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Java News Roundup: OpenJDK JEP Updates, Spring AI, Quarkus, LangChain4j, JReleaser, WildFly

This Java roundup features updates on several JEPs targeting JDK 25, including Compact Source Files and Instance Main Methods, Module Import Declarations, Flexible Constructor Bodies, and Structured Concurrency.
The eighth milestone release of Spring AI 1.0.0 introduces significant changes leading up to the upcoming RC1 release, focusing on providing deprecated API and corresponding replacement APIs.
Quarkus 3.22.0 introduces new features like Compose Dev Services for Quarkus applications and an improved test class loading infrastructure.
The first release candidate of LangChain4j 1.0.0 offers five modules under release candidate status, with breaking changes such as interface renaming and reshuffling.
JReleaser 1.18.0 is released with new features like support for Forgejo, FLAT_BINARY distributions, and deployment to Sonatype Nexus 3 repository manager.
WildFly recently joined the Commonhaus Foundation, a non-profit organization aiming to support the sustainability of open source projects including WildFly, Infinispan, Debezium, and others.
JDK 25's build 21 early-access build includes various bug fixes, and developers are encouraged to report bugs via the Java Bug Database for further improvements.
Spring Cloud 2025.0.0's first release candidate, Northfields, includes bug fixes and updates to sub-projects like Spring Cloud Kubernetes and Spring Cloud Stream.
JEP 517 elevates HTTP/3 support for the HTTP Client API to Candidate status, proposing compatibility with the HTTP/3 protocol for easier interaction with HTTP/3 servers.
JEP 515 elevates Ahead-of-Time Method Profiling to Candidate status, aiming to enhance application warmup time by making method-execution profiles instantly available to the HotSpot JVM upon startup.
JEP 470's PEM Encodings of Cryptographic Objects moves to Candidate status, previewing an API for encoding cryptographic objects into the PEM transport format, allowing seamless conversions between PEM text and cryptographic objects.

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Medium

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How to Talk to a Product Manager So You Build a Product — Not Just Tasks

Developers in a Product-First mindset should focus on solving user problems, not just completing tasks.
Building a bridge between product managers and developers through asking key questions can lead to more effective solutions.
Key questions to ask include understanding the purpose, user pain points, success metrics, solution confirmation, and potential simplifications.
By actively engaging in conversations and suggesting solutions, developers can have a greater impact on the product development process.

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226

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Enhancing the Python ecosystem with type checking and free threading

Meta and Quantsight have improved key libraries in the Python Ecosystem and invite community involvement.
Efforts are focused on unlocking performance wins through free-threaded Python and improving type annotations.
Type hints in Python enhance code understanding and IDE functionality.
The inconsistency in specifying and maintaining type annotations in open source projects is being addressed.
Improvements in type coverage have been made for pandas-stubs and numpy.
Key introductions include new type aliases and improvements in core Dataframe operations.
Free-threaded Python allows true parallelism and improved performance.
The benefits include utilizing multi-core processors without the need for multiple processes.
The ecosystem is being prepared for free-threaded Python compatibility by enhancing popular packages.
Community involvement is crucial in further improving type annotations and free-threading in Python libraries.

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Medium

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Vouched API Announces Strategic Partnerships with Lendflow, Trident3, and LendAPI Under the…

Vouched API announces strategic partnerships with Lendflow, Trident3, and LendAPI to enhance identity verification processes in the fintech industry.
Partnerships with Lendflow, Trident3, and LendAPI aim to streamline onboarding processes, reduce fraud, and improve user experiences by integrating Vouched's identity verification API.
Tom Donlea, Vice President of Business Development at Vouched, plays a key role in aligning Vouched's capabilities with the specific needs of the partners to enhance trust and safety in identity verification.
Vouched provides AI-driven identity verification services for businesses to ensure compliance, reduce fraud, and enhance trust and safety in digital interactions across various industries.

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Byte Byte Go

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How Canva Collects 25 Billion Events a Day

Canva collects 25 billion events daily, translating user actions into events for analysis, emphasizing plumbing over dashboards.
Canva's schema governance, batch compression, and router architecture help manage the flow of events efficiently.
The analytics pipeline at Canva is structured into three core stages: Structure, Collect, and Distribute.
Canva maintains strict Protobuf schemas for all events, ensuring forward and backward compatibility, with Datumgen enforcing schema rules.
Ingestion at Canva is streamlined with a unified client and AWS Kinesis-backed pipeline for asynchronous enrichment and ingestion buffering.
Canva's ingestion endpoint validates events against schemas, enriches data, and forwards it to downstream consumers via Kinesis streams.
Decoupled routing in Canva's pipeline ensures events are delivered efficiently to different destinations like Snowflake, Kinesis, and SQS Queues.
Infrastructure cost optimization at Canva includes transitioning to Kinesis for cost reduction, batch compression for savings, and using SQS as a fallback.
Canva's pipeline aligns fundamentals like strict schemas, smart batching, and decoupled services to handle billions of events reliably and cost-effectively.
Building for reliability, cost efficiency, and long-term clarity is highlighted as the key lesson for scaling analytics effectively.
Canva's approach demonstrates the importance of balancing simplicity and flexibility in designing systems for high-scale event collection and analysis.

