frontendbackendservicecachedatabasequeuecdn

URL Shortener Service

Scalable URL shortening with analytics, custom aliases, and expiration.

7 components7 connections7 types

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Components

frontend

Web Interface

Short link creation form, analytics dashboard, custom alias management.

backend

API Server

REST API for create/read/delete short URLs. Handles redirect (301/302).

service

ID Generator

Base62-encoded unique IDs from Snowflake-style counter. Collision-free at scale.

cache

Redis Cache

Hot URL lookups cached for sub-ms redirects. LRU eviction for cold links.

database

URL Database

Mapping table: short_code → original_url, created_at, expires_at, user_id.

queue

Analytics Pipeline

Click tracking: geo, referrer, device, timestamp. Async via Kafka.

cdn

CDN / Edge

Edge-cached redirects for popular links. Reduces origin load by 90%+.

Data Flow

Web InterfaceAPI ServerHTTPSmedium

CDN / EdgeAPI ServerCache missmedium

API ServerID GeneratorGenerate IDmedium

API ServerRedis CacheLookup/storehigh

API ServerURL DatabasePersistmedium

API ServerAnalytics PipelineClick eventshigh

Redis CacheURL DatabaseCache misslow

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