail completely.

我想知道是否有可能通过实现MultiVersion并发控制模式的库与MongoDB进行交互.

I wonder if it would be possible to interact with MongoDB through a library implementing the MultiVersion Concurrency Control pattern.

关于表演有多糟糕? 使用混合方法是否可能且有利可图，仅在必要时使用'mongo-mvcc'库，而仅在单个文档上工作时使用传统的db连接，否则会破坏mvcc的东西吗?

How bad would it be concerning performances? Would it be possible and profitable to use a hybrid approach, using the 'mongo-mvcc' library only when necessary and the traditional db connection when working only on a single document or would this break the mvcc stuff ?

推荐答案

最简单的方法是使用锁(两阶段提交)，尽管在某些情况下这不是很有效.为了获得更高的并发性，可以在Mongo的顶部实现某种MVCC.本文提供了很好的描述:

The simplest way is to use locks (two-phase commit), although this is not very efficient in some cases. For higher concurrency some kind of MVCC can be implemented on the top of Mongo. This article provides a good description:

http://highlyscalable.wordpress.com/2012 /01/07/mvcc-transactions-key-value/

这篇关于是否可以在MongoDB之上实现多版本并发控制(MVCC)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！