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2019-01-18T18:53:10.3235379Z - github / Hacker News
frenoCooperative, highly available throttler service: clients use freno to throttle writes to a resource. freno will throttle cooperative clients when replication lag exceeds a pre-defined threshold. freno is highly available and uses raft consensus protocol to decide leadership and to pass user events between member nodes. Stores and appsfreno collects data per data store. Such operations typically walk through thousands to millions of rows and may cause undesired effects such as MySQL replication lags.

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