Implementing Multi-Tenant Security with Spring Boot and Spring Security

Multi-tenancy is a software architecture where a single application instance serves multiple tenants (clients), each with its own data and…

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Running Java Apps on AWS Lambda with SnapStart: Is It Production-Ready Yet?

Running Java applications on AWS Lambda has always faced one major challenge: cold starts. Especially when using Spring Boot, startup…

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HATEOAS + Spring Security: Why Some Links Are Missing for Certain Roles

ATEOAS (Hypermedia As The Engine Of Application State) is a core constraint of REST application architecture that makes REST APIs…

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Spring Boot HashiCorp Vault Reload SSL Certificates Example

1. Overview In modern microservices architectures, managing SSL certificates securely and efficiently is critical. This guide explains how to use…

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Migrating from Spring HATEOAS 1.x to 2.x: Common Pitfalls and How to Avoid Them

Upgrading from Spring HATEOAS 1.x to 2.x introduces significant changes that can impact your application if not handled carefully. This…

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Why @EnableHypermediaSupport Breaks Some Auto-Configurations in Spring Boot

Spring Boot‘s auto-configuration mechanism simplifies application setup by automatically configuring beans based on classpath settings, other beans, and various property…

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Understanding Why @Relation Annotations Sometimes Ignore Collection Names in Spring HATEOAS

In Spring HATEOAS, the @Relation annotation is instrumental in customizing the names of individual resources and their collections within hypermedia…

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WireMock with Spring Boot Example

1. Introduction WireMock is a powerful HTTP mock server that stubs and verifies HTTP requests. It provides a controlled test…

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Chaos Engineering for Java: Testing Spring Boot Resilience with Gremlin & Litmus

Modern distributed systems must withstand failures—network delays, crashes, and infrastructure outages. Chaos Engineering proactively tests system resilience by injecting controlled failures in…

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