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Changelly

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14 Web3 Use Cases Your Business Can’t Ignore in 2025

Web3 use cases are expanding beyond crypto startups to industries like logistics, finance, education, and healthcare, offering decentralized solutions to real-world challenges.
In 2025, Web3 technologies are essential for businesses, improving transparency, reducing costs, and enabling efficient global transactions.
Decentralized Finance (DeFi) reshapes financial services by removing intermediaries, offering peer-to-peer lending, yield farming, and decentralized exchanges like Uniswap.
Tokenization of assets, including real estate and intellectual property, allows fractional ownership and increased liquidity through blockchain-based tokens.
Decentralized Identity (DID) solutions enhance privacy and security by giving individuals control over their personal data, contributing to the rise of Self-Sovereign Identity (SSI).
Web3 impacts supply chain transparency, logistics, and healthcare, ensuring traceability, automating processes, and protecting sensitive information with blockchain solutions.
Decentralized Autonomous Organizations (DAOs) enable community governance and decision-making without centralized control, fostering transparency and accountability.
Smart contracts streamline business operations by automating tasks and triggering actions based on predefined conditions, reducing errors and promoting efficiency.
Web3 revolutionizes social media, content monetization, NFTs, and gaming by empowering creators, eliminating intermediaries, and offering new ways to engage and monetize digital content.
Decentralized storage solutions enhance data security, privacy, and availability by leveraging blockchain-based platforms like IPFS and Filecoin for secure, censorship-resistant storage.
Web3 applications in education, energy, IoT, and autonomous systems offer innovative solutions for enhancing collaboration, security, and data management across various sectors.

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Popsci

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New nuclear fusion reactor’s electromagnet could lift 10 monster trucks

The world’s largest and most powerful superconducting electromagnet is set to be installed in a tokamak nuclear fusion reactor at the International Thermonuclear Experimental Reactor (ITER) facility in southern France.
The tokamak reactor at ITER aims to demonstrate the commercial viability of nuclear fusion as a clean energy source by generating 500 megawatts of fusion power from minimal input heating.
The Central Solenoid magnet system at ITER, weighing nearly 3,000 tons, is strong enough to lift a 112,000-pound aircraft carrier or approximately 10 monster trucks.
Despite delays, ITER's start-up phase for generating plasma is expected around 2033, emphasizing the global collaboration and potential of fusion energy for a sustainable future.

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Tech Radar

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I asked ChatGPT, Gemini, and other AIs how to combat aging, and only one did the right thing

The inevitability of aging prompts people to turn to technology for solutions, with AI playing a significant role.
Multi-millionaire Bryan Johnson is associating AI with his quest for longevity, envisioning a new 'Don't Die' religion.
Johnson believes AI could revolutionize how we approach longevity, impacting both healthcare and religious perspectives.
Investing in his own longevity, Johnson is feeding his body data into an algorithm to potentially surpass traditional healthcare.
Various AI platforms like ChatGPT, Copilot, and Gemini provide advice on combating aging and maintaining youthfulness.
ChatGPT suggests staying active, eating well, and maintaining a positive mindset, while Copilot emphasizes aging gracefully through physical and mental well-being.
Anthropic's Claude AI offers evidence-based strategies including dietary, exercise, sleep, stress management, and social engagements to combat aging.
Gemini, among other AI chatbots, stresses the importance of professional medical consultation alongside AI advice for healthy aging.
While AI can provide valuable guidance, it is crucial to consult healthcare professionals and not solely rely on AI recommendations for health decisions.
As AI continues to advance in healthcare, consulting with doctors remains integral to ensure personalized and accurate guidance for individual health needs.
Ultimately, while AI can offer insights, the expertise of healthcare professionals should be prioritized for optimal health decisions and personalized care.

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Javacodegeeks

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How to Return PDF Files from a Micronaut Endpoint

Micronaut is a JVM-based framework for building microservices, and returning a PDF from a REST API endpoint is a common need in business applications.
Micronaut uses compile-time annotation processing, reducing memory usage and startup time compared to traditional Java frameworks like Spring.
Key features of Micronaut include compile-time dependency injection, fast startup time, integration with GraalVM, reactive support, built-in HTTP server/client, and cloud-native readiness.
To return a PDF in Micronaut, dependencies like micronaut-http-server-netty and OpenPDF library need to be added to the project.
A PdfService class is used to generate the PDF content in memory using OpenPDF library, and a PdfController class handles the REST endpoint for returning the PDF.
The PdfController method calls pdfService.generatePdf() to get the PDF content as a byte array and constructs an HTTP response with the PDF content, content type, and download header.
By structuring the PDF generation logic in a service class, the codebase becomes cleaner and more maintainable in Micronaut applications.
Using OpenPDF for PDF generation in Micronaut allows for working with an open-source and LGPL-licensed library suitable for various commercial applications.
This approach provides a foundation for building advanced PDF workflows with tables, images, dynamic data, and charts in Micronaut-based applications.
The integration of OpenPDF for PDF generation and delivery in Micronaut allows for streamlined and efficient handling of PDF content.

