# Metrics
+ Read amplification is the number of `I/O` which is required to satisfy a particular query
+ Write amplification is the amortized `I/O` cost of inserting an entry into an `LSM-tree`
  + It should be noted that this cost measures the overall `I/O` cost for this entry to be merged into the largest level
+ Space amplification is the overall number of entries divided by the number of unique entries
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