Now，repl-backlog-size is still 1mb,For most scenarios, this value is too small.Network transmission and bandwidth performance have improved rapidly in more than ten years，Memory is getting cheaper and cheaper. Although the impact is noted in the documentation, most Redis users will directly use the default configuration.In many scenarios, the traffic per second of a single node exceeds 1mb.Especially for businesses facing individual users. I recommend at least updating the configuration to 10mb to improve the rationality of the current repl-backlog-size.
Comment From: enjoy-binbin
we do have plan to change it, we will revisit it future.