基于Erlang的高级消息队列RabbitMQ 3.3.0发布。2014-04-02 新的产品系列。之前版本2014-03-04的3.2.4.遗留产品系列3.1.5 在高级消息队列里，RabbitMQ应该最主流的。此版本的新功能有动态shovels，java Client自动重连，消费者预取等。
This release improves performance in a variety of conditions, adds monitoring information to identify performance bottlenecks, adds dynamically manageable shovels, and allows Java-based clients to reconnect automatically after network failure.
此版本修正了大量 broker 和插件的漏洞，同时也引入了一系列小特性。
Release: RabbitMQ 3.3.0 安全修复和改进 ======================== server ------ 25603 prevent access using the default guest/guest credentials except via localhost (since 1.0.0) LDAP plugin ----------- 26052 do not allow use of password "" when connecting to servers which permit unauthenticated bind (since 2.3.0) 值得关注的改进 ================== server ------ bug 修复 26069 ensure that memory use is bounded when logging crash of large processes (since 1.0.0) 25589 ensure that a queue which needs to reduce its RAM usage but is not receiving any publishes still pages out messages quickly (since 2.0.0) 25991 fix topic routing in the face of multiple bindings that differ only in arguments (e.g. those created by the federation plugin) (since 2.4.0) 26027 ensure autoheal does not hang winner node if 'rabbitmqctl stop_app' issued on other node during healing (since 3.1.0) 26043 ensure autoheal does not crash if multiple autoheal requests occur in quick succession and the leader make different decisions for each (since 3.1.0) 26088 fix failure to delete virtual host if a queue in the virtual host is deleted concurrently (since 1.0.0) (incorrectly reported fixed in 3.2.4) 25374 interpret AMQP field type 'b' as signed byte rather than unsigned, for compatibility with our errata, and the majority of clients (since 1.0.0) 26058 prevent inaccurate (sometimes negative) report of memory use by plugins (since 3.1.0) 26063 prevent spurious rabbit_node_monitor error messages when pausing in pause_minority mode (since 3.2.4) 功能增强 25888 give busy queues a bias towards delivering more messages than they accept, ensuring they tend to become empty rather than huge 26070 automatically reconsume when mirrored queues fail over (and introduce x-cancel-on-ha-failover argument for the old behaviour) 25882 provide 'consumer utilisation' metric to help determine if consumers are being held back by low prefetch counts 26039 ensure rabbitmqctl's formatting of process IDs is more shell-script friendly 25654 allow use of separate modules for authentication and authorisation 25722 explicitly set Erlang distribution port in all circumstances 25910 add process identification information to process dictionary to aid in debugging 25922 log reason why a node considered another node to be down 25860 enforce the rule that object names must be valid UTF-8 strings 25836 prevent deletion of amq.* built-in exchanges, and mark appropriate ones as internal 25817 allow plugins to rewrite AMQP methods 25979 announce cluster-id when clients connect 26042 allow log_levels config item to silence mirrored queue events 26065 ensure config file location is logged even if config file is absent 22525 allow server-wide configuration of channel_max 25627 show current alarms in 'rabbitmqctl status' 性能提升 25957 change semantics of basic.qos global flag in order to allow for greatly enhanced prefetch performance (see http://www.rabbitmq.com/consumer-prefetch.html) 25827,25853 substantially improve performance stopping and starting brokers with many durable queues 26001 improve performance of persistent confirmed messages on spinning disks 24408 improve performance of mandatory publication (very substantially when publishing across clusters) 25939,25942,25943 improve performance reading and writing AMQP (especially reading large messages) 功能移除 25962 remove support for client-sent channel.flow method; basic.qos is superior in all cases 25985 remove support for 'impersonator' tag building & packaging -------------------- bug 修复 25989 put the example config file in the correct directory for generic Unix and standalone Mac, and put a copy in the AppData directory on Windows (since 3.2.0). 