title	conference	date
Unlocking the unknowns: Cryptography Essentials	Voxxed Days Bucharest 2025	2025-03-27
Covers four concrete needs — integrity, authentication, confidentiality, non‑repudiation — and shows how to implement each with Java SE APIs plus optional… Talk on
A Practical Use Case of Software Architecture Evolution	Voxxed Days Bucharest 2024	2024-03-27
A concrete e‑commerce MVP starts as a layered monolith in Java, evolves to a hexagonal ports-and-adapters model to decouple many third‑party integrations, then… Talk on
The Future is 💚: A Journey through the Energy Efficient ..	Voxxed Days Bucharest 2024	2024-03-27
Measured Java results from JDK 21 and multiple JVMs use real load tests two hours long against Spring PetClinic and a Quarkus sample with energy readings from… Talk on
Energy Efficient Design Principles of Software Engineering	J-Fall 2023	2023-11-09
Measurements use Intel RAPL via perf to report CPU+RAM energy; running Spring PetClinic with ~110k requests in 15 minutes and a Quarkus test with ~650k… Talk on
A journey to JVM Excellence: Navigating JDKs and JVMs	Voxxed Days Cluj 2023	2023-10-11
Public benchmarks use JMH, JDK 17, x86 and aarch64, HotSpot C2, GraalVM CE and Oracle GraalVM and reveal concrete tradeoffs: Oracle GraalVM CE/Enterprise often… Talk on
PANEL: Unleashing the Future: The Impact of Gen AI on Development Productivity	Voxxed Days Cluj 2023	2023-10-11
Panel reports developers using co-pilot and ChatGPT daily but finding concrete limits: generated code sometimes introduces SQL injection and XSS because models… Panel on
Create an Eco-Friendly World with Green Software Engineering	JCON Europe 2023	2023-06-20
Measures energy from source to hardware using Spring PetClinic and Quarkus under load, running perf on Linux and use perf and Renaissance for 33‑minute load… Talk on
Techniques for a faster JVM start-up	Voxxed Days Cluj-Napoca 2022	2022-10-05
Cold-start techniques create and reuse JVM artifacts to cut first-response time: generating a dynamic CDS hive for OpenJDK reduces a Spring PetClinic cold… Talk on
Techniques for a faster JVM start-up	Voxxed Days Bucharest 2022	2022-03-23
Explains concrete ways to shave startup seconds: using dynamic CDS (AppCDS) on HotSpot cuts a typical Spring Boot boot by about a second but requires identical… Talk on
Demystifying the Most Significant Java Language Features from 9 to 11	DevDays Europe 2019	2019-05-14
Shows concrete internals and measured effects: JDK 9 replaces char[] with a byte[] plus a coder so bytecode size and memory drop for Latin‑1 strings but… Talk on
Java performance techniques The cost of HotSpot runtime optimizations	Voxxed Days Vienna 2017	2017-03-16
HotSpot C2 (threshold ~10k) often makes aggressive assumptions that can yield 100x faster runs versus the interpreter but a single unexpected branch triggers… Talk on
From Bytecode to Native Code in HotSpot JVM	Voxxed Days Bucharest 2016	2016-03-11
Explains how HotSpot moves Java bytecode through interpreter → C1 → C2 with client threshold ~1.5k invocations, tiered compilation to C2 for heavy methods… Talk on
nothing matches

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