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EdTech & E-LearningGLOBAL EDTECH PLATFORM🟢 Production Deployed & Verified🛡️ GDPR & FERPA Compliant
EduLearn Video Learning Platform
Global EdTech learning platform delivering adaptive HLS video streaming, real-time quizzes, and progress analytics to 150,000+ students.
Delivery Speed⏱️ 8 Weeks Delivery
Engineering Team👥 6 Dedicated Engineers
Compliance Standard🔒 GDPR & FERPA Compliant
Client Organization🏢 EduLearn Platform
150k+
Enrolled Students
Across 40 countries
99.99%
AWS CDN Uptime
Multi-region streaming
< 0.2s
Video Buffer Latency
Adaptive bitrate HLS
4.8★
Student Rating
From 12,000+ course reviews
99.99% SLA Uptime
Target Arch: Microservices / Serverless Edge SSR
Core Stack: Next.js 16 • PostgreSQL • AWS CloudFront • AWS Lambda
✓ 0 Sec Vulnerabilities
📌
Executive Project Context & Strategic Scope
EduLearn required a high-scale video learning infrastructure capable of streaming HD video lectures to over 150,000 students worldwide across varying mobile connection speeds.
⚠️ Core Engineering & Operational Bottlenecks
1. Video Buffering on Low Bandwidth
Standard MP4 video downloads caused buffering on 3G networks, leading to high course abandonment.
2. Database Lockups During Live Exams
Simultaneous quiz submissions by 5,000+ students during scheduled exams crashed legacy SQL servers.
3. Progress Sync Data Loss
Unreliable client state syncing resulted in lost certificate progress records.
💡 Architectural Solutions Engineered by codeYB
✓ AWS CloudFront HLS Adaptive Streaming
Transcoded video assets into multi-bitrate HTTP Live Streaming (HLS) feeds for smooth 1080p to 360p playback.
✓ PostgreSQL Read-Replicas & Redis Caching
Engineered decoupled read-replica clusters handling 20,000 quiz submissions per second.
✓ Event-Driven Progress Sync Engine
Built an offline-resilient sync queue saving student timestamp progress every 5 seconds.
EMPIRICAL PRODUCTION METRICS
Quantifiable Business Impact (Before vs After)
Video Start Buffer Delay
Legacy Baseline4.5 Seconds Buffer
codeYB Production0.18 Seconds Buffer
96% Latency Reduction
Concurrent Exam Capacity
Legacy Baseline500 Students (Crashed)
codeYB Production25,000 Concurrent
50x Capacity Scale
Active Student Retention
Legacy Baseline34% Completion
codeYB Production88% Completion
2.5x Higher Retention
🏗️
EdTech Video Streaming Architecture
EduLearn utilizes AWS Elemental MediaConvert with global CloudFront edge distribution, enabling zero-buffering video playback while maintaining strict Digital Rights Management (DRM).
End-to-End Enterprise Data Flow & Pipeline
Client Edge Requests→Cloudflare WAF / SSL→Next.js Edge Cluster→Encrypted Storage / DB→Telemetry & Real-Time Sync
⚡HLS adaptive video transcoding (1080p 60fps to 360p mobile)
⚡PostgreSQL multi-region read-replicas for exam scaling
⚡Automated PDF certificate generation pipeline on AWS Lambda
⚡Real-time student leaderboard & discussion forum WebSockets
ENTERPRISE DELIVERABLES
Key Engineering & Architectural Features
🎥
Adaptive HD Video Player
Custom player supporting variable speed, subtitles, and offline video downloads.
📝
Automated Interactive Quizzes
Timed multiple-choice & code evaluation quizzes with instant score reports.
📜
Verified Digital Certificates
Cryptographically signed certificates generated upon 100% course completion.
📈
Instructor Analytics Portal
Engagement graphs highlighting exact student drop-off timestamps per lecture.
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"The custom HLS video streaming solution engineered by codeYB allowed us to deliver zero-buffering courses to 150,000+ students simultaneously across 40 countries."
DV
David Vance✓ Verified Client
VP of Digital Learning, EduLearn
EduLearn Platform
Full-Stack Technical Infrastructure
Technologies & Frameworks Deployed by codeYB
Next.js 16PostgreSQLAWS CloudFrontAWS LambdaHLS Video EngineTailwind CSS
TECHNICAL DEEP DIVE
Architectural & Implementation FAQs
SCHEDULE SYSTEM ARCHITECTURE REVIEW
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