> ## Documentation Index
> Fetch the complete documentation index at: https://ihub.learnille.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Key Performance Indicators (KPIs) & Operational Metrics

> Migrated from the previous Learnille internal documentation hub

## Overview

This document outlines the core business, technical, and operational performance metrics used to measure platform health, user engagement, and service delivery on Learnille.

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## 📈 Product & Business Metrics

### 1. Platform Growth & Monetization

* **Gross Merchandise Value (GMV)**: Total monetary value of all course purchases, consultation bookings, and space tickets processed.
* **Net Revenue (ARR / MRR)**: Total platform commission collected after provider payouts and gateway fees.
* **Monthly Active Learners (MAL)**: Unique learners logging in and completing a learning action (video view, quiz submit, consultation attend) per month.
* **Active Provider Ratio**: Percentage of registered instructors/consultants with at least 1 active published course or available consultation slot.

### 2. Learner Engagement & Retention

* **Course Completion Rate**: Percentage of enrolled students who complete 100% of course sections. Target: **> 45%**.
* **Consultation Completion Rate**: Percentage of scheduled consultation sessions completed successfully without cancellation or dispute. Target: **> 95%**.
* **30-Day Learner Retention Rate**: Percentage of learners returning within 30 days of initial enrollment or booking.

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## ⏱ System Reliability & Performance SLAs

| Service Domain | SLA Target | Measurement Strategy |
| :- | :- | :- |
| **API Availability** | 99.9% Uptime | Sentry / Healthcheck Endpoints |
| **P95 API Latency** | \< 250ms | NestJS Middleware + Winston Logs |
| **Video Playback Startup Time** | \< 1.5 seconds | HLS Player Analytics |
| **Real-time Sync Latency (InstantDB)** | \< 100ms | Socket ping & InstantDB state propagation |
| **Payment Webhook Processing** | \< 5 seconds | BullMQ Outbox Worker Queue Latency |


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