Thread: What Database does Google use?

Does google have their own way of storing data or they use commercial databases like Oracle etc?

Google uses Bigtable as their database. This database is built and developed by Google.

Bigtable is a distributed storage system (built by Google) for managing structured data that is designed to scale to a very large size: petabytes of data across thousands of commodity servers.

Many projects at Google store data in Bigtable, including web indexing, Google Earth, and Google Finance. These applications place very different demands on Bigtable, both in terms of data size (from URLs to web pages to satellite imagery) and latency requirements (from backend bulk processing to real-time data serving).

Despite these varied demands, Bigtable has successfully provided a flexible, high-performance solution for all of these Google products.

Old Answer before edit: Upto my knowledge they don't use database for storing the information what we search in google. They use something like hierarchical structure

Sorry, I don't know about Google database structure. Let's keep hope, someone will give us answer.

that is "Bigtable"

Wiki :

BigTable is a compressed, high performance, and proprietary database system built on Google File System (GFS), Chubby Lock Service, and a few other Google programs; it is currently not distributed or used outside of Google, although Google offers access to it as part of their Google App Engine.

I am not able to post link due to my low post count

but you can search over google "bigtable" to read more about that :-)

Google File System for their indexing and data returned by the crawlers. Usually Google's other applications use MySQL or and Oracle database.

Originally Posted by loan_stores

Google File System for their indexing and data returned by the crawlers. Usually Google's other applications use MySQL or and Oracle database.

they are using sql and oracle for bigtable blackened. (source google employee)

Originally Posted by DxSEO

that is "Bigtable"

Wiki :

BigTable is a compressed, high performance, and proprietary database system built on Google File System (GFS), Chubby Lock Service, and a few other Google programs; it is currently not distributed or used outside of Google, although Google offers access to it as part of their Google App Engine.

I am not able to post link due to my low post count

but you can search over google "bigtable" to read more about that :-)

Of course they use their own. I've heard the entire index resides entirely in memory for faster searching. A memory table. I've always wanted to play with one on a website of my own but never have.

That's quiet a good information for me. It's an additional knowledge for me.

Thanks for this piece of information i only knew just the name of bigtable didnt know that evern oracle was involved with google well thats news for me

I dont know what is the database of Google. But according to some news, Google use oracle database.