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Mengenal Shorting URL


URL shortening is a technique on the World Wide Web in which a Uniform Resource Locator (URL) may be made substantially shorter in length. This involves using an HTTP Redirect on a domain name that is short to link to a web page which has a long URL. For example, the URL http://en.wikipedia.org/wiki/URL_shortening can be shortened to http://goo.gl/Hsxsn and http://goo.gl/m0GwG


History

The idea of URL shortening dates to at least 2001.The first notable URL-shortening service, TinyURL, was launched in 2002. Its popularity influenced the creation of at least 100 similar websites Most are simply domain alternatives. Initially Twitter automatically translated long URLs using TinyURL. As of 2009, it began using bit.ly. In May 2009 .tk, which previously was used to generate memorable domains via URL redirection, launched tweak.tk,[5] which generates very short URLs such as http://mxtux.tk/. On 10 August 2009, tr.im, a notice shortening service announced that "[s]tatistics can no longer be considered reliable, or reliably available going forward" and that it was shuttering the generation of new shortened URLs, but assured that existing tr.im short URLs would "continue to redirect, and will do so until at least December 31, 2009". A blog post on the site attributed this move to several factors, including the lack of suitable revenue generation mechanisms to cover ongoing hosting and maintenance costs, lack of interest among possible purchasers of the service, and Twitter's default use of the bit.ly shortener. This blog post also questioned whether other shortening services can successfully monetize URL shortening in the longer term. A few days later, tr.im reversed itself on this move, announcing it would resume all operations "going forward, indefinitely, while we continue to consider our options in regards to tr.im's future" On 14 August 2009, WordPress announced the wp.me URL shortener for use when referring to any WordPress.com blog post. In November 2009, shortened links on bit.ly were accessed 2.1 billion times. Around that time, bit.ly and TinyURL were the most widely used URL-shortening services. In December 2009, the URL shortener TO./ NanoURL was launched by .TO. The service creates a URL address which looks like http://to./xxxx, where xxxx represents a combination of random numbers and letters. NanoURL currently generates the shortest URLs of all URL-shortening services, because it is hosted on a top-level domain (the one of Tonga). This rare form of URL may cause problems with some browsers, which interpret this as a search term and look it up on a search engine, instead of opening it. On 14 December 2009, Google announced a service called Google URL Shortener at goo.gl, which originally was only available for use through Google products (such as Google Toolbar and FeedBurner.)[11] It does, however, have two extensions (standard and lite versions) for Google Chrome.[12] Since September 2010 it has become available via a direct interface. On 21 December 2009, Google also announced a service called YouTube URL Shortener, youtu.be

Pernah melihat situs web seperti ini:

  • http://qurl.net/
  • http://bit.ly/
  • http://jtty.com/
  • http://elfurl.com/
  • http://shurl.org/
  • http://shrinkster.com/
  • http://tinyurl.com/
  • http://clipurl.com/
  • http://shorl.com/
  • http://goo.gl


url tersebut begitu pendek, sebenarnya memang digunakan untuk memperpendek alamat url atau disebut juga url shortening.

Url Shortening kini makin banyak dijumpai di dunia maya, apalagi di situs jejaring sosial seperti twitter, twitter merupakan jejaring sosial yang mengizinkan penggunanya berbagi status terkini dengan jumlah panjang maksimum 140 karakter. Jika kita ingin memberitahu teman kita sebuah alamat web yang menarik, namun panjangnya lebih dari 140 karakter bagaimana caranya? Nah di sinilah kegunaan URL shortening. Url Shortening adalah layanan untuk memperpendek url kita, misal url untuk halaman ini adalah http://www.erainformatika.com/?p=162 setelah diperpendek menjadi http://bit.ly/cbAEuV . Untuk memperpendek url tersebut caranya adalah kita tinggal masuk misal ke layanan bit.ly http://bit.ly kemudian masukkan url yang akan kita perpendek, setelah klik tombol shorten kita akan mendapatkan short url tersebut.


Lalu bagaimana caranya Algoritma URL tersebut bekerja hingga bisa memperpendek URL?

Sebuah layanan memperpendek URL mengambil URL besar dan menyimpannya ke dalam database bersama dengan otomatis menambah nilai numerik, sebuah id atau urutan, jadi kita akan memiliki URL besar pertama disimpan dengan ID = 1, yang kedua dengan ID = 2 dan seterusnya . Ketika seseorang akan meminta http://tinyurl.com/1/ kita akan mendapatkan dari database URL besar diidentifikasi oleh 1 = ID dan mengarahkan pengguna ke URL.

Tapi ada masalah: memiliki id numerik tidak terlalu banyak mempersingkat url. Untuk nomor URL 1.000.000 maka akan ada 7 karakter numerik. Jadi, langkah berikutnya adalah mengubah nomor basis dari 10 sampai yang lebih besar, katakanlah 36, jadi akan terdapat semua huruf latin kecil atau az, atau juga bisa dengan basis 62 yang termasuk juga karakter kapital AZ. Dalam basis 36 kita dapat menyimpan sebanyak 1.679.615 URL menjadi 4 karakter. Pada basis 62 dapat menampung 14.776.335 URL, hampir 10 kali lipat dari base 32 dan 14,776 kali dari base10.


Efek Negatif Shorting URL

  • Penipuan : banyak para penipu menggunakan shorting url ini untuk menipu seseorang. Misalnya, mengirim link bokep agar tidak ketahuan dia menggunakan shorting url ini.



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