NLJUG – Nederlandse Java User Group NLJUG – de Nederlandse Java User Group – is opgericht in 2003. De NLJUG verenigt software ontwikkelaars, architecten, ICT managers, studenten, new media developers en haar businesspartners met algemene interesse in alle aspecten van Java Technology.
Author: Frank Delporte Original post on Foojay: Read More Table of Contents How ReadyNow achieves faster compilationsNormal startupWhat’s in the fileStartup with fileComparing the different runs Tier 1 compile counts Tier 2 Compile Counts Compiler queue run Conclusion This is the second blog post in a series on faster Java application warmup. The first blog post, Faster Java Warmup: CRaC …
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Java Concurrency Best Practices for MongoDB
Author: Vivekanandan Sakthivelu Original post on Foojay: Read More Table of Contents Lost updatesDirty readsNon-repeatable readsPhantom readsHow to avoid these issues Isolation Read concern Write concern In a multi-threaded, distributed environment like MongoDB, when clients execute queries concurrently, operations interleave with one another if they are not isolated, whether those operations involve single-document or multi-document operations. For instance, Client C1’s …
Read More »Performance Best Practise No. 1: Optimize Database Operations
Author: Ondro Mihalyi Original post on Foojay: Read More Table of Contents How GlassFish helps with improving database performance Connection pool configuration JDBC batching Jakarta Persistence (JPA) batching Next Steps Database operations are a very critical part of most applications in regards of performance. There are multiple reasons why database operations can significantly contribute to lower performance: The database often …
Read More »Intro to RAG: Foundations of Retrieval Augmented Generation, part 2
Author: Jennifer Reif Original post on Foojay: Read More Table of Contents GenAI systems as layersVector RAGGraph RAGAI AgentsModel Context Protocol (MCP)What should you choose?Wrapping up!Resources In the last post, we discussed the basics of Retrieval Augmented Generation (RAG) and how it enhances the capabilities of Large Language Models (LLMs) by integrating them with external knowledge sources. We also introduced …
Read More »Authoring an OpenRewrite Recipe
Author: Nicolas Frankel Original post on Foojay: Read More Table of Contents My use caseRecipe basicsPutting it all togetherTesting the recipePotential future worksConclusion I’ve been eying OpenRewrite for some time, but I haven’t had time to play with it yet. In case you never heard about OpenRewrite, OpenRewrite takes care of refactoring your codebase to newer language, framework, and paradigm …
Read More »Faster Java Warmup: CRaC versus ReadyNow
Author: Frank Delporte Original post on Foojay: Read More Table of Contents What happens at Java startup Java warmup phase Deoptimizations Solutions Provided by Azul Coordinated Restore at Checkpoint (CRaC) ReadyNow Cloud Native Compiler CRaC Compared to ReadyNow Conclusion This is the first blog post in a series on faster Java application warmup with ReadyNow.Azul has developed different solutions to help …
Read More »MongoDB Aggregation Framework: A Beginner’s Guide
Author: Tim Kelly Original post on Foojay: Read More Table of Contents Aggregation pipelineAggregation stages $Match $Project $Unwind $Group $Sort $AddFields Combining stagesWrapping up Finding exactly the data we need isn’t always a simple task. You’ve probably faced situations where you needed to filter information, group it, and even perform calculations to produce a final result. And often, delivering this …
Read More »Java’s Structured Concurrency: Finally Finding Its Footing
Author: A N M Bazlur Rahman Original post on Foojay: Read More Table of Contents What Actually Changed This Time The Core Concept Remains Strong The headline change: static factory methods Joiners: pick your success policy Rolling your own Joiner Better cancellation and deadlines Scoped values ride along Guard-rails against misuse Observability improvements Some more examples to try out Final …
Read More »Cloudflare Tunnel for Home Assistant
Author: Nicolas Frankel Original post on Foojay: Read More Table of Contents The initial setupCloudflare Tunnel for Home AssistantRemoving Let’s Encrypt add-onConclusion I continue to take care of my Home Assistant. This week, I replaced my original setup with Cloudflare Tunnel. This is the 6th post in the My journey with Home Assistant focus series. Other posts include: Why Home …
Read More »Foojay Podcast #72: JCon Report, Part 1 – Grow your career, public speaking, 30 years of Java, greener coding,…
Author: Frank Delporte Original post on Foojay: Read More Table of Contents VideoPodcast (Audio only)Content On May 13th and 14th, Foojay attended the JCON conference in Köln, Germany, where we did over 30 live-stream interviews. In this episode, we present to you the first set of these interviews, in which we focus on celebrating 30 years of Java, how you …
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