Dictionaries in Swift are like containers that hold pairs of information: a key and its corresponding value. Think of them as organized lists where each item has a unique label (key) associated with some data (value). In this tutorial, you will learn how to create a new, empty dictionary in Swift. There are a few…
Read More Create an Empty Dictionary in SwiftIn this tutorial, you will learn how to implement Kafka Producer in a Spring Boot Microservice. A Kafka Producer is an application that sends messages to a Kafka topic, which can be consumed by other microservices. You will use Spring for Apache Kafka dependency to configure and create a Kafka Producer in your Spring Boot…
Read More Kafka Producer in Spring Boot MicroserviceIn this tutorial, you will learn how to create your first Kafka cluster. You will learn how to start three Kafka servers in a cluster using KRaft mode. If you want to run just one server in a cluster, then read “Start Apache Kafka Server in KRaft mode” tutorial. Starting more than one server in…
Read More Kafka Cluster: How to Start 3 Kafka Servers in a ClusterFunctions are a very important concept in programming. They allow us to write code once, and run it as many times as we want. As the official documentation states, “Functions are self-contained chunks of code that perform a specific task”. In this tutorial, you will learn how to create functions in Swift and how you can…
Read More Create a Function in SwiftIn this tutorial, you will learn how to produce and consume messages in order using the Kafka command-line interface (CLI). You will also learn how to use a key to group and identify the messages, and how to specify a separator between the key and the value. What is Kafka CLI? Kafka CLI is a…
Read More Kafka CLI: Produce and Consume Messages in OrderIn this tutorial, you will learn how to start Apache Kafka Server with KRaft, a new consensus protocol that replaces ZooKeeper for metadata management. KRaft simplifies Kafka’s architecture and improves its performance and stability. You can read more about KRaft here and here. Step 1: Generate a Cluster UUID Before you can start Apache Kafka server on your…
Read More How to Start Apache Kafka Server with KRaftIn this guide, you will learn more about Kafka Topic, the core structure for data within Kafka. You will learn how to create, manage, and utilize Kafka Topics effectively. Each step includes practical examples and straightforward explanations, ensuring a clear understanding. As you progress, you’ll gain essential skills and knowledge, focusing solely on Kafka Topics.…
Read More Apache Kafka Topic: A Comprehensive GuideIn this tutorial, you will learn how to install MySQL on Amazon EC2 Linux machine. If you’re new to this or have encountered issues with previous installations, you’re in the right place. If you want to learn how to run MySQL in a Docker container instead, then read this tutorial: How to start MySQL in…
Read More How to Install MySQL on Amazon EC2 LinuxIn this Swift tutorial, I’ll show you how to add new functionality to existing Swift classes using class extensions. It’s a powerful feature in Swift that lets you add your own methods or computed properties to already-defined classes, making them more versatile. Let’s start with a very simple example. Creating a Simple Extension In Swift,…
Read More Swift Class Extension ExplainedIn this tutorial, you will learn how to generate a custom JSON Web Token(JWT) and how to add and validate custom JWT Claims using the io.jsonwebtoken library. The JWT token generated in this tutorial will be signed with a SecretKey, making it secure and tamper-proof. Also, this tutorial assumes you have prior knowledge of creating…
Read More Generate JWT. Add and Validate Custom Claims.In this tutorial, I want to share with you how to add or update the configuration of an existing Kafka topic. You may need to update the configuration of an existing Kafka topic when you want to change the behaviour of the topic or when you want to optimize the performance of your Kafka cluster.…
Read More Updating Kafka Topic ConfigurationIn this lesson, you will learn how to consume messages or how to read messages from Apache Kafka topic using Kafka Consumer Command Line Interface(CLI). To learn how to produce or send messages to Kafka topic, please read the following tutorial: Kafka Producer CLI – Produce/Send message to Kafka topic. Consuming Messages From the Beginning…
Read More Kafka Consumer CLI – Consume/Read from Kafka TopicIn this tutorial, you will learn how to create a new Kafka Topic in a Spring Boot application. Kafka topics can also be created automatically when a new message is sent to them. However, in production environments, topic auto-creation is usually turned off. This is why creating Kafka topics before sending messages to them is considered…
Read More Creating Kafka Topic in Spring Boot ApplicationIn this lesson, you will learn how to produce a message or how to send a message to Kafka’s topic using Kafka Producer CLI. If your topic does not exist, it is better to create a new topic first. Message with a key or without a key When sending a message to a Kafka topic,…
Read More Kafka Producer CLI – Produce/Send Message to a TopicIn this tutorial, you will learn how to delete Apache Kafka topics using the Kafka Command-line Interface(CLI). Before Deleting Kafka Topic Before deleting a Kafka topic, there are a few things you should keep in mind: Deleting a topic is permanent: Once you delete it, it is gone forever. There is no way to undo…
Read More Delete Kafka Topic Tutorial