Learnitweb

Author: Editorial Team

  • Implementing Circuit Breaker Pattern in Gateway

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    Introduction In this tutorial, we’ll implement circuit breaker pattern in gateway using resilience4j. Dependency Add the following dependency to the pom.xml: spring-cloud-starter-circuitbreaker-reactor-resilience4j is a Spring Boot starter that integrates Resilience4j with Spring Cloud Circuit Breaker in reactive applications using Project Reactor (WebFlux). Adding Circuit Breaker In the earlier tutorials we added filters to rewrite path.…

  • Circuit Breaker pattern

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    Introduction The Circuit Breaker Pattern is a software design pattern used to improve the stability and resilience of distributed systems. It helps prevent repeated failures when a system or service is experiencing issues, reducing the risk of cascading failures. Why is it Needed? In modern microservices and cloud-based architectures, services depend on multiple external components…

  • Introduction to the resiliency inside microservices

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    Introduction In today’s fast-paced digital landscape, microservices have become the backbone of modern applications. They offer scalability, flexibility, and faster deployment cycles, allowing businesses to respond quickly to changing market demands. However, with these advantages come new challenges, particularly in ensuring resiliency—the ability of microservices to withstand failures and recover without disrupting the entire system.…

  • Gateway Routing Pattern

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    Introduction The Gateway Routing Pattern is a design pattern used in microservices architecture to route client requests through a single entry point, known as an API Gateway. The gateway handles authentication, request routing, load balancing, monitoring, and more. This pattern enhances security, reduces direct client interaction with internal microservices, and simplifies the architecture. The pattern…

  • Bridge Design Pattern in Java

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    Introduction The Bridge Design Pattern is a structural pattern that is used to decouple an abstraction from its implementation, so that both can evolve independently. This pattern is particularly useful when designing applications that require multiple variations of an abstraction and its implementation, without leading to a combinatorial explosion of subclasses. By using the bridge…

  • Singleton Design Pattern in Java

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    1. Introduction The Singleton Design Pattern ensures that a class has only one instance and provides a global point of access to it. This pattern is widely used in scenarios where only one instance of a class is required, such as managing database connections, logging, thread pools, or caching. 2. Key Characteristics of Singleton Pattern…

  • What is Kafka Connect?

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    Kafka Connect is a free, open-source component of Apache Kafka® that serves as a centralized data hub for simple data integration between databases, key-value stores, search indexes, and file systems. You can use Kafka Connect to stream data between Apache Kafka® and other data systems and quickly create connectors that move large data sets in…

  • Implementing Cross Cutting Concerns – Tracing and Logging Using Gateway

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    Cross-cutting concerns such as logging and tracing are crucial in microservices architectures to ensure observability and maintainability. Implementing these concerns at the gateway level allows uniform handling of requests and responses before they reach backend services. Implementation We’ll create a package com.learnitweb.gatewayserver.filters and add following classes: FilterUtility.java Key functions: RequestTraceFilter.java ResponseTraceFilter.java The ResponseTraceFilter is a…

  • Instance-Based vs. Model-Based Learning

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    Introduction Machine learning algorithms can be broadly categorized into Instance-Based Learning and Model-Based Learning. Understanding these approaches is crucial for selecting the right algorithm for a given task. This tutorial explores the fundamental differences between these two paradigms, their advantages, and real-world use cases. Instance-Based Learning: These algorithms memorize the training data. When a new…

  • Implementing Custom Routing Using Spring Cloud Gateway

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    Spring Cloud Gateway provides developers with the flexibility to customize and define their own routing configurations. In this tutorial, we’ll see how to do that. Configuring RouteLocator Now, let’s define a custom routing configuration using RouteLocator in a Spring Boot application. Create RouterLocator bean in the application. Explanation of the code Example Routing Behavior Incoming…