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Scand

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Prompt Engineering Management System (PEMS): Optimizing Corporate AI Workflows

The rise of AI and machine learning programs like ChatGPT has revolutionized various industries with around one billion users utilizing them for tasks like content creation and debugging.
However, the quality and structure of prompts used in these AI tools are crucial for successful outcomes, leading to the emergence of Prompt Engineering Management Systems (PEMS).
PEMS focuses on composing appropriate inputs for Large Language Models (LLMs) to generate desired outputs, ensuring the effectiveness of AI responses.
Improper prompts can result in incorrect responses, regulatory risks, increased token usage, and unpredictable behavior.
The global prompt engineering market is expected to grow significantly from 2024 to 2030, highlighting the importance of prompt management in AI workflows.
Challenges in prompt management include scattered storage, lack of version control, inconsistent tone, duplicate efforts, no testing process, and security risks.
A PEMS serves as a centralized tool for saving, testing, and improving AI prompts, ensuring high-quality inputs and standardized practices across teams.
Key features of PEMS include a centralized repository, version control, standardized templates, probing and validation capabilities, access control, and collaboration tools.
PEMS streamlines prompt quality and consistency by enabling testing, version tracking, collaboration, and feedback integration, ultimately enhancing AI performance.
Use cases for PEMS include applications in customer support chatbots, internal knowledge assistants, content creation, code generation, data analysis, and training/onboarding processes.

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Infoq

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Instance Main Methods Move from Preview to Final in JDK 25

JEP 512, Compact Source Files and Instance Main Methods, has been integrated for JDK 25 after a four-round preview cycle starting from JDK 21.
This evolution introduces features like Compact Source Files, flexible instance main methods, java.lang.IO class, and automatic imports for core libraries to simplify Java programming.
Instance main methods allow for non-static entry points, making it easier for beginners to write Java programs without the need for explicit class declarations.
The finalization of these features aims to reduce the learning curve and streamline small program development in Java, maintaining compatibility and integration with the standard Java toolchain.

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Cinema5D

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Blackmagic Camera 9.5.1 Firmware Update Brings Improvements to URSA Cine Cameras

Blackmagic Design has released Camera Update 9.5.1, bringing improvements to the URSA Cine line.
The update includes optimizations for the URSA Cine 17K 65 camera and enhancements for the full URSA Cine range.
Changes include improved image performance for 65mm open gate recording modes, better clip playback behavior, and enhanced focus scale readouts for cine-style lenses.
Blackmagic Camera 9.5.1 is available as a free download, and users are advised to review compatibility and release notes before updating.

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Knowridge

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This tiny filter could revolutionize electric vehicle materials

Researchers at The University of Texas at Austin have developed a cleaner and more efficient way to extract rare earth elements used in electric vehicles and advanced technologies.
They created artificial membrane channels inspired by proteins in our bodies, which selectively allow certain rare earth elements like europium and terbium to pass through while blocking common ions.
These channels showed a strong preference for middle rare earth elements and could potentially reduce the dependence on imported materials for green technologies.
The technology has the potential to be scaled up for industrial use and may also be adapted to extract other important minerals like lithium, cobalt, and nickel.

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TheNewsCrypto

ECB Selects COTI as Pioneer Partner for CBDC Digital Euro Project

COTI has been chosen as a Pioneer Partner by the ECB for the CBDC Digital Euro Project, highlighting its technology's recognition in the CBDC space.
As a Pioneer Partner, COTI will test its conditional payment privacy solution on simulated ECB infrastructure to ensure private user data protection in the CBDC system.
The ECB's initiative aims to explore technologies for a potential Digital Euro and COTI will collaborate with the ECB and other partners to provide solutions applicable across the euro area.
COTI's innovative cryptographic protocol Garbled Circuits positions it as a key player in web3 innovation, offering data security solutions for various sectors like DeFAI, RWAs, Security, and Identity.

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CSS-Tricks

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Modern Scroll Shadows Using Scroll-Driven Animations

Scroll shadows are a UX design technique that can be implemented using CSS animations tied to scroll position.
Different approaches like using background gradients with animations, animation-timeline, and CSS masks have been explored for creating scroll shadows.
One method involves using a CSS mask to fade out the edges of a scrollable element, which works well for horizontally scrollable content.
By combining custom properties, keyframes animations, and animation-timelines in CSS, scroll-driven visual effects like fading edges can be created without the need for JavaScript.

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