Question

How can we create a search engine like Google

Answer 1

There are many components: parser (parse and tokenize text to be searched), index builder (build index for parsed text), query compiler (parse and compile query), query optimizer (augment and optimize query for better search quality and speed), matcher (boolean match to sift out docs that don't have query terms), ranker (rank matched docs according to their relevance to the query), snippet generator (generate search result), ... Each component may be broken down to several sub-components. For example, index builder involves sophisticated algorithms to compress, decompress, merge, cache indexes.

Answer 2

Hi,

Making search engine is not a joke... google has hired thousands of world class developers and they are still improving it... so even thinking of that "How to make a searach engine LIKE google".. is just like a joke.