Tags » NOSQL

Business Intelligence-Data Visualization: Tableau

Spark, Bigdata, NoSQL, Hadoop are some of the most using and top in charts technologies that we frequently use in Knoldus, when these terms used than one thing comes into picture is ‘Huge Data, millions/billions of records’ Knoldus developers use these terms frequently, managing (and managing means here- storing data, rectifying data, normalizing it, cleaning it and much more) such amount of data is really not at all an easy task. 621 more words

Scala

Cassandra Counter Column And Table

CASSANDRA COUNTER COLUMN AND ITS VARIOUS OPERATIONS

A counter is a special column used to store an integer that is changed in increments.
Counters are useful for many data models. 548 more words

Scala

Cassandra Data Modeling - Primary , Clustering , Partition , Compound Keys

In this post we are going to discuss more about different keys available in Cassandra . Primary key concept in Cassandra is different from Relational databases. 1,337 more words

Scala

MongoDB current operations and profiling

Current operations

db.currentOp()

Write operations waiting for a lock

db.currentOp(
  {
    "waitingForLock" : true,
    $or: [
      { "op" : { "$in" : [ "insert", "update", "remove" ] } },
      { "query.findandmodify": { $exists: true } }
    ]
  }
) 168 more words

Real-world Cloud Big Data Patterns

Here’s a link to my slides from the workshop I delivered for QCon Sao Paulo, Brazil, “Real-world Cloud Big Data Patterns”

Enjoy!

Cloud

Moving data from Oracle to Couchbase

One request I found frequently in customers is about moving data between Oracle and Couchbase. Oracle is a widely deployed relational database, and customers moving to Couchbase have this starting point challenge. 688 more words

Couchbase