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anupam9919/README.md

Anupam Singh

Backend Engineer — Node.js · TypeScript · Redis

I build backend systems that stay correct under load —
networked services, distributed state, and infrastructure other engineers build on.

   

What I Build

  • Backend services designed for concurrency correctness — shared state that holds under simultaneous load
  • Distributed systems patterns: rate limiting, caching strategies, API contracts, event-driven queues
  • Infrastructure that runs independently and lets other services call into it — not an importable library
  • AI-native development workflow with GitHub Copilot and Claude for architecture decisions and faster delivery

Featured Project

Tollgate — Networked Rate Limiting Service

TypeScript  Node.js  Express  Redis  Lua  k6

A standalone rate limiter other services call into over the network — not a library. Built for shared state, atomic correctness, and zero-restart config changes.
Throughput 500+ req/s sustained under k6 load — correctness gate exits non-zero if allow-count exceeds configured limit
Concurrency Atomic Lua/EVALSHA scripts inside Redis — eliminates race conditions that application-level locking cannot prevent
Architecture Dual-plane design: data plane (/check) and control plane (/admin) communicate only through Redis — zero router coupling
Config Per-client algorithm (token bucket / sliding window), burst size, and window size hot-swappable at runtime via PUT /admin/clients/:clientId

Stack

Languages & Runtime

TypeScript JavaScript Node.js Python

Backend & Infrastructure

Express Redis PostgreSQL Docker GitHub Actions Jenkins

Expanding

MongoDB AWS

Stats

Currently: Tollgate Phase 4 — distributed mode across multiple Redis nodes

Pinned Loading

  1. Think-Page Think-Page Public

    The project of our group is a Note taking website with authentication which goes by the name of “Think Page”.

    CSS 1

  2. Glass-Forms Glass-Forms Public

    HTML

  3. Machine-Learning-Data-Science-Portfolio Machine-Learning-Data-Science-Portfolio Public

    Internship tasks at Oasis Infobyte

    Jupyter Notebook

  4. Rock-Paper-Scissor Rock-Paper-Scissor Public

    C

  5. Word-Cloud-Generator Word-Cloud-Generator Public

    Uncover trends and patterns to gain insights from text data

    Python

  6. Real-Time-Vehicle-Tracking-System Real-Time-Vehicle-Tracking-System Public

    🚍 Real-time vehicle tracking system built with Flutter & Firebase RTDB. Features live GPS tracking, ETA estimation, driver dashboard, admin panel, and student-facing bus stop finder with a premium …

    Dart