MongoDB:对数据库的读写是并发的吗? [英] MongoDB :are reads/writes to database concurrent?

问题描述

当数百万个线程同时尝试read from和write to MongoDB时会发生什么? db-level, table-level or row-level会发生锁定吗?

What happens when million threads try to read from and write to MongoDB at the same time? does locking happens on a db-level, table-level or row-level?

推荐答案

它发生在数据库级别，但是在Mongo 2.0中，有几种并发方法，例如通过_id字段进行插入/更新.

It happens at db-level, however with Mongo 2.0 there are a few methods for concurrency, such as inserting/updating by the _id field.

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