Cassandra does not comply with ACID like RDBMS, but CAP. Therefore, Cassandra selects AP from CAP and leaves it to the user for adjustment consistency.
I definitely can’t use it. Cassandra conduct
Tag: Cassandra
Performance – Why is Cassandra secondary index on 350K lines so slow?
I have a column family with a secondary index. The secondary index is basically a binary field, but I am using a string. The field named is_exported can be “true “Or “false”. After the request, all
Cassandra – RPC timeout error when deriving data from CQL
I am trying to export data from cassandra using CQL client. The column family contains about 100000 rows. When I use the COPY TO command to copy dta to a csv file, I get the following rpc_time out
Add a new node to the Cassandra cluster to ensure that the exact process of cluster keeps balanced?
I have read the relevant documents I can find, but I still have questions.
What did I read
From http://wiki.apache.org/cassandra/Operations#Moving_nodes up
If you add nodes to you
New Cassandra Cluster – The pit to be filled with immediately
Role-based authenticationThe business cluster is configured to enable role-based authentication by performing the following steps. The configuration steps are as follows:
Modify the authoriza
How to cluster embedded Cassandra instances?
I wrote a small application to start an embedded instance of Cassandra 1.2.
I am trying to run 3 instances of this application in Create a cluster of 3 embedded instances locally. Everyone lo
Cassandra cluster management – node abnormal restart
Cassandra cluster management-abnormal node restart Log in to a cluster node, directly restart the server (172.20.101.166), and set cassandra to boot.
This document is only a part of the syste
Cassandra Cluster Core Configuration and Scriber
Cassandra is a distributed structured data storage solution (NoSql database), with a richer storage structure than Key-Value databases (like Redis), but has limited support than Document databases
Cassandra Cluster Management – Replace Exception Nodes
Cassandra cluster management-replace abnormal node Replace abnormal cluster node, use JVM startup flag Dcassandra.replace_address_first_boot = to start. Once this attribute is enabled, the node wi
Cassandra Cluster Management – Add new node
Add a node to the Cassandra clusterNote This document is only a part of the system documentation. For details of the previous document information, please refer to:
https://blog.51cto.com/michaelk