emqttd 0.13.0-beta 版本正式发布。支持基于 Token Bucket/Leaky Bucket 算法的速率控制(Rate Limiting)。升级 esockd 库到3.0版本，支持参数化的Socke连接模块。改进MQTT TCP连接数据收发，采用全异步模式。
改进升级
Protocol Compliant - Session Present Flag (#163)
Compilation fails if repo is cloned with a different name (#348)
emqttd_client: replace gen_tcp:send with port_command (#358)
TCP sndbuf, recbuf, buffer tuning (#359)
emqttd_client.erl to handle 'inet_async', 'inet_reply' properly (#360)
Refator the client/session management design
Bug修复
Cannot kick transient client out when clientId collision (#357)
Fix the order of emqttd_app:start_server/1 (#367)
emqttd_session:subscribe/2 will crash (#374)
性能测试
benchmark for 0.13.0 release
3.1G memory and 50% CPU/core:
Connections: 250K
Subscribers: 250K
Topics: 50K
Qos1 Messages/Sec In: 4K
Qos1 Messages/Sec Out: 20K
Traffic In(bps): 12M+
Traffic Out(bps): 56M+
Dashboard插件
Bugfix: emqttd-0.12.3 release: metrics are not right (emqttd_dashboard#36)
Bugfix: No Overview broker informations on non-anonymous sessions (emqttd_dashboard#33)
Improve: Overview page add new metrics (emqttd_dashboard#35)
MySQL认证插件
Improve: emqtt_acl_mysql function_clause error bug (emqttd_plugin_mysql#4)
PgSQL认证插件
Improve: Auto reconnect plugins (emqttd_plugin_pgsql#4)
Stomp协议插件
Improve: upgrade to esockd 3.0
软件详情：http://emqtt.io/
下载地址：http://emqtt.io/downloads
来自:开源中国社区
