Inside Java
News and views from members of the Java team at Oracle
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2026
- Making Arena.ofConfined() Even Cheaper in JDK 28
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Agent Helidon: License to Scale
- Faster Post-Quantum Cryptography with JDK Intrinsics
- Performance Improvements in JDK 27
- The Limitations of Running a Workload Generator In the Same JVM as the System-Under-Test
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Just-In-Time Compilation for Java Performance: Recent and Ongoing Improvements
- Episode 70 “AOT Caching - Netflix' Practice vs OpenJDK's Theory” [I/O]
- JDK 27 Runtime Updates Release Notes
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Principles of Memory Management in Java
- Acceleration of Curve25519 Field Operations with Java Software and Intrinsics
- Episode 64 “JIT Compiler From the Ground Up” [AtA]
- Can Java Microservices Be As Fast As Go? A 2026 Benchmark Update
- Performance Improvements in JDK 26
- Episode 59 “Java *is* Memory Efficient” [AtA]
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Java AOT in Production at Netflix
- Secure, Scalable JVM Diagnostics for Kubernetes with JMS
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Java Performance Update: From JDK 21 to JDK 25
- Java 26 for DevOps
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1B Rows with the Memory API - JEP Cafe #25
- One Giant Leap: 95% Less Sampling Cost
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The Static Dynamic JVM – A Many Layered Dive #JVMLS
- Run Into the New Year with Java’s Ahead-of-Time Cache Optimizations
2025
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Supercharge your JVM Performance with Project Leyden and Spring Boot
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Assembling Project Leyden #JVMLS
- Performance Improvements in JDK 25
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From JDK 21 to JDK 25 - Java Performance Update 2025
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Java 21 ⮕ 25: Performance and Runtime Enhancements #RoadTo25
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Auto-Vectorization in HotSpot #JVMLS
- Just Be Lazy
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ZGC - Paving the GC On-Ramp
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Project Leyden's AOT - Shifting Java Startup into High Gear
- FFM vs. Unsafe. Safety (Sometimes) Has a Cost
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Java 24, Faster Than Ever
- Strings Just Got Faster
- New Write Barriers for G1
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Java 24 Release Notes Overview for Operations
- Performance Improvements in JDK 24
- A Deep Dive into JVM Start-up
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Java Performance Update
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A Deep Dive into JVM Start Up - Stack Walker #6
2024
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Java 24 Performance Improvements and Deprecations - Inside Java Newscast #82
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Java 24 Stops Pinning Virtual Threads (Almost) - Inside Java Newscast #80
- JEP targeted to JDK 24: 450: Compact Object Headers (Experimental)
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A Sneak Peek at StableValue and SegmentMapper
- Advancing AI by Accelerating Java on Parallel Architectures
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Java Performance Update with Per-Ake Minborg - Live Q&A at Devoxx BE
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Best of Java Performance - Inside Java Newscast #75
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Rethinking Java String Concatenation #JVMLS
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How to Build Custom Java Runtimes with Jlink
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Introduction to JDK Mission Control
- What's New in JMC 9? - Sip of Java
- Pruning Dead Exception Handlers
- JDK 22 G1/Parallel/Serial GC changes
2023
- JDK 21: The GCs keep getting better
- Hazelcast Jet on Generational ZGC
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Reducing P99 Latencies with Generational ZGC
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Where the JVM is Entering the Era of AI Performance Tuning!
- Generational ZGC - Sip of Java
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With Java 21, Your Code Runs Even Faster but How is that Possible?
- JFR View Command - Sip of Java
- Java Records are "Trusted" and Consequently Faster
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Java 21 JVM and GC Improvements #RoadTo21
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Java's Startup Booster: CDS - Stack Walker #3
- Create a multi-platform container image with Java SE Subscription Enterprise Performance Pack
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A Glance At The Java Performance Toolbox
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Save 10-20% Memory With Compact Headers - Inside Java Newscast #48
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Write performant Java code with the Vector API - JEP Café 18
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The Holy Grail of Java Performance - Inside Java Newscast #43
- JDK 21 - Image Performance Improvements
- JDK 21 - Performance Improvements Revealed
2022
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GraalVM in OpenJDK and More JavaOne Announcements - Inside Java Newscast #36
- Pre-Allocated Methods for HashMap and HashSet - Sip of Java
- AppCDS Autogenerate - Sip of Java
- The Serial Garbage Collector - Sip of Java
- The Parallel Garbage Collector - Sip of Java
- Runtimes Updates Post-JDK 11 - Sip of Java
2021
- Client Applications Configuration with Oracle JDK 11+
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String Concatenation - JEP Café #7
- GC progress from JDK 8 to JDK 17
- Improving Java Performance on OCI Ampere A1 Compute instances
- Faster Charset Encoding
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G1: To Infinity and Beyond
- Large pages and Java
- Multi-Tier Compilation in GraalVM
- Faster Charset Decoding
- Reducing MD5 (and SHA) overheads
- Extending the Automatic Vectorization Capabilities of the C2 Compiler
- Investigating MD5 overheads
2020
- Towards OpenJDK 17
- Zip lookups - a word from the sponsor
- Improving G1 out-of-the-box performance
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Heap Archiving
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G1: To infinity and beyond
2019
- OpenJDK Startup - Late 2019 Edition
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GraalVM-Native Images: The Best Startup Solution for Your Applications
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Maximizing Performance with GraalVM
- Updates on Class Initialization in GraalVM Native Image Generation
- Improving performance of GraalVM native images with profile-guided optimizations
- libgraal: GraalVM compiler as a precompiled GraalVM native image
- String concatenation, redux
- cljinit woes
