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Node.js and MongoDB Tutorial

Hello. In this tutorial, we will create a simple node.js application and perform the CRUD operations with the MongoDB. The node.js framework is commonly used to create server-based applications which are further used to show the contents to the users.  1. Introduction Let us first understand that what is Mongo database and set up Node.js. MongoDB is a high-performance NoSQL ...

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Top 5 NoSQL Database Programmers Should Learn in 2019

Though it’s not mandatory for a Java or Web developers to learn NoSQL database the world is moving in that direction and both Java and Web developer should be familiar with NoSQL databases. If you are wondering what is NoSQL database means then here is a quick overview. A NoSQL database refers to non SQL, non-relational or not only SQL) ...

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Build a Reactive App with Spring Boot and MongoDB

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“I love writing authentication and authorization code.” ~ No Java Developer Ever. Tired of building the same login screens over and over? Try the Okta API for hosted authentication, authorization, and multi-factor auth. Reactive apps allow you to scale better if you’re dealing with lots of streaming data. They’re non-blocking and tend to be more efficient because they’re not tying ...

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NoSql Databases: Cassandra vs Mongo vs Redis DB Comparison

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1. What are NoSql Databases? NoSql (Not only Sql) databases are non-relational databases that are horizontally scalable, persist semi or unstructured data and have flexible schemas. These databases support multiple data models such as key-value, document, column-family, graph based, in-memory etc. for managing and accessing data. NoSql databases are best suited for building modern applications, which require large data and ...

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Exploring the Spline Data Tracker and Visualization tool for Apache Spark (Part 2)

In part 1 we have learned how to test data lineage info collection with Spline from a Spark shell. The same can be done in any Scala or Java Spark application. The same dependencies for the Spark shell need to be registered in your build tool of choice (Maven, Gradle or sbt): groupId: za.co.absa.spline artifactId: spline-core version: 0.3.5 groupId: za.co.absa.spline artifactId: spline-persistence-mongo ...

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Exploring the Spline Data Tracker and Visualization tool for Apache Spark (Part 1)

One interesting and promising Open Source project that caught my attention lately is Spline, a data lineage tracking and visualization tool for Apache Spark, maintained at  Absa. This project consists of 2 parts: a Scala library that works on the drivers which, by analyzing the Spark execution plans, captures the data lineages and a web application which provides a UI to visualize them. ...

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MongoDB Index Strategies and Types of Indexes

1. MongoDB Index Strategies and Types of Indexes – Introduction MongoDB is an open-source, document-oriented, and cross-platform database which is developed in C++ and is one of the most popular and used NoSQL type databases. It works on top of JSON-like documents with key-value pairs whose schema can remain undefined across every document. Also, it is free to use as ...

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MongoDB Tutorial for Beginners

1. Introduction to MongoDB In this post, we feature a comprehensive MongoDB Tutorial that integrates with a Java-based application. Whenever we read about NoSQL databases, we need to know why were they ever developed when SQL databases were working excellent. NoSQL foundations grew upon relaxed ACID (atomicity, consistency, isolation, durability) guarantees in favour of performance, scalability, flexibility and reduced complexity. ...

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