Introduction Apache Kafka is a distributed event streaming platform. Originally developed at LinkedIn, it is now an open-source project under the Apache Software Foundation. Kafka is widely used for building real-time data pipelines and streaming applications. What is Apache Kafka? Kafka is a messaging system that lets applications publish (write), subscribe (read), store, and process streams of data in real-time. Kafka Core Concepts 1. Producers and Consumers      Producers → Send data to Kafka topics.      Consumers → Read data from Kafka topics. 2. Topics and Partitions Topic → Logical channel for a specific type of data. Partition → Topi…

In XSLT (Extensible Stylesheet Language Transformations) 2.0 or later, we can perform several date and time manipulation processes. I thought of writing a blog post so others can easily find examples as well. Basic Date & Time XSLT Functions:  current-date() - Returns the current date of the server that XSLT runs current-time() - Returns the current time of the server that XSLT runs current-dateTime() - Returns the current date and time of the server that XSLT runs implicit-timezone() - Returns the implicit time zone of the server that XSLT runs < xsl : stylesheet xmlns : xsl = "http://www.w3.org/1999/XSL/Transform"    …

When developing a RESTful service (REST API) using Spring Boot, need to have clear understanding of some of the annotations provided by Spring Boot Web.  @RestController - RestController is class level annotation used to define a class as a rest full service and it also combines @Controller and @ResponseBody annotations. So the response object is automatically serialised into JSON format.   @RequestMapping - RequestMapping is used to map web requests to a specific controller or method. For RESTful services, the RequestMapping annotation is typically used at the class level, with HTTP method-specific annotations used at the method level. @…