# Google SRE 分享:17LIVE 的 SRE 太極拳 - 何宗憲 (Shawn Ho), 林毅民 (Sammy Lin) ###### tags: `2022` {%hackmd @sre-conf/rJQjv2krq %} 沒人寫QQ "outage" is when system unusable outage timelines : TTD, TTM, TBF  ## 面對Google SRE 服務設計 * 設計 Reduandancy 避免 single point of failure ,自動 failover * 設計要可以橫向擴展 micorservices * Tolerate overload ex: 嘟嘟車的例子 程式可以因為loading 變慢但是不能crash AP 要能夠"降載服務" * Rapid Rollback * 避免 traffic spike 不怕不爆衝或 DDoS
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