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Write-through Cache

A cache writing strategy where data is written to both the cache and the main memory simultaneously.

Categoryhardware

Overview

In a write-through policy, every time the CPU modifies a piece of data in the cache, the update is immediately sent to the main memory as well.

Advantages

  • Simplicity: Main memory always has the most up-to-date data.
  • Reliability: Less risk of data loss if the cache is corrupted.

Disadvantages

  • Performance: Every write operation is limited by the speed of the main memory, which is much slower than the cache.

Related Terms

Write-back Cache