Apache Kafka is a publish-subscribe messaging system. A messaging queue lets you send messages between processes, applications, and servers. In this article, we will see how to send JSON messages to Apache Kafka in a spring boot application....

Windows, Apache, MySQL and PHP is commonly abbreviated as WAMP. Some people may confuse with LAMP but the only difference between the two is their operating systems. In case of LAMP, L stands for Linux. Setting up a server included the installation of all the software listed in the abbreviation. Another version is MAMP, which is for Mac....

Apache Kafka is a publish-subscribe messaging system. A messaging queue lets you send messages between processes, applications, and servers. In this article, we will see how to send string messages to Apache Kafka in a spring boot application....

A Web Stack or Web application stack refers to a compilation of software that is together used to build websites or web applications....

Difference between LAMP and LEMP stack :A Web Stack or Web application stack refers to a compilation of software that is together used to build websites or web applications....

1. MEAN Stack Developer: MEAN refers to...

Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP, the protocol over which data is sent between your browser and the website that you are connected to. The ‘S’ at the end of HTTPS stands for ‘Secure’. It means all communications between your browser and the website are encrypted....

WordPress is one of the commonly used Content Management systems on the web. It is written in PHP web servers like Apache are enough to run it. WordPress supports MySQL and MariaDB, but MySQL is widely used. This tutorial will help you to run WordPress using the LAMP(Linux, Apache, MySQL, PHP) stack on your Linux machine (probably VPS)....

Apache Cordova is hybrid mobile development framework used to create mobile apps out of progressive web applications. However, Apache Cordova is used to make mobile apps using web view and it cannot be used for native android app development. The downside to web view applications is that it is slower in performing than native applications, nonetheless, this is not enough difference to have any noticeable changes in the performance speeds....

Apache Cordova is an open-source platform for developing mobile apps through web applications like HTML, CSS, JavaScript. Cordova is very useful to web-developers as they can turn their web pages to a web app with native app functionalities easily using Cordova. This is an extremely helpful feature as normal web apps don’t have this functionality....

Kafka Streams is a library for processing and analyzing data stored in Kafka. It expands on crucial stream processing ideas such as clearly separating event time from processing time, allowing for windows, and managing and querying application information simply but effectively in real time. Kafka Streams has a low entry barrier since it is easy to create and operate a small-scale proof-of-concept on a single system. To scale up to high-volume production workloads, you merely need to run extra instances of your application on numerous machines. By utilizing Kafka’s parallelism paradigm, Kafka Streams transparently manages the load balancing of numerous instances of the same application....

The function that allows the user to query on more than one row of a table returning the previous row in the table is known as lag in Python. Apart from returning the offset value, the lag function also gives us the feature to set the default value in spite of None in the column. The setting of the default value is optional but it proves to b useful numerous times. In this article, we will discuss regarding the same, i.e., setting the default value for pyspark.sql.functions.lag to a value within the current row....