All they had were the compiled DLLs. Thirty-seven of them, baked in mystery.
Leo, a senior backend engineer at a midsized logistics firm, sighed. Three days. He’d been putting this off for weeks. His team maintained a monolithic Windows service that routed shipping data between a 2008-era SQL Server and a modern Azure Functions fleet. The original developer, a man named Gerald who had retired to a sailboat in the Bahamas, had left no documentation. And the source code repository? Corrupted during a botched migration to Git.
He spent the afternoon rewriting the decompiled logic into a new class, ModernRouteOptimizer , using actual road data from a REST API. Then he used (new in v11) to compare his version with Gerald’s original. The side-by-side view highlighted changes in green—refactored loops, removed hacks, added caching.
He smiled, took a sip of rum, and turned his sailboat toward the horizon. Some mysteries, he thought, are meant to be solved—just not by him.
