Address Lookup

A high-speed US address verification API built for any form flow, from checkout and onboarding to KYC and service requests

Address Lookup API combines Spring Boot and Elasticsearch to return sub-millisecond suggestions across 155M+ US addresses. It includes intelligent unit grouping, session-aware billing, secure API key controls, and real-time analytics through an admin dashboard.

ReactSpringbootTailwindElasticSearch
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155M+

US Addresses Indexed

<1ms

Response Time

99.9%

API Uptime

100%

Data Accuracy

Project Overview

Understanding the context and objectives

Client Background

Product teams across ecommerce, fintech, insurance, and logistics needed a reliable address validation layer for customer-facing forms.

Business Context

Manual entry errors, cluttered multi-unit results, and rising third-party API costs were reducing form quality and slowing downstream operations.

Project Goals

Build a self-hosted address intelligence service that is fast, secure, and easy to operate at scale.

  • -Deliver sub-millisecond address suggestions
  • -Keep search results clean with unit grouping logic
  • -Support checkout, account creation, KYC, and internal ops forms
  • -Expose analytics and usage controls for platform teams

Understanding the Problem

Technical and operational barriers that needed resolution

Key Pain Points

  • Frequent address formatting errors across digital forms
  • Overloaded autocomplete results for apartment and office buildings
  • Limited visibility into lookup traffic and usage quality
  • Escalating third-party API charges at higher query volume
  • Need for self-hosted deployment and stronger key governance

Critical Issues

Address quality, API abuse prevention, and real-time visibility were the core blockers.

How We Solved It

A comprehensive solution combining technology and innovation

Our Approach

We built a dedicated address microservice with Spring Boot, Elasticsearch, and async analytics logging so performance and insight collection stay decoupled.

Architecture

Public API and admin services run with Redis-backed rate limiting, secure key validation, and role-based operational controls.

Key Features Implemented

Sub-millisecond autocomplete on a 155M+ US address dataset
Smart unit grouping to reduce noisy building-level matches
Admin portal for organization setup and API key lifecycle management
Dual-layer throttling by IP and organization in Redis
Session-based counting model for fair and accurate usage tracking
Asynchronous analytics capture with no added lookup latency
JWT-protected admin access and hashed API key storage
Health check and deployment controls for production environments
Address Lookup screenshot

Tools & Technologies

Technology stack and coding languages behind robust solutions

Frontend

React 18TypeScriptViteTailwind CSSPrimeReact

Backend

Java 17Spring Boot 3.2Spring Security

Search & Data

Elasticsearch 8.xSQL ServerRedis

Infrastructure

DockerAzure VMJWT Auth

Process & Execution

A structured approach to transform and deliver

Discovery & Planning

1

Analyzed address validation requirements across e-commerce, logistics, and fintech use cases.

Architecture & Design

2

Designed microservices architecture with Elasticsearch indexing and async analytics pipeline.

Agile Development

3

Built core API, unit grouping logic, and admin dashboard in iterative sprints with performance benchmarking.

Quality Assurance

4

Validated search accuracy, rate limiting, security controls, and sub-millisecond response times.

Deployment & Launch

5

Dockerized deployment to Azure VM with health monitoring and load balancer integration.

Support & Evolution

6

Ongoing enhancements for analytics visualization, API features, and performance optimization.

Measurable Outcomes

Tangible results achieved through our collaboration

72%

Fewer Invalid Form Submissions

99.9%

API Uptime

<1ms

Average Suggestion Time

58%

Lower Lookup Cost

“Address quality improved immediately across onboarding and checkout. The unit grouping and analytics controls gave us clarity we never had with external APIs.”

Priya Nandan

Director of Platform Engineering, NorthBridge Digital

Need a Production-Grade Address Lookup API?

We can design a secure, low-latency address intelligence service tailored to your workflows, compliance needs, and scale targets.

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