LIVE PWA + APK
WEBRTC JAM
★ Flagship Production Media System
2024 — 2026 · Active Global Deployment
An edge-native, high-fidelity music streaming ecosystem engineered from first principles to conquer mobile audio latency, cross-device clock drift, and complex media stream extraction. Playify delivers instantaneous 320kbps audio playback, an ultra-fast collaborative Spotify Jam engine (<10ms clock phase-lock), client & Cloudflare Edge pure DES cryptographic decryption, robust offline caching via Service Workers, and a hardware-accelerated standalone Android APK with lock-screen media controls.
< 10 ms
Jam Clock Drift
WebRTC PeerJS & MQTT mesh
320 kbps
Studio Master AAC
Pure DES deciphered bitstream
0 ms
Edge Cold Starts
Cloudflare V8 isolate runtime
100%
Offline PWA Cache
Service Worker & CacheStorage
16.8 MB
Lean Android APK
Hardware-accelerated engine
Pillar 01
📡 Real-Time Spotify Jam Engine (<10ms Sync)
Architected a distributed multi-device synchronized audio engine allowing phones, tablets, and laptops to playback the identical audio frame in lockstep.
- Dual Transport: Direct WebRTC DataChannels (PeerJS mesh) with seamless automatic failover to MQTT publish/subscribe brokers.
- Clock Drift Calibration: Computes dynamic round-trip ping time (
RTT / 2) with micro-rate playback adjustments (1.03x / 0.97x) to eliminate audible drift without jarring audio pauses.
- Zero-Friction Pairing: 4-digit PIN room generation and real-time camera QR scanning with
html5-qrcode.
Pillar 02
🔐 Pure DES Cryptographic Decryption
Developed a zero-dependency client & edge serverless decryption pipeline in pure ES6+ JavaScript to decrypt protected media streams on-the-fly.
- Zero Heavy Dependencies: Eliminated bulky WebAssembly runtimes by implementing pure DES permutation matrices and S-box cryptographic routines natively.
- Cloudflare Edge Workers: Deployed distributed V8 edge workers (
_worker.js) serving media metadata with 0ms cold starts and global CDN caching.
- Memory-Safe Streaming: Optimized Uint8Array buffer piping ensuring steady heap allocations (
< 35MB RAM) across extended playback sessions.
Pillar 03
⚡ Offline-First PWA & Cache Pipeline
Engineered a resilient Progressive Web App adhering to modern W3C service worker and storage standards for uninterrupted listening anywhere.
- Multi-Tier Caching: Service Worker (
sw.js) implements Cache-First strategies for application shell & icons, and Stale-While-Revalidate for APIs.
- Progressive Audio Chunks: Audio chunks are cached into browser CacheStorage, allowing full playback of cached tracks even in airplane mode.
- IndexedDB Persistence: User libraries, recent searches, and custom playlists remain instantaneous with zero server round-trips.
Pillar 04
📱 Hardware-Accelerated Standalone APK
Packaged and optimized a standalone native Android application with system-level media integration and foreground background playback.
- Android MediaSession Integration: Native lock-screen artwork, Bluetooth car stereo metadata streaming, notification shade controls, and hardware volume key listeners.
- Foreground Service Audio: Guaranteed continuous audio playback when the phone screen is off without system task-killer termination.
- Fluid 60fps Experience: Hardware-accelerated CSS GPU rasterization ensuring silky smooth scrolling across 1,000+ song playlists.
System Dataflow & Real-Time Clock Sync Topology
┌─────────────────────────┐ WebRTC PeerJS Direct Mesh (<10ms) ┌─────────────────────────┐
│ Host Device (Controller)│ ◄────────────────────────────────────────────────► │ Guest Listeners (Phones)│
└────────────┬────────────┘ (Fallback: MQTT Global WebSocket Broker) └────────────┬────────────┘
│ │
│ Phase-Lock Drift Compensation: audio.playbackRate = 1.03x / 0.97x │
▼ ▼
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Cloudflare Edge API Worker (_worker.js) ──► Pure DES Decryption ──► Decrypted 320kbps AAC Bitstream │
└────────────────────────────────────────────────┬───────────────────────────────────────────────────────┘
│
▼
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ W3C Service Worker (sw.js) ──► CacheStorage / IndexedDB ──► Web Audio API & Android MediaSession Service│
└────────────────────────────────────────────────────────────────────────────────────────────────────────┘
Spotify Jam (<10ms)
WebRTC / PeerJS
MQTT Protocol
Pure DES Crypto
PWA & Service Worker
Standalone Android APK
Cloudflare Workers Edge
HTML5 Web Audio API
Android MediaSession
IndexedDB Storage
LIVE HOSPITALITY OS
WEB AUDIO BELL
★ Flagship Hospitality OS · Real-Time Table & KDS Network
2025 — 2026 · Active Global Deployment
An enterprise hospitality operating system engineered from first principles to conquer restaurant table bottlenecks, eliminate expensive proprietary POS hardware, and provide seamless real-time coordination between dining guests, line chefs, and floor managers. Built with dedicated full-viewport workspaces (modeled after Toast POS and Sunday App), instantaneous cross-window synchronization via W3C BroadcastChannel, synthesized multi-harmonic hardware counter bell audio (1.8kHz brass ping), live second-by-second SLA ticket timers, and authentic 80mm dot-matrix thermal tax receipt generation.
