Memtables are conceptually a very simple thing. You have the list of values that you were provided, as well as a skip list for searches.
Today, DZone released its Data Mining Refcard, authored by Giuseppe Vettigli. We had a chance to sit down with Giuseppe to learn about his background and his experience authoring this Refcard.
We’re here for the final part in our Building a Private Cloud series and in today’s episode Keith Mayer and Yung Chou show us to manage our hybrid cloud environment with System Center 2012 SP1 App Controller.
We will discuss how to manage large numbers of clusters using Chef roles. We'll also discuss how to automatically snapshot your RAID arrays and reprovision from the latest set of snapshots . . .
This session from last year's OREDEV developer conference covers Cassandra's data model as well as its query idioms and how to deploy it.
In this presentation, you'll learn about why a NoSQL database may be the best fit for your mobile application, as well as explore some use cases for real-world deployments.
With the wide adoption of hosted commodity hardware, no-sql, REST, HTML5 and d3, we are entering a brave new world.
If you are wondering about the binary format, that is what this post is all about. We actually start from the end. We have the last 48 bytes of the file are dedicated to the footer.
Is your database holding back your application? Find out how we at RightScale use NoSQL databases such as Cassandra to provide a scalable, distributed, and highly available service around the world . .
When reading a SST, we have to deal with values of potentially large sizes. I want to avoid loading anything into managed memory if I can possible avoid it.
10gen recently announced a cloud-based backup service designed for MongoDB. Here's a slice of the announcement . . .
Here's a simple step-by-step tutorial for getting started with Redis on Ubuntu
When you make use of (some of the) Amazon services there is a big chance S3 is one of them for the storage of files, be it temporary or more permanent.
Server virtualization has been a great set of technologies to reduce our capital expenses and some operating expenses by consolidating a larger number of virtualized server workloads in a smaller footprint . . .
PHP has several built-in ways of serializing/unserializing data. The most cross-platform is json_encode; pretty much every programming stack can JSON decode data that . . .
This screencast by Michael Kennedy shows you the stark contrast in simplicity between an application using a relational database and one using a document database such as VoltDB, MongoDB . . .
Given that one of my most widely read blog posts is still MongoDB's Write Lock, I decided that my blog readers would also be interested in the quantitative comparison as well.
I found Redis to be a very interesting option to Memcached for use as caching layer:
A lot of our users upgrade from single-node databases to replica set clusters without fully understanding how their driver, and therefore their application, will react to failover
Aaron Morton, DataStax MVP fo Cassandra, presents this 1-hour introduction to Apache's NoSQL solution.
Here's a quick tutorial for adding documents using Java Couchdb4j.
I’ve been trying to see if I can match some of the football stats that OptaJoe posts on twitter and one that I was looking at yesterday was around the number of red cards different teams have received.
First of all, it is a short book and you can run through the pages fast. As the title says, the book is really an introduction to NoSQL databases.
Applying the lessons from the leveldb codebase isn’t going to be a straightforward task. I already discussed why we can’t just use leveldb directly, so I won’t go into that.
PostgreSQL has very good support for arrays of other data types. One can have nested data types where an attribute of a relation stores an array of tuples . . .