List/Grid Tag Archives: NoSQL

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How to Use Projection in MongoDB?

In mongodb, projection means selecting only necessary data rather than selecting the whole data of a document. If a document has 5 fields and you need to show only 3, then select only ...
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Custom Cassandra Data Types

In the blog post Connecting to Cassandra from Java, I mentioned that one advantage for Java developers of Cassandra being implemented in Java is the ability to create custom Cassandra ...
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NoSQL – A Quick Guide

NoSQL is buzz word nowadays among the developers and software professionals. 1. What is NoSQL ? NoSQL database, also called Not Only SQL, is an approach to data management and database ...
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NoSQL on Android

There are various NoSQL solutions for mobile platforms such as the iOS and Android. Here, we will look at Couchbase Lite (CBL – the successor of TouchDB), a lightweight, full-featured, ...
apache-cassandra-logo

Connecting to Cassandra from Java

In my post Hello Cassandra, I looked at downloading the Cassandra NoSQL database and using cqlsh to connect to a Cassandra database. In this post, I look at the basics of connecting ...
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SharedHashMap vs Redis

Overview This is a comparison between OpenHFT’s SharedHashMap and a popular key-value store Redis. Any vendor will tell you how great their product is, so I will start by outlining ...
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Rocking with mongodb on spring boot

I’m a fan of Spring Boot and here’s my mongodb example project on Spring Boot. Most of the mongodb example projects are so basic that you won’t go far with them. You ...
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Hello Cassandra

A colleague recently told me about several benefits of Cassandra and I decided to try it out. Apache Cassandra is described in A Quick Introduction to Apache Cassandra as “one ...
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Seven Databases in Seven Weeks – Hbase Day 2

This post is a recap of the second day of Hbase from the Seven Databases in Seven Weeks book. Most of the commands and scripts can be found at GitHub: https://github.com/eyalgo/seven-dbs-in-seven-weeks/tree/master/hbase/day_2 Streaming ...
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MongoDB 2.6 is out

Introduction MongoDB is evolving rapidly. The 2.2 version introduced the aggregation framework as an alternative to the Map-Reduce query model. Generating aggregated reports is a recurrent ...
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