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Managing Native Memory in Java: Arenas, Malloc, and Custom Pools

Table of Contents What is the Memory APIArenasUsing ArenasCreating your own arenaNative Memory allocation methodsUsing Malloc and FreePool of reusable memoryWhy you would use themHow to use a memory poolSlicingHow to use themTL;DRConclusion What is the Memory API The Foreign ...

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From Zero to Full Observability with Dash0

Table of Contents Before: A Service with No ObservabilityPart 1: Build the ApplicationPart 2: Containerize and PublishPart 3: Deploy to KubernetesPart 4: Generate Traffic (the Before State)After: Adding Observability with the Dash0 OperatorPart 5: Install the Dash0 OperatorPart 6: Configure …

Introducing Floci: A High-Performance, GraalVM-Powered AWS Emulator

Table of Contents The Motivation: Why Another AWS Emulator?Technical Edge: Built with Java and GraalVMFeature CoverageGetting StartedJoin the Floci Community The Motivation: Why Another AWS Emulator? As Java developers, we are used to local-first development. Tools that emulate the cloud …

Does Java Really Use Too Much Memory? Let’s Look at the Facts (JEPs)

Table of Contents The reputation didn’t come out of nowhere.Modern Java: What Actually Changed?1. Garbage Collection Is Not What It Used to Be2. Threads Got Lighter (Much Lighter)3. Java Objects Are Literally Getting Smaller4. The JVM Learned to Share (CDS)5. …

Java Faceted Full-Text Search API Using MongoDB Atlas Search

Table of Contents Let’s build!Prerequisites1. Project setup2. COCO dataData modelRunning MongoDB AtlasData ingest into MongoDB AtlasCreating an Atlas Search indexExample search3. Java service implementation4. Java searchPagingFilter clausesFacetsSearch(Optional) Refactoring to a better structureWrapping up This is going to be a fun, …

Oracle’s Java Verified Portfolio and JavaFX: What It Actually Means

Table of Contents Who Kept JavaFX Alive?OpenJFX Inspired Project SkaraWhat the JVP Actually ChangesJavaFX and the AI Visualization AngleA Note on the Community and Commercial DynamicsWhere Things Stand Oracle’s JavaOne 2026 brought an announcement that caught some attention in the …

Grails Isn’t Done Yet (Part 2): EOL, Spring Boot, and What Comes Next

Table of Contents The inflexion pointWhere Grails versions stand todayThe Spring Boot gravitational pullWhat the risk actually looks likeThe practical middle groundUpgrade is an action, not a strategySummaryResources In the companion article to this one, I looked at the revitalisation …

Popular today Does Java Really Use Too Much Memory? Let’s Look at the Facts (JEPs)
Table of Contents The reputation didn’t come out of nowhere.Modern Java: What Actually Changed?1. Garbage Collection Is Not What It Used to Be2. Threads Got Lighter (Much Lighter)3. Java Objects Are Literally Getting Smaller4. The JVM Learned to Share (CDS)5. ...
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Atlas Search Score Breakdown

Table of Contents Relevancy riddleScore detailsLucene insideLucene indexingLucene scoringBest matchesBreaking down the score detailsPretty printing the score detailsMystery solved!Compound is kingBoosting clausesRelevancy tuning: a delicate balance Full-text search powers all of our digital lives — googling for this and that; …

JavaFX Links of March 2026

Table of Contents CoreApplicationsComponents, Libraries, ToolsPodcasts, Videos, BooksMiscellaneousJFX Central Here are the JavaFX LinksOfTheMonth of March 2026. You can find the weekly lists on jfx-central.com. Did we miss anything? Is there anything you want to have included in one of …

🤖 5 Best Practices for Working with AI Agents, Subagents, Skills and MCP

Table of Contents §0 📖 Where This Fits in the Series§1 🏗️ The Naive Architecture — and Why It Breaks§2 ✅ The Better Architecture — Multi-Agent with MCP§3 📉 Before You Build: The Productivity Reality Check§3b 📐 Requirements First — …

The Java in Education Catalog Now Has a Beautiful Home

Table of Contents Inspired by a Great Idea from James WardMeet education.foojay.socialThe Catalog Is Only as Good as the Community Makes ItWhat’s Next A few weeks ago, Igor De Souza shared Bringing Java Closer to Education: A Community-Driven Initiative here …

Modeling One-to-Many Relationships in Java with MongoDB

Table of Contents What You’ll LearnPrerequisitesProject SetupConfiguring the MongoClient with POJO SupportWhat Is a One-to-Many Relationship in Java?How Does MongoDB Store Documents Differently Than a Relational Database?Pattern 1: Embedded DocumentsWhen Should You Embed?Modeling Embedded Documents in JavaInserting and Querying Embedded …

SpringBoot Actuator Health for Microprofile Developers
Spring Boot Actuator Health for MicroProfile Developers

Table of Contents The Conceptual BridgeThe Conceptual BridgeEndpoint MappingWriting Health ChecksWriting Health ChecksAuto-Configured Health IndicatorsResponse Format and Status CodesSecurity ConsiderationsActuator’s Extended CapabilitiesPractical Migration TipsConclusions If you worked with MicroProfile Health, you already understand the value of exposing application health information …

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