A global cache manager supporting multiple eviction strategies (LRU, TTL, fixed-size) with typed caches and thread-safe access. Self-contained and config-driven; can be lifted into any Python service needing structured multi-tenant caching without modification.

Streaming PCM-to-Opus encode/decode utility with frame alignment and last-frame padding. Demonstrates non-obvious audio-engineering knowledge (frame boundaries, Opus packet semantics) and is a clean, isolated module reusable in any real-time audio project.

Timestamp-based audio frame pacing controller that schedules send operations for smooth playback, including pause/resume and pre-buffering. Implements a subtle real-time pacing problem without dragging in the rest of the server; extractable as a standalone rate limiter for streaming media.

Daily-rotating SHA-256 token authentication for MQTT gateway connections, with a ±1-day acceptance window and 401 retry handling. A small, well-contained security component that solves clock-skew-tolerant credential rotation — directly reusable in any gateway auth design.

A script that enforces locale-key parity across six translation files, failing CI when keys drift between languages. Solves the recurring i18n drift problem in a generic way; adaptable to any frontend with keyed translation dictionaries.

Abstract streaming TTS pipeline with text segmentation, slide-window word correction, and multi-format audio conversion (PCM/Opus). Demonstrates a clean base-class contract that dozens of TTS providers plug into via a config-driven factory; the segmentation/correction logic is reusable independently of any TTS vendor.