Short links,
measured in real time.
Paste a long URL, get a short link instantly, and watch every click flow through a Kafka-powered analytics pipeline. Free, no sign-up.
Built like production, not a toy
Every feature below is a real system-design pattern running live behind this page.
Instant redirects
Cache-aside lookups in Redis keep the hot redirect path under 50ms; Postgres is the fallback, never the bottleneck.
Real-time click analytics
Each visit fires a click event to Kafka; a consumer batch-aggregates counts back into Postgres. Stats stay fresh without slowing redirects.
Abuse protection
Token-bucket rate limiting (20 creations/minute per IP) and strict URL validation keep the service clean for everyone.
Custom aliases
Want snip/launch-day? Pick your own memorable code — validated and uniqueness-checked.
Developer API
A documented REST API with Swagger UI. Create, list, inspect and delete links programmatically.
Durable by design
PostgreSQL with Flyway migrations for the source of truth; Base62-encoded IDs give collision-free codes by construction.
How it works
Three steps for you. A lot more happening underneath.
Paste
Drop in any long URL above — optionally with a custom alias.
Share
Your short link redirects in milliseconds, anywhere you post it.
Measure
Every click is counted through the Kafka pipeline. Check stats anytime.
hot cache
source of truth
Use it from your own apps
One POST and you have a short link. Full interactive docs included.
curl -X POST https://url-shortener-fjdk.onrender.com/api/v1/urls \
-H 'Content-Type: application/json' \
-d '{"url": "https://example.com/very/long/page"}'
# → 201 Created
# {"code":"0003d7",
# "shortUrl":"https://url-shortener-fjdk.onrender.com/0003d7",
# "originalUrl":"https://example.com/very/long/page"}Explore every endpoint — create, list, stats, delete — in the interactive docs.
Open Swagger UI