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RabbitMQ v3.6.4 Milestone 1 发布，AMQP消息服务器

RabbitMQ是实现AMQP（高级消息队列协议）的消息中间件的一种，最初起源于金融系统，用于在分布式系统中存储转发消息，在易用性、扩展性、高可用性等方面表现不俗。消息中间件主要用于组件之间的解耦，消息的发送者无需知道消息使用者的存在，反之亦然。

AMQP 里主要要说两个组件：Exchange 和 Queue （在 AMQP 1.0 里还会有变动），如下图所示，绿色的 X 就是 Exchange ，红色的是 Queue ，这两者都在 Server 端，又称作 Broker ，这部分是 RabbitMQ 实现的，而蓝色的则是客户端，通常有 Producer 和 Consumer 两种类型。

更新日志

Server

Bug修复

Nodes on Windows will successfully start if Erlang is installed in a directory with spaces
in the path.

GitHub issue: rabbitmq-server#859
Node health check is now node-local, is it was meant to be.

GitHub issue: rabbitmq-server#818
Queue deletion and termination will no longer leave "tomb stone" messages in message store
files. This eliminates the confusing behavior when a node or cluster having no messages
enqueued could have many thousands of such "marker" messages in the message store.

GitHub issue: rabbitmq-server#839

功能增强

Erlang VM scheduler binding type default has changed to db. This means fewer
CPU context switches for some workloads.

GitHub issue: rabbitmq-server#612

Management Plugin

Bug修复

HTTP API is now compatible with Erlang 19.0.

GitHub issue: rabbitmq-management#244
Temporary tables are no longer named using atoms, preventing a potential
exhaustion of the runtime atom table.

GitHub issue: rabbitmq-management#245
Runtime metric charts now have a description pop-up associated with them.

GitHub issue: rabbitmq-management#247