26093 Debian: remove obsolete DM-Upload-Allowed field (thanks to Thomas Goirand) 26094 Debian: ensure package can be built multiple times and remove files from debdiff that should not be there (thanks to Thomas Goirand) 功能增强 25844 switch standalone Mac release to 64 bit architecture management plugin ----------------- bug fixes 25868 ensure connections in flow control for a long time still show 'flow' and do not transition to 'blocked' (since 2.8.0) enhancements 24829 provide information about flow control status of internal components, to help find bottlenecks 25876 provide regex option when filtering lists (with thanks to Joseph Weeks) feature removal 25720 remove the redirect from 2.x-era port 55672 to 15672 federation plugin ----------------- enhancements 23906 implement cycle detection for messages forwarded over federation 25985 remove requirement to configure local-username 26042 allow log_levels config item to silence federation events 25979 replace local-nodename with (non-federation-specific) cluster-id 25902 preserve original routing key when forwarding messages via queue federation 25904 tidy up nomenclature in federation status / management shovel plugin ------------- enhancements 24851 introduce "dynamic" shovels, controlled by parameters in a similar way to federation (see http://www.rabbitmq.com/shovel-dynamic.html) 25890 make shovel status rather more informative 25894 introduce "auto-delete" dynamic shovels 25935 allow dynamic shovels to record routing information similarly to federation 26045 default prefetch-count to 1000 rather than unlimited LDAP plugin ----------- enhancements 25785 add 'dn_lookup_bind' to allow lookup of a user's DN before binding 25839 allow specification of SSL options for (e.g.) presenting client certificates when connecting to an LDAP server 26022 support timeouts when connecting to an LDAP server 25570 replace 'as_user_no_password' error with something which makes more sense STOMP plugin ------------ bug fixes 26010 remove examples for the headers exchange that haven't worked since 2010 MQTT plugin ----------- bug fixes 25941 ensure keepalives are implemented completely (since xxx) enhancements 26067 initial support for MQTT 3.1.1 draft 25877 support specifying vhost at the time of connection Web-STOMP plugin ---------------- bug fixes 25896 ensure examples set content-type (since 3.0.0) enhancements 25828 upgrade cowboy to get sec-websocket-protocol support 25913 support SSL (with thanks to James Shiell) JSON-RPC channel plugin ----------------------- feature removal 26029 remove JSON-RPC channel plugin from the official release java client ----------- enhancements 14587 support automatically reconnecting to server(s) if connection is interrupted 26008 make it easier to start a Connection with a custom ExceptionHandler 25833 allow specifying a per-ConnectionFactory ExecutorService 25999 handle running in a security-restricted context (e.g. Google App engine) 25663 improve type safety of ShutdownSignalException "reason" property 26068 improve clarity of AlreadyClosedException reason 26015 make Envelope.toString() do something useful .net client ----------- bug fixes 25911 ensure Subscriptions are informed if a channel closes (since 1.4.0) 25374 interpret AMQP field type 'b' as signed byte rather than unsigned, for compatibility with our errata, and the majority of other clients (since 1.0.0) 25046 ensure timeout establishing connection does not throw System.NotSupportedException (since 1.0.0) 25278 ensure timeout establishing connection does not throw ProtocolVersionMismatchException (since 2.0.0) 26071 ensure attempted use of a closed channel leads to AlreadyClosedException (since 1.0.0) 25082 ensure EventingConsumer sets supertype model field (since 1.0.0) enhancements 25895 support for SSL cert selection and validation callbacks (thanks to "pooleja") 26068 improve clarity of AlreadyClosedException reason erlang client ------------- bug 修复 25374 interpret AMQP field type 'b' as signed byte rather than unsigned, for compatibility with our errata, and the majority of other clients (since 1.0.0) 26050 add missing handle_server_cancel/2 to amqp_gen_consumer_spec.hrl 功能增强 25985 do not require direct connections to specify a username Upgrading ========= To upgrade a non-clustered RabbitMQ from release 2.1.1 or later, simply install the new version. All configuration and persistent message data is retained. To upgrade a clustered RabbitMQ from release 2.1.1 or later, install the new version on all the nodes and follow the instructions at http://www.rabbitmq.com/clustering.html#upgrading . To upgrade RabbitMQ from release 2.1.0, first upgrade to 2.1.1 (all data will be retained), and then to the current version as described above. When upgrading from RabbitMQ versions prior to 2.1.0, the existing data will be moved to a backup location and a fresh, empty database will be created. A warning is recorded in the logs. If your RabbitMQ installation contains important data then we recommend you contact support at rabbitmq.com for assistance with the upgrade.