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Navigating the Perils of Perl Mocking: A Debugging Journey
As a software engineer, I often find myself deep in the trenches of testing, ensuring the code I write is not just functional but also resilient. Recently, I embarked on a refactoring project that involved moving a script’s functionality into a new Perl module, App::Workflow::Controller. This module’s job was to orchestrate a few tasks: query…
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Browser Errors vs. Link Lights: Demystifying Network Connectivity with the OSI Model
Browser Errors vs. Link Lights: Demystifying Network Connectivity with the OSI Model We’ve all been there: you open your web browser, eager to surf the net, only to be greeted by the dreaded “There is no Internet connection” message. It’s frustrating, but understanding how your computer connects to the internet can turn that frustration into…
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Security concerns regarding OpenSSH mac sha1 in Debian
What is HMAC? HMAC stands for Hash-Based Message Authentication Code. It’s a specific way to use a cryptographic hash function (like SHA-1, SHA-256, etc.) along with a secret key to produce a unique “fingerprint” of some data. This fingerprint allows someone else with the same key to verify that the data hasn’t been tampered with.…