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Search
The Scale of the Web
Trillions
of Indexed URLs
~8.5+ Billion
Searches per day
And we need instant retrieval.
1. Crawling
Discovering the known universe
Spiders (Bots) follow links from page to page and scan and index metdatata & content.
2. Indexing
Building the library
Files
Images
HTML
⮕
Dictionary
Keywords
Reverse Index: Mapping words to documents.
Searching in action
Search Demo
Article
search.example/
Web browser: Software that fetches pages from servers, renders HTML/CSS/JS, and lets you navigate websites.
Various Web Browsers
Software we use to browse the web
Google Chrome
Fast and popular, based on the Chromium engine.
Mozilla Firefox
Open-source browser with strong privacy controls. Based on the Gecko engine.
Safari
Apple's browser, optimized for macOS and iOS devices. Based on the WebKit engine.
Microsoft Edge
Chromium-based browser.
3. Ranking
Finding the best result
Relevance
Quality
Usability
Context
➡
#1 Result