How Search Engine Works? Crawling, Indexing, and Ranking - Complete Explanation
How Do Search Engines Work?
Introduction to Search Engines
- Harmeet introduces the topic of search engines and mentions the use of a new microphone for better audio quality.
- He reflects on his previous misconceptions about how search engines function, specifically regarding the process of retrieving information.
The Process of Searching
- Harmeet explains that before a user types a query, search engines like Google perform several functions to prepare for searches.
- He describes Google's crawler (or spider), which collects data from websites by crawling through content and sending it to Google's local server for storage.
Data Indexing
- The role of indexers is introduced; they categorize the crawled data into different sections for efficient retrieval.
- An example is provided where various types of dresses are categorized, illustrating how indexers organize data based on relevance.
Analogy: Library Management
- Harmeet uses an analogy involving a library to explain the roles within search engine operations:
- The first peon represents the crawler, collecting all books (data).
- The second peon symbolizes the indexer, who organizes books into categories.
User Query Handling
- The third peon represents how user queries are handled; he retrieves relevant information based on what users request.
- This process mirrors how Google operates: crawling, indexing, and then using ranking algorithms to deliver results.
Ranking Algorithms and SERP
- Harmeet discusses ranking algorithms that determine which results appear first in response to user queries.
Understanding SEO: Beyond Just Ranking
Overview of the Course
- The course aims to provide a comprehensive understanding of SEO, not limited to just ranking.
- Viewers will find a link in the description box for accessing the complete SEO course.
Key Concepts in SEO
- The discussion will cover essential aspects such as better crawling and indexing of web pages.
- While ranking is an important topic, it is only one part of the broader SEO strategy.