A rejected request answered 200 with the failure only in the body, so every
layer that reads the status line counted it as served: load balancers, metrics,
client-side retry. A load test against this reported the limiter's own
rejections as successful traffic and overstated throughput more than tenfold.
The threshold was a constant in the middleware, which made 200 QPS the ceiling
of every deployment with nothing in the configuration to reveal it. It now
reads extend.rateLimit.inboundQPS; an absent value keeps 200, so an upgrade
changes nothing, and zero disables the limiter for a deployment behind its own
gateway.
Also drops Strategy: system.BBR. Reading sentinel's source, the adaptive
strategy is consulted only for Load and CpuUsage - for InboundQPS the trigger
count is compared directly - so it read as if the limit adapted to the machine
when it never did.
thirdUpload dispatched on the source parameter and then built the same
zero-value ALiYunOSS in both branches, so source=3 could not have
reached qiniu even with credentials.
Neither branch had credentials to use. OXS.Setup is the initialisation
path and nothing in the repository called it, and no configuration field
existed to fill. The store is now taken from extend.fileStore, and a
provider that was not configured says so rather than producing the
provider's own complaint about an empty bucket name.
The two handlers passed errors.New("") to e.Error, discarding what
actually went wrong; they now pass the error.
zhangwenjian