v1.4.1

This is a milestone version that provides enhancements for cluster flow control.

Features / Enhancements

• Improve Sentinel dashboard for cluster flow control management (#384)
• Support multiple tokens per request entry (#380)
• Improve retry and stop control logic in cluster token client
• Improve cluster state manager to modify cluster mode more flexible
• Enhance config and log for cluster token client
• Improve namespace register logic for embedded cluster token server mode
• Add cluster embedded mode handling logic for parameter flow checker
• Add basic monitoring command API for cluster token server
• Upgrade nacos-client version and construct NacosDataSource by Properties (#348, @fangjian0423)
• Make the default statistic max RT value TIME_DROP_VALVE configurable (#292, @cdfive)
• Rearrange the constructor of LeapArray to match with interval and sampleCount property
• Refinement for heartbeat logic in sentinel-transport related module
• Polish cluster flow control demo to be more instructive
• Add some unit test for sentinel-transport-netty-http module (#321, @cdfive)

Bug fixes

• Fix bug in search logic of metric files (#331)
• Fix wrong empty check in FlowRuleApiPublisher of Sentinel dashboard (#353, @foreveryang321)

Thanks for the contributors: @allencloud, @canglang1973, @cdfive, @fangjian0423, @foreveryang321, @jz0630, @YoungHu

v1.4.0

This is a significant milestone version that provides cluster flow control feature.

Note: The cluster flow control module requires JDK 1.7 or later versions.

Features / Enhancements

• Add cluster flow control interface and default implementation (#257, #294)
  • Add basic token client and server interface in Sentinel Core
  • Add cluster common module for common interface, entity and registry
  • Add cluster client module for default token client implementation (using Netty as transport library)
  • Add cluster server module for default token server implementation
  • Add basic cluster config and rule management mechanism
  • Support flexible transformation of cluster mode (between client and embedded server)
  • Add basic support for cluster mode in Sentinel dashboard (#302)
• Add prioritized entry support in ProcessorSlot and SphU (#255)
• Add "warmup with rate limiting" implementation for traffic shaping (#220)
• Add HTTP-method level flow control support in Sentinel Web Servlet Filter (#282, @ro9er)
• Add client ip property in transport common module to resolve ip problem in Docker env (#261, @nick-tan)
• Optimize the click sensitivity of dashboard's sidebar menu (#268, @cdfive)
• Extract annotation support base class for customized AOP extensions (#223, #214, @bitonly)
• Extract flow rule checker from FlowRule (#234)
• Improve log info and condition about fetching metrics in Sentinel dashboard (#219, @xcaspar)

Bug fixes

• Fix padding issue of charts in monitoring page of Sentinel dashboard (fixes #251, @cdfive)
• Support parameters in entry of Sentinel annotation support to enable parameter flow control
• Support automatic exception tracing in Sentinel annotation support

Thanks for the contributors: @bitonly, @canglang1973, @cdfive, @nick-tan, @ro9er, @xcaspar

v1.3.0-GA

This is a production-ready GA version including enhancements for Sentinel dashboard and some other enhancements / bug fixes.

Features / Enhancements

• Add support for configuring authority rules and parameter rules in Sentinel Dashboard (#176, #189)
• Add support for degrading by exception count per minute (#174)
• @SentinelResource annotation supports method name as default resource name (#187)
• Enhance rule checking in rule managers and Sentinel Dashboard (#202)
• Support config the log base directory via system property
• Support config whether the log name contains pid
• Support to retry when port specified has been used in sentinel-transport-netty-http (#161, @jasonjoo2010)
• LogBase support variable arguments (#161, @jasonjoo2010)

Bug fixes

• Fix bug for wrong coordinate scaling of QPS chart (passed/blocked) in monitoring page of Sentinel Dashboard (fixes #22, @jasonjoo2010)
• Fix bug for wrong log file name checking and performance problem (fixes #181)
• Fix bug for body reading in HttpServerHandler of sentinel-transport-netty-http (fixes #184, @jasonjoo2010)
• Fix bug for ConcurrentModificationException when getting machine map in AppInfo of Sentinel Dashboard (fixes #201)

Thanks for the contributors: @jasonjoo2010, @shannon312, @waveng

v0.2.0

This is a milestone version providing new cool features like asynchronous invocation support and flow control by frequent (hot spot) parameters.

Note: this is the last milestone version that supports JDK 1.6. Since next milestone version, the minimum JDK version will be 1.7.

Features

• Add support for asynchronous invocation entry (#146)
• Flow control by frequent (hot spot) parameters (#156)
• Support extensible slot chain builder using SPI mechanism (#145)
• Add callback registry for statistic slot for extensions
• Add Redis data source extension (#102, @tigerMoon)
• Add MetricsRepository interface and reuse original in-memory implementation for Sentinel Dashboard (#126)
• Access control for white-list / black-list (AuthorityRule)
• Add RequestOriginParser for Sentinel Web Servlet Integration to support extracting request origin

Enhancements

• Refactor data source hierarchy: spilt into readable and writable data source (#124)
• Support JDK-based proxy in Sentinel annotation support (#111)
• Enhance exception tracing in Sentinel Dubbo Adapter
• Enhance FileRefreshableDataSource (check file modified) and support FileWritableDataSource (#125, @yfh0918)
• Refactor LeapArray to reuse code for current bucket
• Enhance log and null check for rule managers
• Add benchmark for Sentinel
• Extract MetricsReader from MetricSearcher (#103, @refactormachine)

Bug fixes

• Fix bugs for Sentinel internal error when context count exceeds MAX_CONTEXT_NAME_SIZE (#152)
• Fix bugs for degrade rule checking (fixes #109 and #128)
• Fix bug for error file separator regex in Windows environment (fixes #52)
• Fix bug for missing maxQueueingTimeMs in equals and hashCode method of FlowRule (fixes #99)
• Fix bug for system rule page in Sentinel Dashboard (fixes #51)
• Fix bug for automatic exit of default context when exiting the entry
• Fix bug for probability of metric lose when collecting metrics
• Fix bug for update logic of minRt in metric bucket

Thanks for the contributors: @kimmking, @refactormachine, @talshalti, @tigerMoon, @yfh0918

v0.1.1

Features

• Add Nacos data source extension (#8)
• Add ZooKeeper data source extension (#33, @guonanjun)
• Add Sentinel annotation and AspectJ support (#43)
• Add default fallback support for Dubbo adapter
• Add Apollo data source extension (#46, @nobodyiam)

Bug fixes

• Enhance error handling when parsing bad dashboard addresses (fixes #38)
• Fix bugs about runtime port and heartbeat sending logic (fixes #20)

Enhancements

• Optimize for statistic data structures (leap array)
• Use named thread factory for clear identification (#10)
• Refine degrade rule checking and default value of flow rule attributes

Thanks for the contributors: @guonanjun, @manzhizhen, @nobodyiam, @xg1907