Cache寫機制：Write-through與Write-back

無論是Write-through還是Write-back都可以使用寫缺失的兩種方式之一。只是通常Write-back採用Write allocate方式，而Write-through採用No-write allocate方式；因爲多次寫入同一緩存時，Write allocate配合Write-back可以提升性能 1.CPU讀Cache時： ●若hit，則CPU直接從Cache中讀取數據即可。 ●

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