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Cloud & DevOps · Major Project
Build a Load Balancer from Scratch
A working reverse proxy with balancing algorithms and health checks
3-4 weeks build
Overview
Learn what Nginx and cloud load balancers do by writing one. The proxy is written in Go, with a Python asyncio version for students who prefer it, and spreads requests over backend containers using round-robin, weighted and least-connections strategies. Active health checks and passive failure counting pull bad backends out of rotation and bring them back when they recover. Everything runs locally in Docker.
What makes it stand up
- 01Round-robin, weighted and least-connections algorithms
- 02Active health checks plus passive ejection on repeated failures
- 03Graceful handling of a backend dying mid-request
- 04Prometheus metrics for requests, errors and latency per backend
- 05Benchmarks against Nginx on the same setup, measured in the report
Module breakdown
- 01
Proxy core
Accepts connections and forwards HTTP requests to a chosen backend.
- 02
Algorithms
Pluggable strategies behind one selection interface.
- 03
Health checks
Periodic probes, failure counters and recovery rules.
- 04
Configuration
YAML backends and strategy reloaded without a restart.
- 05
Benchmarking
Load tests comparing strategies and Nginx side by side.
After this, you will be able to
- Explain when least-connections beats round-robin
- Defend your health-check intervals and ejection thresholds
- Demo a backend being killed and traffic rerouting live
Technology stack
- Go
- Python
- Docker
- Prometheus
- Level
- Major Project
- Domain
- Cloud & DevOps
- Build time
- 3-4 weeks
- Difficulty
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support