Lightweight URL Shortener: Logic Patches & Caching Troubleshooting

A legacy Flask & Redis microservice refactored to demonstrate architectural defensive patching, inputs sanitation, and distributed cache infrastructure resilience.Solved Issues:Patched complex logical flaws causing infinite redirection loops on lookup routes.Resolved application thread crashes triggered by mixed, malformed JSON and form payloads.Hardened network failover mechanics to maintain runtime stability during Redis database latency.