Overview

A simple URL Shortener service that shortens, stores, and resolves URLs. It uses base62 encoding with a random number to generate the short url. The random number is between 1-916132833 which guarantees a short url with max length of 5 characters (number of permutations with max 5 chars: 62⁵ = 916132832).

Prerequisites

• go 1.20 installed - https://go.dev/doc/install

Check go version:

go version

• mongodb-community@6.0 installed and running on the default port :27017 - https://www.mongodb.com/docs/manual/tutorial/install-mongodb-on-os-x/

Check that the service is running (for MacOS, using brew):

brew services list

Name              Status  
mongodb-community started

Run

Start the service with:

go run cmd/main.go

To run all tests use:

go test ./... -v

Usage

Get short url:

curl 'http://localhost:8090/' -H 'Content-Type: text/plain;charset=UTF-8' --data-raw 'https://someverylongdomainnamehere.com/some/very/very/long/path/here?foo=bar'

Example result:

P8gCt

Going to http://localhost:8090/{shortUrl} will result in a redirect to the original url.

Curl:

curl 'http://localhost:8090/P8gCt'

Example result:

<a href="https://someverylongdomainnamehere.com/some/very/very/long/path/here?foo=bar">Moved Permanently</a>.