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JC-AI Newsletter #6

Fourteen days have passed, and it is time to present a fresh collection of readings that could influence developments in the field of artificial intelligence. Beyond opinion pieces and Java focused tutorials that can enhance your understanding of AI applications, ...

New Articles

The Cost of Not Knowing MongoDB – Part 2 (appV5R0 to appV5R4)

Table of Contents Application Version 5 Revision 0 and Revision 1 (appV5R0 and appV5R1): A simple way to use the Bucket PatternSchemaBulk upsertGet reportsIndexesScenarioLoad tests resultsIssues and improvementsApplication Version 5 Revision 2 (appV5R2): Using the Bucket Pattern with the Computed …

Transactions and ThreadLocal in Spring

Table of Contents Finding usage of ThreadLocalThe TransactionSynchronizationManager classHow transactions use TransactionSynchronizationManagerWhat about Reactive transaction management?Discussion Two years ago, my friend José Paumard held the talk “Concurrent and Asynchronous Programming : Loom” at the Geneva Java User Group. In his …

Foojay Podcast #80: AI4Devs Interviews – Part 2

Table of Contents VideoPodcast (Audio only)Content This is part 2 of the interviews recorded on September 19th, 2025, at the first AI4Devs conference in Amsterdam. In Part 1, we explored many AI-related topics as libraries, security, infrastructure, use cases, and …

Beyond Keywords: Implementing Semantic Search in Java With Spring Data (Part 1)

Table of Contents The magic behind vector searchPrerequisitesEmbeddings with Voyage AIPreparing the datasetMongoDB Atlas Vector Search (index and retrieval)Building the movie search appConfiguring the applicationThe document modelWire the request DTOCommunicating with Voyage AIThe EmbeddingServiceQuerying with Spring Data Vector Search operationThe …

How Chat Memory Manipulation Can Ruin Your AI System

Table of Contents Do LLMs have any conversational memory?Implementing chat memory in your AI appChat messages with Java’s Langchain4JLLM chat memory injectionChat memory injection: Proof of conceptPreventing chat memory manipulation is key Do LLMs have any conversational memory? With the …

7 Habits of Highly Effective Java Coding

Table of Contents From AI User to AI Pro1. The Golden Rule: Take Pride and Ownership in Your Craft 🥇2. Feed the Beast: Your Project’s Context is its Fuel ⛽3. Dodge the “Ball of Mud”: Keep Your Code Maintainable 🧠4. …

Performance
Popular today Here’s Java 25, Ready to Perform to the Limit
Table of Contents JEP OverviewNew featuresCore LibsHotSpotSecurity LibsJava Flight RecorderRepreviews and FinalizationsJEP 505: Structured Concurrency (Fifth Preview)JEP 506: Scoped ValuesJEP 507: Primitive Types in Patterns, instanceof, and switch (Third Preview)JEP 508: Vector API (Tenth Incubator)JEP 510: Key Derivation Function APIJEP ...
The Cost of Not Knowing MongoDB – Part 1: appV0 to appV4

Table of Contents The application: finding fraudulent behavior in transactionsThe load testInitial scenario and data generatorThe instances configurationApplication Version 1 (appV1)SchemaBulk upsertGet reportsIndexesInitial scenario statsLoad test resultsIssues and improvementsApplication Version 2 (appV2)SchemaBulk upsertGet reportsIndexesInitial scenario statsLoad tests resultsIssues and improvementsApplication …

JC-AI Newsletter #7

Fourteen days have passed, and it is time to present a fresh collection of readings that could influence developments in the field of artificial intelligence. Beyond focused tutorials that can enhance your understanding of AI applications, this newsletter concentrates on …

What Happens When 10,000 JVMs Collaborate in One Production Environment

Table of Contents Limitations of OpenJDK How Azul Platform Prime removes the limits of traditional JVMs A large global enterprise achieved a performance and efficiency milestone, running 10,000 Java Virtual Machines (JVMs) that collaborate and share optimizations with one another, using …

BoxLang v1.6.0 – Performance, AI-Powered Docs, and Advanced Async Monitoring

Table of Contents 🚀 What’s New in 1.6.0? We’re thrilled to announce BoxLang 1.6.0, a release that delivers massive performance improvements, intelligent developer tooling, and enhanced async capabilities. This release focuses on making BoxLang faster, smarter, and more observable than …

Keywords Meet Vectors: Hybrid Search on MongoDB

Table of Contents What is hybrid search?How does it work in MongoDB?Why movies collection are the perfect demoInspecting the anchor documentSanity checksStep 1: Prepare the query vectorStep 2: Run semantic searchStep 3: Apply hybrid scoringStep 4: Hybrid ranking with Reciprocal …

Working with Geo Location Data

MongoDB makes it really easy to work with location data (sometimes called Geo Data) by simplifying how to store this type of data and streamlining how you query for it so you can easily create “find nearby” queries, or plot …

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