Eric Zhao c0c27c86b7 Refactor degrade hierarchy with new circuit breaker mechanism and improve strategy ... * Add `CircuitBreaker` abstraction (with half-open state) and add circuit breaker state change event observer support. * Improve circuit breaking strategy (avg RT → slow request ratio) and make statistics of each rule dependent (to support arbitrary statistic interval). * Add simple "trial" mechanism (aka. half-open). * Refactor mechanism of metric recording and state change handling for circuit breakers: record RT and error when requests have completed (i.e. `onExit`, based on #1420). Signed-off-by: Eric Zhao <sczyh16@gmail.com>		2020-07-30 19:00:13 +08:00
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src	Refactor degrade hierarchy with new circuit breaker mechanism and improve strategy	2020-07-30 19:00:13 +08:00
pom.xml	Bump version to 1.8.0-SNAPSHOT	2020-04-13 20:19:22 +08:00