RabbitMQ v3_6_6_rc2 發布，AMQP消息服務器

jopen 8年前發布 | 10K 次閱讀 RabbitMQ AMQP 中間件

 

        RabbitMQ是實現AMQP（高級消息隊列協議）的消息中間件的一種，最初起源于金融系統，用于在分布式系統中存儲轉發消息，在易用性、擴展性、高可用性等方面表現不俗。消息中間件主要用于組件之間的解耦，消息的發送者無需知道消息使用者的存在，反之亦然。

        AMQP 里主要要說兩個組件：Exchange 和 Queue （在 AMQP 1.0 里還會有變動），如下圖所示，綠色的 X 就是 Exchange ，紅色的是 Queue ，這兩者都在 Server 端，又稱作 Broker ，這部分是 RabbitMQ 實現的，而藍色的則是客戶端，通常有 Producer 和 Consumer 兩種類型。

更新日志

Bug 修復

  • Changing queue mode to lazy could block queue process in certain circumstances.
  • GitHub issue: rabbitmq-server#850
  • Mirroring implementation didn't handle certain internal protocol messages arriving out of order.
  • GitHub issue: rabbitmq-server#922
  • Mirror set changes weren't handled gracefully in certain circumstances (e.g. in the middle of a mirror promotion).
  • GitHub issue: rabbitmq-server#914
  • Mirrored queue could terminate after promotion if HA policy was reapplied during sync.
  • GitHub issue: rabbitmq-server#803
  • Autoheal partition handling mode could run into a multi-node deadlock.
  • GitHub issue: rabbitmq-server#928
  • Queue mirror group membership now correctly handles certain partial partition cases.
  • GitHub issues: rabbitmq-server#950,
  • rabbitmq-server#953
  • Eager queue sync will now stop as soon as a mirror shutdown/unavailability is detected.
  • GitHub issue: rabbitmq-server#975
  • Lazy queues now trigger runtime GC significantly less frequently, making moving data to the message store more efficient.
  • GitHub issue: rabbitmq-server#973
  • Mirroring policies now respect the nodes parameter when re-electing a master.
  • GitHub issue:
  • After a partial network partitions, nodes with newly elected masters will now be more defensive about the (no longer relevant) policy change notifications.
  • GitHub issue: rabbitmq-server#1007
  • Late responses from peers in certain partial network partition scenarios are now ignored by channels.
  • GitHub issue: rabbitmq-server#1005
  • After a partial network partitions, nodes with newly elected masters will now be more defensive about the (no longer relevant) synchronization start requests.
  • GitHub issue: rabbitmq-server#1006
  • Network partition triggered late and duplicate acknowledgements are now ignored/filterd out by queue master processes.
  • GitHub issue: rabbitmq-server#960
  • rabbitmqctl and server startup could be affected by some DNS configurations.
  • GitHub issue: rabbitmq-server#890
  • RPM package was split into two: for CentOS 6 and 7. The latter includes systemd support.
  • GitHub issue: rabbitmq-server#932

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