Apache Traffic Server 6.0.0 发布
Traffic Server 是一套快速、模块化的兼容 HTTP/1.1 的反向代理服务器,与 Nginx 和 Squid 类似,目前该项目已经转到 Apache 基金会。
Traffic Server设计的思想是将一个大系统划分为若干个小的子系统,每个子系统负责专门的任务或应用。比如,Event子系统负责提供任务调度服务,Net子 系统负责提供网络服务。每个子系统抽象为一个Processor,如图1所示。这种高内聚低耦合的设计原则使系统具有更好的重用性,维护性和扩展性。例 如,如果hostDBProcessor需要进行DNS解析,可以直接调用dnsProcessor的相关函数,而无需关注DNS解析的细 节;dnsProcessor也只需封装DNS请求和解析DNS应答,和网络相关的功能可以调用netProcessor来完成。
Apache Traffic Server 6.0.0 发布,此版本现已提供下载:http://trafficserver.apache.org/downloads
当从 5.x 升级至 6.0 版本时,需要重新编译用户编写的插件。如果从 3.2.0+ 版本升级至 v6.0.0,清闲保存好缓存,详细升级指导请看:https://cwiki.apache.org/confluence/display/TS/Upgrading+to+v6.0
这是第二个支持 HTTP/2 的版本,现在已经趋于稳定。此版本不再支持 RHEL5。
主要改进如下:
日志记录组件
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应用协议 (HTTP/2, HTTP/1, SPDY/3.1), with %<cqpv>.
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Milestones/state times of a transactions to get a better understanding of where time for responses is spent.
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SSL session 攻击或者丢失
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连接复用或者请求新连接
Wiretracing TLS
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Ability to wire trace and log TLS connections. See "New Configuration Options" below.
PCRE Jit
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Added support for PCRE Jit for regex_map. Automatically used when compiled on a system that supports it. There is a speed improvement over normal PCRE matching.
将废弃的特性
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traffic_line command line program will be removed in the 7.0.0 release and is replaced by the command line program traffic_ctl
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SPDY support will be removed in the 7.0.0 release and is replaced by only supporting HTTP/2
新配置选项
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proxy.config.cop.init_sleep_time
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proxy.config.http.websocket.max_number_of_connections
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proxy.config.net.max_connections_active_in
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proxy.config.http.max_post_size
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proxy.config.http.cache.generation
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proxy.config.http.cache.open_write_fail_action
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proxy.config.net.inactivity_check_frequency
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proxy.config.net.event_period
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proxy.config.net.accept_period
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proxy.config.net.retry_delay
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proxy.config.net.throttle_delay
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proxy.config.cache.read_while_writer.max_retries
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proxy.config.cache.read_while_writer_retry.delay
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proxy.config.log.periodic_tasks_interval
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proxy.config.ssl.handshake_timeout_in
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proxy.config.ssl.wire_trace_enabled
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proxy.config.ssl.wire_trace_addrproxy.config.ssl.wire_trace_percentage
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proxy.config.ssl.wire_trace_server_name
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proxy.config.http2.accept_no_activity_timeout
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proxy.config.http2.no_activity_timeout_in
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proxy.config.allocator.hugepages
新指标
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HTTP/2 Metrics
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proxy.process.http2.total_client_streams
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proxy.process.http2.total_transactions_time
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proxy.process.http2.total_client_connections
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proxy.process.http2.connection_errors
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proxy.process.http2.stream_errors
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proxy.process.http2.current_client_sessions
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proxy.process.http2.current_client_streams
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stream_editor - Plugins for modifying the content of a response using a string or regular expression substitution
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mp4 - Allows for starting at the offset of a mp4 video stream
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cache_promote - Give better granularity on when an object is allowed to be written into the cache.
新插件(实验性)
更多改进内容请看:https://cwiki.apache.org/confluence/display/TS/What%27s+New+in+v6.0.x
来自:http://www.oschina.net/news/66440/apache-traffic-server-6-0-0-is-released