Free isn’t free: the infrastructure behind open source has real costs, and it’s time we aligned usage with responsibility. This morning we jointly launch a new blog and open letter on sustainable stewardship. www.sonatype.com/blog/from-ab...

Java 25 / JDK 25: Features since the previous long-term support (LTS) release: openjdk.org/projects/jdk... #Java25 #JDK25 #OpenJDK #Java

SIMD Within a Register: How I Doubled Hash Table Lookup Performance Learned about SWAR the first time in the one-billion row challenge. Nice explanation including benchmarks.

Has anyone tested the Iceberg write support new in DuckDB 1.4.0 yet? I'm using Polaris as a catalog; DuckDB uploads the actual data to my bucket (which is in MinIO), but then tries to commit the metadata on Amazon S3 🤔.

📝 Blogged: "Let's Take a Look at... Lower Java Tail Latencies With ZGC" As #Java 25 got released earlier this week, I took the ZGC garbage collector for a spin, exploring how it lives up to its promise of sub-millisecond GC pause times. 👉 www.morling.dev/blog/lower-j...

Today is the day, Java 25 went GA!

Java 25 / JDK 25: General Availability: mail.openjdk.org/pipermail/jd... Features: openjdk.org/projects/jdk... Downloads: jdk.java.net/25/ #Java25 #JDK25 #OpenJDK #Java

One of the great things about RDBMS: They do event sourcing, so you don't have to.

Let's Take a Look at... JEP 483: Ahead-of-Time Class Loading & Linking! buff.ly/vXDtFq9 #Java #jdk #jep483

"Peeking Inside the SQL Server Transaction Log" Enjoyed reading this post by Vojtech Juranek from the @debezium.bsky.social team, exploring the SQL Server TX log format. A potential alternative to polling SQL Server's CDC tables on the horizon? 👉 lnkd.in/eyKFXqZw debezium.io/blog/2025/09...

Don't be like Kenny--Java 25 is around the corner!

Don't be like Kenny--Java 25 is around the corner!

Seen this series (in progress) @gunnarmorling.dev ? youtu.be/n-YK3B4_xPA?...

Published a new blog post: Replacing a Cache Service with a Database We already use databases, why can't we use them to replace caches as well? Will we ever replace caches entirely with databases? In this post, I will share some ideas, & discuss how we are moving toward this avi.im/blag/2025/db...

Now up on stage at @javazone.bsky.social: @josepaumard.bsky.social on Loom, Amber and other goodness in recent Java versions. 21 and 25 named by him "current and next LTS"--take that, @nipafx.dev ;) To be fair, that Non LTS slide followed. I'm confused 😇.

Arriving on-site for @javazone.bsky.social ! So glad to be back for another year, this time with a lightning talk on the pitfalls around #Postgres replication slots (tomorrow, 9:40 am) and a breakout session about the the outbox pattern (Thursday, 10:20 am). 👉 2025.javazone.no/en/program

New deep dive: Understanding Apache Fluss I spent August reverse-engineering Fluss, Alibaba’s new table storage engine for Flink (partially forked from Kafka). This post covers its architecture, tiering, and how it tackles changelogs & low-latency state. jack-vanlightly.com/blog/2025/9/...

🌴 Back to work after some amazing summer holidays. What have I missed? Any cool data streaming news over the last few weeks I should catch up on?

Join @royvanrijn.com at #YOW25, where he shows how Java can fly in his talk "Pushing Java to the Limits: Processing a Billion Rows in Under 2 Seconds" MEL 4-5 Dec | BNE 8-9 Dec | SYD 11-12 Dec yowcon.com

I keep getting into conversations with engineers where I talk about how desperately I want my database to support materialized views with incremental updates and too often I get a blank stare in response. so I wrote a new post about why you should care! sophiebits.com/2025/08/22/m...

✍️ Blogged: Kafka to Iceberg - Exploring the Options rmoff.net/2025/08/18/k... #dataBS

Kroxylicious 0.15.0 released This is a fast-tracked release to address a key resilience issue: - Improved Bootstrap Resilience: The proxy now defaults to round-robin between brokers in bootstrapServers. - New record encryption 🔒quickstart Check out the full details kroxylicious.io/blog/kroxyli...

Whenever someone shares a performance comparison of programming languages, many folks are surprised to see #Java rank up very high. I think by now it's kinda criminal how underrated Java and the JVM are in circles not familiar with it. This misconception is the biggest challenge for this platform.

High-Performance Autocomplete Search with Quarkus, Panache, and PostgreSQL Power intelligent, real-time search experiences with fast indexing, efficient persistence, and a lean Java backend. buff.ly/BumYADc #Java #Quarkus #Hibernate #PostgreSQL #Autocomplete #pg_trgm

MySQL's New Storage and Execution Engine: DuckDB​ www.linkedin.com/pulse/mysqls...

EDB Engineering Newsletter #9 is now out! This time we're featuring posts on Postgres, distributed systems, benchmarking, AI, and performance engineering from Gunnar Morling, Antithesis/Jepsen, Justin Jaffray, Anthropic, Brendan Gregg, Simon Willison and more. edbeng.substack.com/p/edb-engine...

