Nahrávka z přednášky:
Recording from the presentation (in Slovak language):
Čas / Time: 15.11.2022 19:00 (15th November 2022, 7pm)
Název / Title: CZJUG Praha – Superfast serverless Java in AWS Lambda
Místo / Location: Matematicko-fyzikální fakulta Karlovy Univerzity, Malostranské náměstí 25, Praha 1. Posluchárna S5, 2. patro (room S5, 2nd floor)
Jazyk / Language: Slovensky (Slovak, no attendee requested English)
Po delší přestávce kvůli covidu proběhne setkání Pražské Czech Java User Group v úterý 15.11. od 19h. Místo je stejné jako bývalo před covidem, v posluchárně S5 ve 2. patře na Matematicko-fyzikální fakultě Karlovy Univerzity na Malostranském náměstí 25, Praha 1. Vstup na akce CZJUGu je zdarma, a není třeba se předem registrovat.
Pokud se chystáte přijít, dejte nám vědět přihlášením na tuto událost na facebooku.
EN: The next meetup will happen on Tuesday 15th November at 19:00, in room S5, 2nd floor in the building of the Charles University at Malostranské Náměstí 25, Praha 1. Free entry, no registration needed.
CZJUG sponsors:
- Ataccama – video recordings
- JetBrains – licenses for speakers
- Oracle
Afraid of Java cold starts in Serverless? Fear not, Java is super fast!
In this session, I want to show you the truth about Serverless Java and cold starts, what’s slow, what’s fast and why it matters. We’ll go through what a cold start is, how cold starts in AWS Lambda impact your application responsiveness and cloud costs, and what are the options to optimize both. We’ll explore and compare Quarkus and Piranha Cloud, the most modern and fastest Jakarta EE frameworks. We’ll test the limits of what they are capable of, how fast they start and whether we even need to think about any optimizations. Then I’ll explain what optimizations may help if you need to go further, like tuning the JVM, using a custom JVM runtime or building a OS-native binary with GraalVM. However, there are also a few limitations and cost implications of these optimizations, which we’ll also explain.
At the end, I will explain how Piranha Cloud framework happened, what it has in common with the Eclipse GlassFish application server and how Eclipse GlassFish evolved to allow Piranha Cloud to happen.
Speaker: Ondro Mihályi
Ondro is a core member of several opensource projects and Jakarta EE specification projects. He’s a frequent conference speaker, leader of the Czech JUG and a Java Champion.
He has co-founded OmniFish, which provides enterprise support for Eclipse GlassFish and expert Jakarta EE services. He’s passionate about helping his clients and the wider Java community with their projects based on Jakarta EE and similar technologies.