Vadym Kazulkin
where else to find them
website:https://vkazulkin.com/
github:Vadym79
bluesky:vkazulkin.bsky.social
linkedin:vadymkazulkin
speakerdeck:vkazulkin
devto:vkazulkin
what they talk about
all 10 in the filters
where they keep going back
- JCON EUROPE2 editions2023–2026
all 14 in the filters
on a stage with
- Firdaws Aboulayeonce
- Rodion Alukhanovonce
who talks about the same things
- Maximilian Schellhorn7 talks
- Ondro Mihályi14 talks
- Adam Bien53 talks
- Danilo Poccia16 talks
- Mykyta Berehulia2 talks
- Slobodan Stojanović16 talks
| title | conference | date |
|---|---|---|
| Serverless Java Web Applications on AWS Lambda with Micronaut Quarkus & Spring Boot | JCON EUROPE 2026 | 2026-04-20 |
Compares running a REST API (API Gateway → Lambda → DynamoDB) with Micronaut, Quarkus and Spring Boot and measures cold starts: about 100,000 warm starts and… | ||
| How to develop, run and optimize Spring Boot 3 application on AWS Lambda | Voxxed Days Ticino 2025 | 2025-01-16 |
Compares four deployment paths: AWS Serverless Java Container, AWS Lambda Web Adapter, Spring Cloud Function and custom Docker, measuring cold starts, warm… | ||
| Highly Scalable Image Storage with AWS Serverless | GOTO Amsterdam 2024 | 2024-06-10 |
Replaces ALB/EC2/EFS with S3 for object storage, API Gateway + Lambda for upload/download, S3 events for postprocessing and SNS/SQS fan‑out, and DynamoDB for… | ||
| How To Reduce Cold Starts for Java Serverless Applications in AWS | GOTO Amsterdam 2024 | 2024-06-10 |
Java cold starts drop a lot when specific tactics are applied: enabling AWS Lambda SnapStart cuts P90 from ~3.5s to ~2s and with priming to ~1.3s (≈60–70%… | ||
| High performance Serverless Java on AWS | GeeCON 2024 | 2024-05-15 |
Measurements show unoptimized Java Lambdas hit ~3.3s P90 cold starts (warm P90 ~7ms) across ~100 cold starts/hour. Enabling SnapStart plus a simple DynamoDB… | ||
| Developing Highly Scalable Image Storage Solution with AWS Serverless | GOTO EDA Day London 2024 | 2024-05-14 |
E-commerce image storage moves from ALB/EC2/EBS/EFS to a serverless stack using API Gateway, Lambda, S3, DynamoDB, SQS, SNS, EventBridge and Kinesis Data… | ||
| Reduce Cold Starts for Java Serverless Applications in AWS | JCON WORLD ONLINE 2023 | 2023-11-20 |
Java cold starts on AWS measure around 3–3.5 seconds for plain JVMs; using GraalVM Native Image brings p90 cold starts down to roughly 500–600 ms but forces… | ||
| Github Copilot vs. Amazon CodeWhisperer For Java Developers | JCON Europe 2023 | 2023-06-20 |
Comparison tests use GitHub Copilot (Codex / Copilot X preview on GPT‑4) and Amazon CodeWhisperer against Java tasks: singletons, date diffs, Project Euler… | ||
| Adapting Java for the Serverless world! | Voxxed Days Brussels 2023 | 2023-05-23 |
Java on AWS faces high cold starts and memory costs but practical fixes exist: using smaller bundles and async AWS SDK cuts download and init time; choosing… | ||
| Amazon CodeGuru and CodeWhisperer for Java Developers on AWS | Cloud Builders: Java Conf 2023 | 2023-03-30 |
Demonstrates Amazon CodeGuru Reviewer (and Profiler) plus CodeWhisperer applied to Java serverless code: CodeGuru flags hardcoded credentials, S3 clients… | ||
| Adapting Java for the Serverless world | Voxxed Days Luxembourg 2022 | 2022-06-21 |
Shows concrete numbers and recipes: Java cold starts often reach seconds not milliseconds, simple Java + DynamoDB hit 10–20s, optimizations (AWS SDK v2, async… | ||
| Adapting Java for the Serverless world | JCON-ONLINE 2021 | 2021-10-05 |
The talk examines how Java's cold-start time and memory footprint issues for serverless have been mitigated by improvements from cloud providers (with a focus… | ||
| Measuring and increasing developer productivity with the help of Serverless | JCON-ONLINE 2021 | 2021-10-05 |
Argues that AWS Serverless (Lambda, API Gateway, DynamoDB, EventBridge, Step Functions, Amplify) actually raises developer productivity by cutting code, ops… | ||
| Projects Valhalla, Loom and GraalVM | JCON 2020 | 2020-10-27 |
Covers three Java platform projects: Project Valhalla (introducing inline types/value types into Java), Project Loom (adding lightweight/concurrent… | ||
| Adopting Java for the Serverless world | JCON 2020 | 2020-10-27 |
Claims that GraalVM native images cut cold starts to under <0.5s cold starts and shrink memory by excluding unused classes, but building a native image takes… | ||
| FaaS or not to FaaS: Visible & invisible benefits of the Serverless paradigm | JCON 2020 | 2020-10-27 |
Compares full AWS serverless costs and tradeoffs: Lambda often makes up less than 1% of bill while API Gateway $3.5 per M requests and CloudWatch logs… | ||
| FaaS or not to FaaS? Visible and invisible benefits of the Serverless paradigma | NDC Sydney 2020 | 2020-08-31 |
Compares total cost of ownership for AWS serverless stacks — Lambda plus API Gateway, SNS/SQS/Kinesis, S3, DynamoDB, Aurora Serverless — and gives a decision… | ||
| FaaS or not to FaaS — Visible and Invisible Advantages of the Serverless Paradigm | W-JAX 2019 | 2019-11-04 |
The talk examines real total cost of ownership for serverless on AWS, going beyond Lambda function pricing to include costs of API Gateway, SNS/SQS/Kinesis… | ||
| Java Memory Model (JMM) for Beginners and Advanced Users | FrOSCon 2016 | 2016-08-20 |
Explains concrete Java Memory Model effects: how compilers and the JIT reorder operations despite strong hardware, how store buffer reordering causes visible… | ||
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