如何在windows Server 2008 R2下突破Rabbitmq的socket限制数
利用Rabbitmq进行各类业务系统（如SAP、OA、EHR、KMS、访客系统、AD等）的集成和接口，已有很长一段时间了，初步建立了企业服务总线（ESB）。随着新业务系统的不断接入到ESB中，在实践中也发现了一些问题并总结了一些经验，下文主要介绍如何在windows下突破Rabbitmq的socket限制数，以便为需要使用的同学分享一些实际经验，后续将陆续分享一些技术经验。1、 RabbitMQ_Limits文档说明
Status of node rabbit@MYSERVER ...
[{pid,6604},
{running_applications,
[{rabbitmq_management,"RabbitMQ Management Console","2.8.2"},
{xmerl,"XML parser","1.3"},
{rabbitmq_management_agent,"RabbitMQ Management Agent","2.8.2"},
{amqp_client,"RabbitMQ AMQP Client","2.8.2"},
{rabbit,"RabbitMQ","2.8.2"},
{os_mon,"CPOCXC 138 46","2.2.8"},
{sasl,"SASLCXC 138 11","2.2"},
{rabbitmq_mochiweb,"RabbitMQ Mochiweb Embedding","2.8.2"},
{webmachine,"webmachine","1.7.0-rmq2.8.2-hg"},
{mochiweb,"MochiMedia Web Server","1.3-rmq2.8.2-git"},
{inets,"INETSCXC 138 49","5.8"},
{mnesia,"MNESIACXC 138 12","4.6"},
{stdlib,"ERTSCXC 138 10","1.18"},
{kernel,"ERTSCXC 138 10","2.15"}]},
{os,{win32,nt}},
{erlang_version,"Erlang R15B (erts-5.9) \n"},
{memory,
[{total,22807872},
{processes,8644230},
{processes_used,8644210},
{system,14163642},
{atom,495069},
{atom_used,485263},
{binary,665136},
{code,9611946},
{ets,877468}]},
{vm_memory_high_watermark,0.20002174609205853},
{vm_memory_limit,858993459},
{disk_free_limit,4294500352},
{disk_free,26035458048},
{file_descriptors,
[{total_limit,924},
{total_used,24},
{sockets_limit,829},默认的限制sockets数为829
{sockets_used,22}]},
{processes,[{limit,1048576},{used,388}]},
{run_queue,0},
{uptime,72329}]
1、 如何在windows下扩展sockets数量，提高吞吐量？
（1）、需要在windows系统环境变量中设置erlang的ERL_MAX_PORTS
（2）重启RabbitMQ服务才能正式生效
（3）扩展后的最终效果如下：
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