Ahmed Waregh
Back to work

Config Service

Centralized configuration service used across internal systems for managing application settings and feature flags.

configuration managementinternal tooling
TypeScriptNode.js

Problem

As the number of internal services grows, managing configuration across environments becomes increasingly complex. Hardcoded values, scattered environment variables, and inconsistent configuration formats lead to deployment errors and operational overhead. A centralized configuration service provides a single source of truth for application settings.

Architecture Overview

The config service provides a unified API for storing and retrieving configuration values across all internal services. It supports environment-specific overrides, ensuring that development, staging, and production environments can share base configurations while maintaining environment-specific customizations.

Technical Decisions

  • TypeScript — type safety for configuration schemas prevents misconfiguration errors at compile time
  • Centralized management — single service owns all configuration, eliminating scattered environment variables and config files across services

Tech Stack

  • Backend: TypeScript, Node.js
Interactive Demo

Edit feature flags and config values, publish to all environments, and inspect the audit trail.

Open full screen
Active Keys
6
Feature Flags On
1
Overrides
0
Last Published

Config Keys

feature.new_checkoutboolean
Enable redesigned checkout flow
feature.ai_suggestionsboolean
AI-powered search suggestions
api.rate_limitnumber
Requests per minute per tenant
api.timeout_msnumber
Upstream request timeout
app.maintenance_modeboolean
Take app offline for maintenance
app.max_file_size_mbnumber
Max upload size in megabytes
Audit Log
Edit a config key to see audit entries