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Java Articles by Foojay.io

September, 2025

  • 17 September

    Azul’s High-Performance Java Platform Achieves Historic First with 10,000 Customer JVMs Collaborating and Sharing Performance Optimizations, Cutting Cloud Costs by 20%+

    Author: John Ceccarelli Original post on Foojay: Read More Azul Platform Prime Achieves Historic First with 10,000+ JVMs Collaborating and Sharing Performance Optimizations, Cutting Cloud Costs by More than 20% Fleet-level advantages achieved for cloud-native Java applications with faster warm-up, smoother scaling and reduced cost SUNNYVALE, Calif. — September 17, 2025 — Azul, the only company 100% focused on Java, …

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  • 16 September

    Best Practices for Deploying MongoDB in Kubernetes

    Author: Tim Kelly Original post on Foojay: Read More Table of Contents 1. Use the MongoDB Kubernetes Operator2. StatefulSets and persistent volumes: Running MongoDB the right way Example: Recommended multiple volume configuration 3. Set CPU and memory resources for MongoDB and the Operator MongoDB Kubernetes Operator: Plan for initial spikes MongoDB replica set pods: Allocate predictably 4. Spread replica set …

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  • 16 September

    Here’s Java 25, Ready to Perform to the Limit

    Author: Hanno Embregts Original post on Foojay: Read More Table of Contents JEP OverviewNew features Core Libs HotSpot Security Libs Java Flight Recorder Repreviews and Finalizations JEP 505: Structured Concurrency (Fifth Preview) JEP 506: Scoped Values JEP 507: Primitive Types in Patterns, instanceof, and switch (Third Preview) JEP 508: Vector API (Tenth Incubator) JEP 510: Key Derivation Function API JEP …

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  • 15 September

    Research: Measuring Energy Consumption in Programming Languages for AI Applications

    Author: Miro Wengner Original post on Foojay: Read More Decades ago, I contributed to a very interesting project called SunSPOT at SUN Microsystems. It was a small device with wireless connectivity, built-in sensors, running on Java (compatible with runtime 1.6), and powered by battery. It enabled the design of small applications and the connection of additional hardware, or simply the …

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  • 15 September

    Foojay Podcast #78: Welcome to OpenJDK 25!

    Author: Frank Delporte Original post on Foojay: Read More Table of Contents VideoPodcast (Audio Only)GuestsContent We’re excited to present the first episode of the Foojay Podcast’s fifth season, marking the release of OpenJDK 25! For the first time, an OpenJDK release is aligned with the year, and we can welcome release 25 in 2025. As usual in the release podcast, …

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  • 11 September

    MongoDB Schemas in Java

    Author: Luke Thompson Original post on Foojay: Read More Table of Contents Why MongoDB and Java are such good friendsThe missing schema of loosely typed systems Bringing schema back Example: Spring Boot sea temperature service  Sea temperatures  Weather reports  Schemas Tip—BSON IDs and the _id field Traps—record definitions for POJO codec Data access Tip—typed queries with MongoCollection<> generics Trap—pagination and aggregate facets Creating our API Tip—indexing Trap—check your explain plans! Why …

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  • 10 September

    Stochastic AI Agility: Breaking Cycles of Debt

    Author: Miro Wengner Original post on Foojay: Read More The launch of ChatGPT in November 2022 has influenced and perhaps even changed the rules of the game in many areas. Although I personally focus on the IT industry, observations suggest that it is affecting the entire industry, including the lives of ordinary people. The article aims to discuss or address …

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  • 10 September

    JetBrains and Azul Collaborate on Kotlin Performance in Various JVMs

    Author: Jiří Holuša Original post on Foojay: Read More Table of Contents Benchmarking Kotlin performance on Azul Platform Prime What’s next for JetBrains and Azul?  JetBrains and Azul are collaborating on a shared vision of running Kotlin-generated bytecode on a high-performance Java platform to find new ways to enhance runtime performance. Benchmarks of Kotlin performance on Azul Platform Prime have yielded some eye-opening …

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  • 9 September

    Building REST APIs in Java with Spring Boot

    Author: Tim Kelly Original post on Foojay: Read More Table of Contents How can Spring help? Prerequisites Creating our appConnecting our database Our Book model Book repository Our REST controller CreateReadUpdateDeleteAdding DTOs and validation BookRequest BookResponse Updating the controller Testing the API Run the API Create Read Update Delete Conclusion REST has become the default choice for building web services, …

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  • 8 September

    Spec-Driven Development with AI: A New Approach and a Journey into the Past

    Author: Simon Martinelli Original post on Foojay: Read More Table of Contents The Problem with Code-Centric DevelopmentRequirements as the Single Source of Truth The Complete Workflow Everything is Code, Everything is Versioned AI as the Consistency Engine The Structure: Independent EpicsA Real Example: System Use Case SpecificationThe ResultsWhy This Works for Business ApplicationsGetting StartedThe Future of Business Application Development The …

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