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redisが使用しているメモリ容量の確認方法

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redisが使用しているメモリを確認したい時、redis-info cliのMemoryのそれぞれの項目の意味で説明をまとめる。

redis-cli info

Memory

used_memory:1004464
used_memory_human:980.92K
used_memory_rss:1765376
used_memory_peak:1004464
used_memory_peak_human:980.92K
used_memory_lua:35840
mem_fragmentation_ratio:1.76
mem_allocator:libc
  1. used_memory : redisによって割り当てられた総バイト数
  2. used_memory_human:単位表示(人間が読める型式の表現)
  3. used_memory_rss:OSから見たときのRedisによって割り当てられたバイト数
  4. used_memory_peak:Redisが消費する最大メモリ
  5. used_memory_peak_human:単位表示(人間が読める型式の表現)
  6. used_memory_lua:Luaのエンジンが使用するバイト数
  7. mem_fragmentation_ratio:used_memory_rssとused_memory間の比率
  8. mem_allocator:libc:メモリアロケータ
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