Grokking System Design Fundamentals
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Uses of Checksum

Here are the top uses of checksum:

  1. Data Integrity Checks: Imagine sending a super-secret spy message - you wanna make sure it doesn’t get altered during transmission, right? Checksums ensure data hasn’t been tampered with during transmission by checking - you guessed it - the Checksum! If it doesn’t match, something’s fishy.

  2. Error Detection: Ever download a file and it just won’t open? Checksums can help detect if a bit of data got scrambled during a download, helping systems know when they need to try downloading it again.





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