📣 Kroxylicious 0.14.0 - new AuthN APIs (more to come here) - new metrics for tracking network stalls - Fixing support for encrypting messages over 1mb (we don't judge the messages we proxy...) - Better support for negotiating protocol versions kroxylicious.io/blog/kroxyli...

Quite bummed to miss @devoxx.com this year due to a scheduling conflict. Seeing all the acceptance notes definitely creates FOMO 😵‍💫. Wishing everyone a great event! Hope to be back next year.

Maybe it's me being dense, but wouldn't Rust's `await` be more aptly named `yield`? With my Java hat on, await makes it sound like this is blocking (like Future::get()), whereas it's exactly not that.

IMO we need three major axes for talking about open software: - Open source: anyone can use, modify, redistribute the source code - Open contribution: anyone can help make it better - Open governance: anyone can wield power over what happens to it

I was just re-listening to the Oxide & Friends "Crates We Love" episode where @elizas.website correctly promoted writing "when to use" / "when not to use" docs for your crates! oxide-and-friends.transistor.fm/episodes/cra...

"When not to use Tokio"--Loving this section in the docs of Tokio (tokio.rs/tokio/tutorial), a runtime for building async applications in Rust. There are no silver bullets, and it's vital to understand when a given library or tool adds value, and when it does not.

Gunnar writes really accessible posts on postgres logical replication (from the CDC angle). It only just clicked for me I should go back and read all his posts on the subject since I work on a logical replication product and I could use the primer. www.morling.dev/blog/postgre...

📝 Blogged: "Postgres Replication Slots: Confirmed Flush LSN vs. Restart LSN" Exploring the difference between these two LSNs of PG replication slots, which is a common source for confusion. 👉 www.morling.dev/blog/postgre...

Current status: writing a quick side blog post before writing a quick side blog post before getting back to the one I actually intended to write. Let's see how many frames this stack fits 🤓.

Kinda depressed by the state of HTTP load testing tools right now :/ hey: unmaintained, no good reporting of tail latencies. oha: looked nice, but it seems to create noise on the client side. vegeta: incorrect tail latencies in Histogram output, can't get it to scale beyond 5K qps for some reason.

Question for JFR experts around: is there a tool for extracting parts from a recording file based on timestamps? `jfr disassemble` works based on size / number of chunks, but I'd rather want to be able to say "extract the last 5 minutes", or "extract between 1:30 and 5:00 into the recording", etc.

😱 You see this distribution of response times from running 500 requests/sec against some microservice for 120 sec. What do you do to in order to investigate what's going on?

New data oriented file format just dropped. FastLanes, "like Parquet, but with 40% better compression and 40× faster decoding". 👀 Seems it can exploit correlations between columns and have fully SIMD friendly encodings to help with vectorization. github.com/cwida/FastLa...

I've been a bit out of the loop on JPA/Hibernate: is there a way nowadays to model a uni-directional OneToMany relationship which doesn't do an update of the join column when inserting both sides of the relationship?

✍️ Blogged: Interesting Links - July 2025 👉 Lots of Iceberg this month, plus Kafka, Flink, several interesting papers, and 9x examples of data in action at companies including Peloton, Cloudflare, Datadog, and Stifel 📚 rmoff.net/2025/07/18/i...

Details of Peloton's Data Infrastructure, including Kafka, Hudi, and Debezium hudi.apache.org/blog/2025/07...

I wished Java records would let me add additional (derived) components which are computed by the constructor, without allowing them to be passed in by callers.

📝 Blogged: "Converting Future to CompletableFuture With Java Virtual Threads" Quick write-up on a very nice use case for #Java virtual threads: bridging the gap between legacy Future-based APIs and modern CompletableFuture composition patterns. 👉 www.morling.dev/blog/future-...

Where does reliability begin, and where does it end? In distributed business architectures, the answer is responsibility boundaries. New post: jack-vanlightly.com/blog/2025/7/...

Building a streaming data pipeline? Step one: make sense of the data you’re working with. @rmoff.net walks through how to explore and validate messy real-world data from #ApacheKafka in #ApacheIceberg using Tableflow. Read it now 👉 cnfl.io/4jrtjrD

The part of coding I enjoy the most is when you've got a first working implementation, and then you keep iterating on it to simplify the solution, remove unnecessary complexities, find the right abstractions. All while running tests continuously, assuring it still does what it is supposed to do.

It is a common misconception that Apche Parquet files are restricted to basic statistics. Footer metadata and offset-based addressing permit user-defined index structures today. @apachedatafusion.bsky.social blog from Qi Zhi, Jigao Luo and myself explains how datafusion.apache.org/blog/2025/07...

The AssertJ Recursive Comparison might be a good candidate for your use case: assertj.github.io/doc/#assertj...

You want to assert equality of two Java objects in a test, but ignore some of their fields (e.g. timestamps); what do you do?