RabbitMQ 3.5.7 发布，AMQP 消息服务器
欢迎加入运维网交流群:263444886RabbitMQ 3.5.7 是一个可用的 bug 修复版本，主要更新如下：服务器
Bug 修复
[*] Fix a race condition that could prevent nodes from stopping.
GitHub issue: rabbitmq-server#465
[*] file_handle_cache:clear_read_cache/0 no longer silently fails.
The function is mean to be used with rabbitmqctl eval in environments where
in-process buffering of file data is enabled.
GitHub issue: rabbitmq-server#436
[*]
Default RABBITMQ_PLUGINS_DIR value on Windows should be calculated as> server installation directory, not RABBITMQ_BASE.
If you override RABBITMQ_BASE, you may need to copy plugins from %RABBITMQ_BASE%\plugins
to the plugins directory under RabbitMQ installation.
GitHub issue: rabbitmq-server#433
[*] When rabbitmq-server failed to start due to an unreadable config file, exit code was 0
GitHub issue: rabbitmq-server#464
[*] Overriding RABBITMQ_LOGS and RABBITMQ_SASL_LOGS on Windows prevented node from starting.
GitHub issue: rabbitmq-server#375
[*] Some startup code bits assumed IPv4 is enabled in the environment
GitHub issue: rabbitmq-server#117
[*] More robust disk monitor, fewer errors logged.
GitHub issue: rabbitmq-server#91
[*] rabbitmqctl forget_cluster_node no longer attempts to impersonate live
(reachable) nodes.
GitHub issue: rabbitmq-server#470
[*] rabbitmq-plugins was using an incorrect env variable.
GitHub issue: rabbitmq-server#451
提升
[*] RAM watermark can be configured as an absolute value in bytes (just like with disk space monitoring):
[{rabbit, [{vm_memory_high_watermark, {absolute, 1073741824}}]}]. GitHub issue: rabbitmq-server#207
[*] rabbitmqctl authenticate_user is a new command that can be used to test user authentication.
GitHub issue: rabbitmq-server#119
[*] rabbitmqctl now supports exclusive as a queue info item.
Contributed by Alexey Lebedeff (@binarin).
GitHub issue: rabbitmq-server#371
下载页面：rabbitmq_v3_5_7
RabbitMQ 是由 LShift 提供的一个 Advanced Message Queuing Protocol (AMQP) 的开源实现，由以高性能、健壮以及可伸缩性出名的 Erlang 写成，因此也是继承了这些优点。
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：
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