Release Notes

0.6.0(Staging)

Features / Enhancements

• Make circuitbreaker.Rule a unified struct entity for all circuit breaking strategies (#205)
• Support customizing global logger and export logger functions as default delegate (#201)
• Add "warm-up" control behavior support (#190,#218)
• Add go-micro adapter support (#214, #219)
• Improve the rule entities and default JSON rule parsers in ext/datasource package (#198
• Upgrade nacos-sdk-go to v1.0.0 and polish Nacos data-source (#199)
• Make start time of buckets align with bucketLength in AtomicBucketWrapArray (#197 )
• Refine the semantics of onComplete: executed when a passed request finished (#215)
• Improve unit tests of circuit breaker module to avoid massive log (#216)

Bug fixes

• Fix the bug of circuit breaker half-open state transformation when request is blocked by upcoming rules (#202)
• Fix test failure in Windows environment (#195)

0.5.0

Features / Enhancements

• Support arbitrary parameter type in "hot-spot" param flow control (#185)
• Support initialization with Sentinel config entity directly (#162, #175)
• Add Consul data-source extension (#116)
• Add Nacos data-source extension (#184)
• Optimize performance when loading large amount of rules (#176)
• Improve rule checking slots with standard BlockError representation (#187)
• Carry correct invocation arguments in dubbo-go adapter (#186)

Bug fixes

• Fix index checking logic in AtomicBucketWrapArray.elementOffset(idx)

0.4.0

In this version, we've brought flow control capability for frequent ("hot spot") parameters, which enables detecting top-N visiting parameters and perform fine-grained rate limiting for every "hot" values (or for some specific values). Currently Sentinel Go supports basic numeric types (various int/uint/float types), bool type and string type.

Features / Enhancements

• Support flow control for frequent ("hot spot") parameters (#119)
• Improve pooling and time retrieval mechanism to optimize performance (#155)
• Polish data-source helper (canonical converter and updater) for rules (#157)
• Add fundamental benchmarks (#154)

0.3.0

In this version, we've brought circuit breaking feature to Sentinel Go, which is used to provide stability and prevent cascading failures in distributed systems. Currently Sentinel Go provides two kinds of strategies: RTT-based (slow request ratio) and error-based (error ratio/error count).

Features / Enhancements

• Add circuit breaking support (#18, #152)
• Refactor the mechanism of recording error in SentinelEntry/StatisticSlot and polish api.Tracer (#143, #153)
• Improve mechanism of reusing TokenResult to reduce memory footprint (#149, #142)
• Add etcd v3 data-source implementation (#115)
• Add adapter for echo Web framework (#95)
• Support carrying additional attachments with sentinel.Entry(options) (#124)
• Remove unnecessary division checking for interval of SlidingWindowMetric (#134)

0.2.0

Features / Enhancements

• Add basic abstraction for data-source extension (#73)
• Unify general configuration and logging configuration (#56)
• Add basic error Tracer API (#65, #96)
• Add integration module for Gin web framework (#82)
• Add integration module for gRPC-go (#81)
• Add dubbo-go adapter module (#60)
• Add refreshable file data-source implementation (#86)
• Add support for collecting CPU usage for SystemRule and add stat.system.collectIntervalMs config item

Bug fixes

• Fix bugs in reading logic of MetricLogSearcher