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A safer Windows slowdown triage: 30 minutes before you reinstall

When a Windows machine becomes slow, reinstalling the operating system is often treated as the first move. It should usually be much later in the process. A reinstall changes many variables at once, creates avoidable recovery work, and can hide the real cause: a failing disk, too little free space, an aggressive startup application, an incomplete update, thermal throttling, or a workload that has…

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UUIDs explained — the uniqueness myth, the version you should be using, and the database mistake that slows everything down

You've generated thousands of UUIDs without thinking twice. id column, default value, done — a 36-character string that looks like f47ac10b-58cc-4372-a567-0e02b2c3d479 shows up, and you move on.

  • UUIDs are 128-bit numbers written as 32 hexadecimal digits with hyphens
  • Version 4 UUIDs are randomly generated with 122 bits of randomness
  • Using random UUIDs as primary keys causes database performance issues

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