RDB versus AOF for Low‑Latency Writes in Redis: Choosing the Right Persistence Mode
Goal: achieve the lowest possible write latency in Redis while maintaining a durability level that tolerates at most a few seconds of data loss. Understanding the trade‑off is complicated because the latency impact of RDB, AOF, and the hybrid mode varies with the fsync policy (always, everysec, no) and with how often background rewrites are triggered. Which
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