< 5 ms
Cross-Screen Sync
W3C BroadcastChannel bus
0 ms
Audio Playback Lag
Web Audio API oscillators
3 Views
Dedicated Workspaces
Guest Menu • KDS • Floor POS
80 mm
Thermal Invoicing
Itemized GST & FSSAI receipts
4-Stage
Kitchen Kanban
Incoming ➔ Cook ➔ Pass ➔ Settle
Pillar 01
🍽️ Guest Digital Dining & Item Modifiers
Full-width luxury bistro menu with real culinary photography, dietary filters, interactive modifier modal, and a slide-out order tray drawer.
- Allergen & Dietary Filtering: Instant client-side filtering across Vegetarian, Vegan, Gluten-Free, and Spicy options.
- Interactive Dish Customizer: Sourdough choice, doneness temperature, add-on finishes (truffles, burrata), and custom chef instructions with live price recalculations.
- Table Waiter Calling: One-tap service bell dispatcher broadcasting instant assistance alerts to kitchen and floor managers.
Pillar 02
👨🍳 Commercial Kitchen Display System (KDS)
Industrial expediting terminal with multi-station routing (Grill & Sauté, Woodfire, Larder, Bar) and active SLA elapsed timers.
- Station Routing & Filtering: Independent line filtering across stations with live ticket counters.
- SLA Urgency Tickers: Second-by-second countdown with visual warnings (
<6m Normal, 6-12m Warning, >12m Urgent Pulse).
- Chef's 86'd Out-of-Stock Board: Instant cross-window ingredient disabling preventing guest ordering in real time.
Pillar 03
🔔 Web Audio Hardware POS Sound Engine
Physical acoustic sound synthesis directly via browser oscillators without bulky MP3 assets or network lag.
- Multi-Harmonic Brass Counter Bell: Synthesizes 1760Hz, 3520Hz, and 5280Hz frequencies with natural copper decay when orders arrive.
- Tactile Chef Bump Feedback: Low-frequency triangle wave thud (
140Hz – 45Hz) confirming station handoffs.
- Zero Latency: Sub-millisecond audio response across all desktop and mobile browsers.
Pillar 04
🖨️ Floorplan & 80mm Thermal POS Invoicing
Interactive floorplan table manager and authentic dot-matrix restaurant tax invoice generation formatted for physical roll printers.
- 10-Table Floor Occupancy Grid: Real-time table states (Vacant, Active Dining, Billed) with aggregated orders and totals.
- 80mm Thermal Invoicing: Itemized modifier breakdowns, split 2.5% CGST/SGST, 5% service charge, and simulated barcodes via
@media print.
- Zero Dependency Architecture: 100% pure vanilla JavaScript without heavy third-party framework overhead.
DineFlow 2.0 Real-Time Broadcast & Audio Topology
┌───────────────────────────────────────┐ ┌───────────────────────────────────────┐
│ Guest Mobile Table Order │ │ Kitchen Display System (KDS) │
│ (Customizer Modifiers, Tray Drawer) │ │ (Kanban Routing, Chef Bump Actions) │
└──────────────────┬────────────────────┘ └───────────────────▲───────────────────┘
│ │
│ BroadcastChannel ('dineflow_v2_bus') / LocalStorage Sync │
└───────────────────────────────────────────────────────────┘
│
▼
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Web Audio Hardware POS Synthesizer (Zero Audio Latency) │
│ 1760Hz / 3520Hz Multi-Harmonic Brass Counter Bell ('Ding Ding!') + Tactile Chef Bump Oscillators │
└──────────────────────────────────────────────────┬─────────────────────────────────────────────────────┘
│
▼
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ 80mm Thermal Receipt Generator & Real-Time POS Sales Analytics Engine │
│ Itemized Modifiers, 5% CGST/SGST, Service Charge, Monospace Dot-Matrix Formatting, Barcodes │
└────────────────────────────────────────────────────────────────────────────────────────────────────────┘
Hospitality OS
Kitchen KDS
QR Table Dining
Web Audio API
W3C BroadcastChannel
Real-Time Sync
80mm Thermal Receipt
JavaScript (ES6+)