python cassandra

Here we start to use Java to operate the Cassandra database, not limited to client operations. For operations on the client Cassandra-CLI and nodetool, you can use the help command on the command line to get a lot of help. I am using thrift to operate databases. This is a relatively low-level method that uses the most basic API directly. Although there are more advanced methods to operate, it is still neces

Summary This paper mainly introduces the index in Cassandra, materialized view, some knowledge points need to have a basic understanding of Cassandra to understand. such as how the data is distributed in the Cassandra node. If there is something you don't understand, you can read the article before this column. or send me an email and discuss cnstonefang@gmail.c

previous article Cassandra The Getting Started guide, we've configured a single node cluster, and then we'll add a few more nodes to the cluster to see how multiple nodes work at the same time.The exchange of information between Cassandra nodes is through a mechanism called gossip (which is not known for a moment to be appropriate for which proper noun to translate). But to get a message to a newly added no

In the previous articleArticleUsing Binary memtable to import large amounts of data into cassandra explains how to use binary memtable to import large amounts of data into Cassandra. This week, we have been watching if we use binary memtable to import a large amount of data. Today, I still think this version is not suitable for importing data. The reason is as follows: In0.6 +Version,CassandraCl

Cassandra may not be interested in being a nosql, but it's fascinating to do certain jobs, as Netflix and Instagram two companies must know.Over the years, NoSQL participants, such as MongoDB, have gotten a lot of attention, but the halo of Apache Cassandra has faded, and Facebook, which created Cassandra, has given up on it, The community of

1. Inverse entropyThe Cassandra database draws on Amazon's Dynamo in a distributed architecture, and references Google's bigtable on the data storage model. So in the data consistency and dynamo and BigTable have a deep connection, inverse entropy mechanism is a manifestation of this connection. inverse entropy, like the gossip protocol, is an algorithm based on infectious disease theory, which is mainly used to ensure that data on different n

Recently installed Cassandra to the product server, a lot of things require a lot of strict, such as Perf used in the JMX, previously as long as the IP can access, but the product server is not, so there is a security risk, nodetool-h host can add and delete nodes. So the thing to talk about today is Cassandra JMX's authorization and access control. Here is the first, the most common use of passwords and a

Cassandra all clients: http://wiki.apache.org/cassandra/ClientOptions Astyanax claims to be the son of Hector, And the API looks quite attractive. Unfortunately, there is no full-package download, and the project is Maven (not like Maven ). Hector looks good. If you are not familiar with other things, just grab a Hector. Reference Hector example: Me. prettyprint. Cassan