Cassandra File System Design | DatastaxAstra DB gives JavaScript developers a complete data API and out-of-the-box integrations that make it easier to build production RAG apps with high relevancy and low latency.
Shudo's Notes (2011/7)
技術フェチ日記 (2011年 7月) 先月, 来月 へ 一覧へ 首藤のページへ 2011/7/31 (日) 今月のまとめ。 4(月): 前期の講義が完了。 4(月): アマゾン HPC NIGHT & hamhei, monja415 のシェアハウスにおじゃま。 10(日)〜17(日): 米国西海岸 出張。 Cassandra SF 2011 参加 + 宣伝は序の口で、本当にいろいろな方にお会いできた。 24(日): お台場合衆国でユン・シユン。 26(火)〜31(日): 鹿児島 / 大阪 出張。 胸熱の成果報告会。 出張の summary。 5泊 6日。 26(火): 鹿児島へ。 27(水): SWoPP。 28(木): SWoPP。 29(金): 大阪へ。未踏ユース成果報告会の内覧会。 30(土): 未踏ユース成果報告会。 31(日): 未踏ユース成果報告会。帰宅。 帰宅。 おみやげは
Riak and Cassandra and HBase, oh my! « Blog of Data
We are marching along in our integration of HBase with the Socorro Crash Stats project, but I wanted to take a minute away from that to talk about a separate project the Metrics team has also been involved with. Mozilla Labs Test Pilot is a project to experiment and analyze data from real world Firefox users to discover quantifiable ways to improve our user experience. I was very interested and e
What’s new in Cassandra 0.7: Secondary indexes | Datastax
Deprecation warning This post covers the obsolete Cassandra 0.7. Modern Cassandra manipulates indexes using CQL. Overview In Cassandra, indexes on column values are called "secondary indexes," to distinguish them from the index on the row key that all ColumnFamilies have. Secondary indexes allow querying by value and can be built in the background automatically without blocking reads or writes. Th
What’s new in Cassandra 0.7: Hadoop output to Cassandra | DataStax
Spotlight InfoWorld Technology of the Year DataStax Enterprise has been named a 2019 InfoWorld Technology of the Year Read Now Overview In Cassandra 0.6, we created a ColumnFamilyInputFormat, allowing you to read data stored in Cassandra from a Hadoop mapreduce job. However, you had to write the output from these jobs to a local file or HDFS, or manually connect to Cassandra in your reducer to sto
New Features in Cassandra 0.7 | Rackspace Cloud Computing & Hosting
Rackspace continues to be dedicated to open source software, including contributing resources to the Apache Cassandra project and founding OpenStack, the open-source cloud platform. The Apache Cassandra team is in the process of rolling up a release candidate for Cassandra 0.7. That makes this a good time to highlight some of the new features and changes that will be in this version. Big Changes
Apache Cassandra Glossary
This is the glossary of terms that are important to understand when working with Apache Cassandra. There's a lot of really good material at http://wiki.apache.org/cassandra. But the first time you read the available Cassandra documentation or attempt to follow a thread on the user list can be tricky, as each new term seems to be explained only with other terms that are new too. Many of these conce
Cassandra By Example | Rackspace Cloud Computing & Hosting
Cassandra has received a lot of attention of late, and more people are now evaluating it for their organization. As these folks work to get up to speed, the shortcomings in our documentation become all the more apparent. Easily, the worst of these is explaining the data model to those with an existing background in relational databases. The problem is that Cassandra’s data model is different enoug
Cassandra : inverted index – Port twenty two
Cassandra is the only NOSQL datastore I’m aware of, which is scalable, distributed, self replicating, eventually consistent, schema-less key-value store running on java which doesn’t have a single point of failure. HBase could also match most of these requirements, but Cassandra is easier to manage due to its tiny footprint. The one thing Cassandra doesn’t do today is indexing columns. Lets
Cassandra: RandomPartitioner vs OrderPreservingPartitioner
Occasionally useful posts about RIAs, Web scale computing & miscellanea When building a Cassandra cluster, the “key” question (sorry, that’s weak) is whether to use the RandomPartitioner (RP), or the OrderPreservingPartitioner (OPP). These control how your data is distributed over your nodes. Once you have chosen your partitioner, you cannot change without wiping your data, so think carefully! For
Operations - Cassandra Wiki
Search: Cassandra Wiki Login Operations FrontPageRecentChangesFindPageHelpContentsOperations Immutable PageCommentsInfoAttachments More Actions: Superseded by the docs here. Operations (last edited 2016-08-15 15:43:57 by JonathanEllis) Immutable PageCommentsInfoAttachments More Actions: MoinMoin PoweredPython PoweredGPL licensedValid HTML 4.01
Understanding Cassandra Code Base | PrettyPrint.me
Lately I’ve been adding some random small features to cassandra so I took the time to have a closer look at the internal design of the system. While with some features added, such as an embedded service, I could have certainly get away without good understanding of the codebase and design, others, such as the truncate feature require good understanding of the various algorithms used, such as how
HBase vs Cassandra: why we moved
Occasionally useful posts about RIAs, Web scale computing & miscellanea My team is currently working on a brand new product – the forthcoming MMO www.FightMyMonster.com. This has given us the luxury of building against a NOSQL database, which means we can put the horrors of MySQL sharding and expensive scalability behind us. Recently a few people have been asking why we seem to have changed our pr
ArchitectureGossip - Cassandra Wiki
Gossiper The gossiper is responsible for making sure every node in the system eventually knows important information about every other node's state, including those that are unreachable or not yet in the cluster when any given state change occurs. API Information to gossip is wrapped in an ApplicationState object, which is essentially a key/value pair. (See "Data Structures" below for more detail.
cassandra調査レポート
個人的な興味からcassandraについてしらべてみました。 間違っている部分など、指摘や質問などあればお知らせいただけるとうれしいです。Read less
Cassandra: Fact vs fiction
Cassandra has seen some impressive adoption success over the past months, leading some to conclude that Cassandra is the frontrunner in the highly scalable databases space (a subset of the hot NoSQL category). Among all the attention, some misunderstandings have been propagated, which I'd like to clear up. Fiction: "Cassandra relies on high-speed fiber between datacenters" and can't reliably repli
Cassandra in action
There's been a lot of new articles about Cassandra deployments in the past month, enough that I thought it would be useful to summarize in a post. Ryan King explained in an interview with Alex Popescu why Twitter is moving to Cassandra for tweet storage, and why they selected Cassandra over the alternatives. My experience is that the more someone understands large systems and the problems you can
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https://allthingshadoop.com/2010/04/24/running-hadoop-mapreduce-with-cassandra-nosql/
