redis持久化模式

  • RDB（快照模式）
    • 优点：全量数据快照，文件小，恢复快
    • 缺点：无法保存最近一次快照之后的数据
  • AOF（Append-Only-File）追加模式
    • 优点：可读性高，适合保存增量数据，数据不易丢失
    • 缺点：文件体积大，恢复时间长
  • RDB-AOF混合模式
    • 先使用RDB保存全量数据，再使用AOP写入增量数据，保证了数据恢复快，文件小
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