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Modification of configs in runtime
In order to modify a configuration, we have to rolling-update all the servers to load the new config file. This is particularly cumbersome for us to operate the service.
Now, this feature allows us to update a config item using HTTP API. Please check XiaoMi/rdsn#719, XiaoMi/rdsn#704, XiaoMi/rdsn#682 for more details.
Hot-key detection
Rate-limiting of reads
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