Big Data
Apache ZooKeeper Cluster Installation Guide
Introduction
ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by...
Code Example
Java REST Client POST with Cookie
In previous post I showed how to get cookie from server response with RestTemplate and exchange method.
In this article we will use that cookie in order to call other server API...
Code Example
Java REST Client Get Cookie From Server Response
Sometimes in order to be able to perform some actions via REST API server wants the client to be logged in. It may be done by sending to the client some...
Big Data
Configuring and Running Redis Cluster on Linux
Redis Cluster was released on April 1st, 2015. Since then Redis Cluster is the preferred way to get automatic sharding and high availability.
In this article you'll see step by step tutorials about how...
AWS
Get list of files and folders from specific Amazon S3 directory
Every item stored in Amazon S3 is object, not file, not folder, but object. This often confuses new programmers, because they used to deal with folders and files in file system....
Code Example
Looping Through a Map in Java
If you need to merge or add values to existing map, or may be perform some other operations for entire map you can use forEach lambda method.
For example let's see how...
