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The Apache Cassandra Project

The Apache Cassandra Project
Cassandra Welcome to Apache Cassandra The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data. Cassandra's support for replicating across multiple datacenters is best-in-class, providing lower latency for your users and the peace of mind of knowing that you can survive regional outages. Cassandra's data model offers the convenience of column indexes with the performance of log-structured updates, strong support for denormalization and materialized views, and powerful built-in caching.

22 free tools for data visualization and analysis You may not think you've got much in common with an investigative journalist or an academic medical researcher. But if you're trying to extract useful information from an ever-increasing inflow of data, you'll likely find visualization useful -- whether it's to show patterns or trends with graphics instead of mountains of text, or to try to explain complex issues to a nontechnical audience. There are many tools around to help turn data into graphics, but they can carry hefty price tags. The cost can make sense for professionals whose primary job is to find meaning in mountains of information, but you might not be able to justify such an expense if you or your users only need a graphics application from time to time, or if your budget for new tools is somewhat limited.

Zabbix Agent Installer Content This package is made for installing Zabbix agent (compiled by ZABBIX SIA) on windows environement. The packages includes: zabbix_agent for W32 & w64, zabbix_sender and zabbix_get - from source code (precompiled from zabbix SIA) Since 2006 the package is evoluating but it would be better with your ideas or suggestions, so don't hesitate to send me a mail at

How To Create a New User and Grant Permissions in MySQL What the Red Means The lines that the user needs to enter or customize will be in red in this tutorial! The rest should mostly be copy-and-pastable. About MySQL MySQL is an open source database management software that helps users store, organize, and later retrieve data. It has a variety of options to grant specific users nuanced permissions within the tables and databases—this tutorial will give a short overview of a few of the many options.

Programmer’s Toolbox Part 3: Consistent Hashing « Next up in the toolbox series is an idea so good it deserves an entire article all to itself: consistent hashing. Let’s say you’re a hot startup and your database is starting to slow down. You decide to cache some results so that you can render web pages more quickly. GettingStarted Cassandra documentation from DataStax DataStax's latest Cassandra documentation covers topics from installation to troubleshooting, including a Quick Start Guide. Documentation for older releases is also available. Introduction This document aims to provide a few easy to follow steps to take the first-time user from installation, to running single node Cassandra, and overview to configure multinode cluster.

Big Data Is As Misunderstood As Twitter Was Back In 2008 Boonsri Dickinson, Business Insider In 2008, when Howard Lindzon started StockTwits, no one knew what Twitter was. Obviously, that has changed. Now that Twitter is more of a mainstream communication channel, Lindzon has figured out the secret to getting past all the noise on Twitter. By using human curation, StockTwits can serve up relevant social media content to major players like MSN Money. Maps for the lazy Creating complex maps is a time-consuming job. Actually, even designing a rather small map of 25 elements can take you an hour. That’s time you rather want to spend on something useful or fun, unless you’ve got a fetish for repetitive work.

3.3.3 Loading Data into a Table 3.3.3 Loading Data into a Table After creating your table, you need to populate it. The LOAD DATA and INSERT statements are useful for this. Suppose that your pet records can be described as shown here. (Observe that MySQL expects dates in 'YYYY-MM-DD' format; this may be different from what you are used to.) Because you are beginning with an empty table, an easy way to populate it is to create a text file containing a row for each of your animals, then load the contents of the file into the table with a single statement.

Related:  Systems and MethodscassandraColumn Orientedbigdataaidanbairdcassandrawide column storeNoSQLNoSQL and Graph Data Bases