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Import Data from Mongo DB to Elasticsearch using Elasticsearch River

Importing data from Mongo DB to Elasticsearch requires Mongo DB to have replica set enabled. Once the replica set is enabled, Mongo DB populates the oplog (operation log) as and when we add documents to the collection in the database (except database named local, which is used by Mongo DB to… Read More »

3D Printers – ALL YOU NEED TO KNOW

Electronic products are all around us. Printers are one such product that is used frequently in home, company, industry, etc. They are commercial product to make hard copies of documents, images and many more. A printer usually prints the content (2D content) on a paper. With the technological development we… Read More »

Linked List in C- Insert Node at End of Linked List

DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Try DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Linked List in C- Insert Node at End of Linked List : Source Code : #include<stdio.h> struct node *head=NULL; //Pointer to store the staring node of the linked list //Always stores the address location of first node… Read More »

Logstash – Process Same Log File (File Input) from Beginning/Start

Many might have faced this problem while using Logstash to process same log file from the beginning. The problem is that when you kill/stop a Logstash (file input) process and start it again, the process will continue from where Logstash left previously. For example, consider a logstash instance processing a file containing 1000… Read More »

Resolution Vs Pixel Density in Displays – ALL YOU NEED TO KNOW

Most of the entertainment gadgets or devices that we use has display or screen as a primary device. Some of the primary examples are televisions, computer monitors and smartphones. What makes a display to have more quality? Is the display size alone matters. NO! We have two main technical properties of display, Resolution… Read More »