PERSONAL PROFESSIONAL
PROFESSIONAL

When Backward Compatibility Can Rescue a Leaky Abstraction
I thought I was making a simple change; changed a function signature that was only ever called in the same module. I thought it was safe, until my pipeline crashed days later because old tasks serialized with the previous signature tried calling the new code. This is a story about how I wrangled backward compatibility, tamed a leaky abstraction, and kept my data flowing.
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