Discussions Key Value Stores

How do I make maximum use of hbase? What is the best way to work with hbase integration? Can I use it for RDBMS purposes?

I am a fond user of SQL hence this question. Also HBase is one of the older players in the market so what are your plans to compete with Apache DRUID? Apache Superset is also a great tool for visualization. Do you have any plans to integrate HBase with Apache Superset?

Other features which we can use of HBase other than just storing data.

In HBase, we cannot implement any cross data operations and joining operations, of course, we can implement the joining operations using MapReduce, which would take a lot of time to designing and development. How we can improve this and reduce the timings??

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How can I move data from an RDBMS to DataStax Enterprise?

DSE and In-Memory

DataStax Enterprise Security

Benefits of running Spark Analytics within DataStax Enterprise

Analytics and Apache Cassandra ™ in DSE

What is DataStax Enterprise?

What’s the best way to get started on Aerospike Enterprise edition?

Benefits of Aerospike Enterprise Edition

Can I install Aerospike in a cloud environment?

Does Aerospike offer a free trial?

Industries or verticals served

Use cases

Why should I select Aerospike vs. other RDBMS or NoSQL solutions?

In Riak, you can set an R value for reads and a W value for writes. These values give you control over how many replicas must respond to a request for it to succeed. Let’s say that you have an N value of 3 (aka n_val=3) for a particular key/value pair, but one of the physical nodes responsible... Lire la suite

When an outdated replica is returned as part of a read request, Riak will automatically update the out-of-sync replica to make it consistent. Read repair, a self-healing property of the database, will even update a replica that returns a not_found in the event that a node loses the data due to... Lire la suite

If you are not interested in dealing with version conflicts on the application side, Riak Data Types offer a powerful yet easy-to-use means of storing certain types of data while allowing Riak to handle merge conflicts. These conflicts are resolved automatically by Riak using Data Type-specific... Lire la suite

In any system that replicates data, conflicts can arise, for example when two clients update the same object at the exact same time or when not all updates have yet reached hardware that is experiencing lag. In Riak, replicas are eventually consistent, meaning that while data is always... Lire la suite

Hinted handoff enables Riak to handle node failure. If a node goes down, a neighboring node will take over its storage operations. When the failed node returns, the updates received by the neighboring node are handed back to it. This ensures that availability for writes and updates is maintained... Lire la suite

Riak retains fault tolerance, data integrity, and availability even in failure conditions such as hardware failure and network partitions. Riak has a number of means of addressing these scenarios and other bumps in the road, like version conflicts in data.

Riak’s replication scheme ensures that you can still read, write, and update data if nodes go down. Riak allows you to set a replication variable, N (also known as the n_val), that specifies the number of nodes on which a value will be replicated. An n_val value of 3 (the default) means that... Lire la suite

Data is distributed across nodes using consistent hashing. Consistent hashing ensures that data is evenly distributed around the cluster and makes possible the automatic redistribution of data as the cluster scales.

When you add (or remove) machines, data is rebalanced automatically with no downtime. New machines claim data until ownership is equally spread around the cluster, with the resulting cluster status updates shared to every node via a gossip protocol and used to route requests. This is what makes... Lire la suite

A Riak node is not quite the same as a server, but in a production environment the two should be equivalent. A developer may run multiple nodes on a single laptop, but this would never be advisable in a real production cluster. Each node in a Riak cluster is equivalent, containing a complete,... Lire la suite

A Riak cluster is a group of nodes that are in constant communication to ensure data availability and partition tolerance.

We recommend running no fewer than 5 data servers in a cluster. This means that Riak can be overkill for small databases. If you’re not already sure that you will need a distributed database, there’s a good chance that you won’t need Riak. If explosive growth is a possibility, however, you are... Lire la suite

If your data does not fit on a single server and demands a distributed database architecture, you should take a close look at Riak as a potential solution to your data availability issues. Getting distributed databases right is very difficult, and Riak was built to address the problem of data... Lire la suite

Riak is a distributed database designed to deliver maximum data availability by distributing data across multiple servers. As long as your Riak client can reach one Riak server, it should be able to write data. While Riak is typically known as an eventually consistent system, beginning with... Lire la suite

So far I’ve integrated Berkeley with java and Flutter but I’m curious about other popular languages out there as php, .net

How to use vpcs, security groups and other options in aws to secure the Amazon dynamo db instance ?

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