![]() This is required because if our service is down, all the URL redirections will start failing. The system should be highly available.Links will expire after a specific timespan automatically users should also be able to specify expiration time.Users should optionally be able to pick a custom alias for their URL.When users access a shorter URL, our service should redirect them to the original link.Given a URL, our service should generate a shorter and unique alias of it.Our URL shortener system should meet the following requirements:.We should always clarify requirements at the beginning of the interview and should ask questions to find the exact scope of the system that the interviewer has in mind. Step-2: Requirements and Goals of the System ![]() URL shortening is used for optimizing links across devices, tracking individual links to analyze audience and campaign performance, and hiding affiliated original URLs, etc.The shortened URL is nearly 1/3rd of the size of the actual URL.A shorter version of any URL saves a lot of space whenever we use it e.g., when printing or tweeting as tweets having a character limit.Users are redirected to the original URL when they hit these aliases.URL shortening is used to create shorter aliases for long URLs.The solution of using a map is neither scalable nor durable.But he asks this to test our knowledge on scalability and durability.Where we take a longer url and generate the shorter url and store it in hash and return the longer-url from it.When interviewer asks this question it’s certain that he is not looking for a solution:.This question has some very interesting challenges specifically trying to design it at scale.Similar services: bit.ly, goo.gl, 2020.fm etc.Let’s design a URL shortening service like TinyURL, that will provide short aliases redirecting to long URLs.Home techblogs high-level-system-design design-tiny-url-service Design Tiny URL Service Problem Statement:
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