Tag Archives: Databases

Using Hadoop and Couchbase

My new article on using Hadoop with Couchbase is available now on the IBM developerWorks site. 

The article tells you how to integrate the massive map/reduce functionality offered by Hadoop with the query functionality offered in Couchbase.                                                                                                                            

With this article you also get a live demo of the process in action, and an intro video for the problems at hand we are trying to solve: 

Read: Using Hadoop with Couchbase

Fortunately the article was also chosen as a feature article for the entire developerWorks site, and came with call picture of an elephant sitting on a couch!

Getting Started with Couchbase Server Published!

Extreme Scalability at Your FingertipsHaving not published a book in years, I’ve just published my second book in as many months. 

Getting Started with Couchbase Server provides an overview of the main administration and user information that you need to install, setup, manage, and develop against Couchbase Server. 

In the book, I’ve tried to cover the installation, and then the main admin tasks, such as rebalancing and expanding your cluster, along with backups and restore. 

Also in the book is some basic information on developing an application, including using the main operations and how you store and retreieve information in the cluster. 

The book is on Couchbase Server 1.8, so no views, but there should be enough for you get going. 

Get more information here.

The Technology Behind Couchbase

Couchbase Server is one product, but it’s made up of a combination of different components that work together in order to produce server product, including memcached and the spidermonkey JavaScript engine, and more recently the CouchDB engine for storage and index creation. 

An article covering more of the detail is available here: 


Moving from MySQL to CouchDB: Part 1

I’ve started a little series on how to migrate your MySQL applications and databases over to CouchDB. Most of the process is about how you think about your data, not about the database itself, the application, or the interface to the database storage. There are some use cases for data storage that lend themselves to the CouchDB document model that provides some advantages over the table-based structure in MySQL.

The first part of the series is Moving from MySQL to CouchDB: Part 1.

Reorganizing the documentation

Those of you that know the documentation well will be aware of the old page we used to have for the MySQL documentation. It was huge, and over the years we’d done a number of things to try and improve the layout and make it easier to find what you wanted. We had in-age links to jump to the different documentation types, and the old topic table that allowed you to jump to specific parts of the documentation.

The problem was that the more documentation that we produced (and there are over a thousand docs in various formats now), the bigger the page got. When we added the individual topic guides, for example, we trebled the size of the page by adding the links for each individual topic guide.

Ultimately that makes it increasingly difficult for you guys to find what you are looking for, despite the quick links and other elements.

We’ve now changed all this and split the single, big, monolithic page of *every* piece of documentation that we create, and instead spread the documentation out over a number of pages. The actual documentation itself remains the same, and we still have the same range of documentation (in fact, it’s increased slightly as I’ve been able to squeeze in a few more formats and topic guide docs), but everything is still there.

The key is the new sub-navigation bar that the Web team have provided us with:

The pages have been split out as follows:

  • MySQL Manual — the full, complete reference manuals
  • Workbench — the Workbench manuals
  • Expert Guides — the standalone guides for some of our more detailed products and system such as the Falcon storage engine and the MySQL Test Framework
  • Topic Guides — the topic reference, with the topic table at the top providing direct links into the 5.1 manual or standalone guides, and the full list of downloadable standalone guides.
  • MySQL Cluster — the full cluster manuals, including the guide to the MySQL Cluster API (NDBAPI)
  • Other docs — other documentation, not already mentioned, including the sample databases (Sakila, World, Employee), the help tables you can import into MySQL, and printed material and links elsewhere.
  • MySQL Uni — a page about the MySQL University, which is run by the documentation team, and which provides links to the MySQL Uni pages on Forge
  • About — information about the documentation team, who we are, and some statistics on the documentation we produce
  • Archives — archives of older manuals

We are aware of a few issues with some of the links to some documentation, and I’m working right now to address those problems, but all the documentation should be there and available. If it isn’t, please report a Bug.