Streaming Large File Uploads in Java Without Killing Your Server
Spring's @RequestPart cannot stream multipart uploads — not even FilePart. The API that actually does, and the tests that prove it.
Performance
Optimizing nanosecond operations: when the CPU cache matters
A check took 29 s. Removing it saved 24 s - the rest moved to a line we didn't touch. Why?
JVM on Unikernel Nanos — GC trade-offs and heap uncommit
Testing five HotSpot garbage collectors and heap uncommit on Nanos, revisiting the Akamas study with Eclipse Temurin 25 and Renaissance.
179 viewsFoojay Podcast #103: Killing Reflection at Build Time with Dmitry Moskalyuk and Shai Almog
A backend data layer and a cross-platform UI framework both moved reflection to build time. Dmitry Moskalyuk and Shai Almog explain why, and …
Why Every JVM In Your Fleet Warms Up Alone
Why you can't just copy a JIT-compiled method from one JVM to another: compiled code is a bet on one specific JVM's state. Identity, …
From OpenTelemetry to DuckDB
Observability platforms generally expect you to do your analysis inside them, using their query language and their dashboards. That works …
Jakarta Faces, Java Web Framework, Stateless Edition: Marketplace AliFaces
A Fully Stateless Jakarta Faces Marketplace with Server-Side Rendering — No HttpSession, No Saved ViewState, No Sticky Sessions (see the poc …
Running DuckDB's JDBC Driver in a GraalVM Native Image
DuckDB is an in-process analytical database. You add one JAR to a Java project and get a SQL engine that reads CSV, Parquet, and JSON files …
DuckDB in Spring Batch: Replace In-Memory Java Loops with One SQL Statement
Spring Batch jobs usually follow the same pattern: an ItemReader streams rows, an ItemProcessor transforms each one, and an ItemWriter …
Embedding DuckDB in a Maven App (and Using It for Things That Aren't Databases)
DuckDB is described as "SQLite for analytics," which is true: it's an in-process database engine that runs inside your application, with no …