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Developer Advocate with 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector). Usually working on Java/Java EE and Spring technologies, but with focused interests like Rich Internet Applications, Testing, CI/CD and DevOps. Also double as a trainer and triples as a book author.
- Pseudo-Random Number Generators: From the Origins to Modern Algorithms (2024-11-17)
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How can we generate a uniform sequence of random numbers? The randomness so beautifully and abundantly generated by nature has not always been easy for humans to extract and quantify. Pseudo-Random Number Generators are fundamental tools in many areas of software development: PRNGs do not produce truly random numbers but rather deterministic sequences that simulate randomness. The quality of a PRNG is determined by its ability to produce sequences that are statistically indistinguishable from t[…]
- Langchain4J musings (2024-11-10)
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I’m coming relatively late to the LLM party, but I rarely come very early in the hype cycle. For example, I never bought into blockchain, the solution still searching for problems to solve, nor in microservices, the latest in the cargo cult IT trends. Despite my late arrival at the LLM party, I have been a regular user of LLMs. I use OpenAI for non-controversial questions outside my cone of knowledge, e.g., linguistics or legal; I use GitHub Copilot in my IDE to improve my code. Th[…]
- DuckDB in Action (2024-11-03)
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The book was sent to me by Michael Simons. He asked for my feedback: I changed my reading schedule, took a few months, and here it is. Facts 10 chapters288 pages$33.59 (eBook) Note that MotherDuck, a company providing an online service that builds upon DuckDB, offers a free PDF copy. Chapters An introduction to DuckDBGetting started with DuckDBExecuting SQL queriesAdvanced aggregation and analysis of dataExploring data without persistenceIntegrating with the Python ecosystemDuckDB in the[…]
- Make Your Security Policy Auditable @ Porto Tech Hub
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All mature tech stacks nowadays offer infrastructure-related capabilities, either a standard lib or in 3rd-party libraries, e.g., rate-limiting and authorization. While it’s great to have such features, it’s impossible to audit them easily. You’d need to be familiar with the stack and dive deep into the code. This approach just doesn’t scale, A well-designed system keeps the right feature at the right place. In this talk, I’ll go through all steps toward making your system more easily auditable. I’ll use the authorization of a security policy as an example and start from a regular Spring Boot project with Spring Security. I’ll then move step-by-step, introducing the Open Policy Agent (OPA) and the Apache APISIX API Gateway. The end result will have moved all authorization details buried in the code in a readable accessible place.
- Introduction pratique à OpenTelemetry pour les développeurs @ DevFest Dijon
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Il est essentiel de suivre le parcours d’une requête à travers les différents composants d’un système distribué. Avec l’essor des microservices, cette fonctionnalité a atteint un niveau de criticité comme jamais auparant. Certains outils propriétaires de suivi vous sont peut-être connus : Jaeger et Zipkin viennent naturellement à l’esprit. L’observabilité repose sur trois piliers : la journalisation, les métriques et le traçage. OpenTelemetry est un effort conjoint visant à mettre en place un standard ouvert pour ces trois piliers. Jaeger et Zipkin se sont joints à cet effort et sont maintenant compatibles avec OpenTelemetry. Dans cet exposé, je décrirai plus en détail ce qui précède et je présenterai un cas d’utilisation (simple) pour démontrer comment vous pourriez bénéficier des traces OpenTelemetry dans votre architecture distribuée.
- Make Your Security Policy Auditable @ Amsterdam JUG
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All mature tech stacks nowadays offer infrastructure-related capabilities, either a standard lib or in 3rd-party libraries, e.g., rate-limiting and authorization. While it’s great to have such features, it’s impossible to audit them easily. You’d need to be familiar with the stack and dive deep into the code. This approach just doesn’t scale, A well-designed system keeps the right feature at the right place. In this talk, I’ll go through all steps toward making your system more easily auditable. I’ll use the authorization of a security policy as an example and start from a regular Spring Boot project with Spring Security. I’ll then move step-by-step, introducing the Open Policy Agent (OPA) and the Apache APISIX API Gateway. The end result will have moved all authorization details buried in the code in a readable accessible place.
