Question

• It is known that google has best searching & indexing algorithm.
• The also have good relevancy.
• They are also quicker in getting down the latest results.

All that’s fine.

What programming language (c, c++, java, etc…) & database (oracle, MySQL, etc…) have they used in achieving this (since they have to manipulate with volume of data quickly and effectively)?.

Though I’m not looking for their in-depth architecture (if in case violates their company policies) an overview of all such things could be useful.

Anybody please add you valuable suggestions and insight on this?

Answer 1

Google internally use C++, Java and Python. See Rhino on Rails:

One of the (hundreds of) cool things
about working for Google is that they
let teams experiment, as long as it’s
done within certain broad and
well-defined boundaries. One of the
fences in this big playground is your
choice of programming language. You
have to play inside the fence defined
by C++, Java, Python, and JavaScript.

Google’s search algorithm is essentially MapReduce, which stems from functional programming techniques, implemented in C++.

Google has its own storage mechanism for this called the Google File System.