Tag: system design
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Spring Boot Multi-Tenant Architecture (LMS Admin Console, Part 14)
A practical look at Spring Boot multi-tenant architecture through an LMS admin console: tenant-scoped data isolation, organisation reports computed as live folds…
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The Student Learning Flow in an LMS: Catalog, Enrollment, Course Player & Auto-Graded Assessments (Part 13)
Build an LMS student learning flow: a published-course catalog, idempotent enrolment, a lesson player with progress tracking, auto-graded quizzes and certificates.
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Instructor Course Authoring in an LMS: Lessons, Publishing & Cohort Rosters (Part 12)
Build an LMS instructor workspace: course and lesson authoring, a guarded draft-to-publish lifecycle, and tenant-scoped cohort rosters, server-rendered with Spring Boot and…
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Productionizing the LMS: Security, Testing, CI/CD, Scaling, SRE & Cost (Part 10, Capstone)
The capstone that earns the word production: securing, testing, shipping, scaling, and operating the LMS — resilience against cascading failure, observability and…
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LMS Interoperability: LTI 1.3, SCORM & xAPI Integration Done Right (Part 8)
Make an LMS sellable to institutions: LTI 1.3 launch and grade passback, safe SCORM import and reliable completion capture, and xAPI to…
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Spring Boot Stripe Webhook Idempotency (LMS Payments & Billing, Part 7)
How to make a Spring Boot Stripe webhook idempotent so payments apply exactly once: a billing data model, subscription state machine, idempotent…
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Search, Recommendations & AI Tutoring in an LMS: Hybrid Search, Cold-Start & RAG (Part 6)
Discovery makes or breaks an LMS: build first-class catalog search (keyword + semantic + hybrid), recommendations that survive the cold-start problem, zero-downtime…
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Learning Analytics at Scale: Events, Streaming & the Transactional Outbox (Part 5)
Build a reliable LMS event backbone: the transactional outbox that ends dual-write data loss, at-least-once delivery with idempotent consumers, partitioned ordering, and…
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Assessments & Real-Time at Scale: Auto-Grading, Live Classes & WebSockets (Part 4)
Build an LMS assessment + real-time tier: a deterministic auto-grading engine, exactly-once submission, and WebSocket fan-out that survives a 50,000-person live class.
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Serving Course Video at Scale: Storage, Transcoding & CDN
A production video streaming architecture for an LMS: resumable direct-to-storage uploads, an idempotent transcoding pipeline, an HLS adaptive-bitrate ladder, a CDN with…