Building a Production-Grade Customer Inquiry Auto-Responder with SQLite Logging

The Journey I set out to build an efficient automation backend utility designed to classify incoming customer inquiries and automatically suggest optimized replies. My goal for this challenge was to document the transition of a basic, fragile text-parsing utility into a highly resilient, enterprise-ready application script. Production Evolution The Before (Fragile Prototype Base): The initial design relied entirely on rigid, case-sensitive string matching. It contained no persistent database engine, meaning analytics data was lost instantly upon script termination, and it lacked structural exception guarding, making it highly susceptible to standard runtime crashes if empty or unexpected values were inputted. The After (Fault-Tolerant Enterprise Core): I fully refactored the utility's entire architectural layout. The system now initializes a local SQLite relational table structure ( analytics.db ), appends automated date/time timestamps for granular metrics tracking, leverages strict array-based substring evaluation, and traps fatal exceptions seamlessly via localized error handling catch loops. Public Code Repository The complete operational source code, database persistence schemas, and functional verification blocks can be inspected directly via my public repository: https://github.com/playsmai/biz-responder-automation-