~/talks

François Teychene

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Reconciling Kafka, SQL and ParquetDevoxx France 20242024-04-17
Presents a practical pipeline to export Kafka Avro topics into Parquet files and run instant SQL queries with DuckDB (Avro → Parquet dumps + DuckDB queries)…
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Real-time Analytics for Your Users with Apache PinotDevoxx France 20222022-04-20
How to deliver real-time analytics to users on freshly ingested data at scale using Apache Pinot. Covers use cases like activity feeds and delivery dashboards…
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Algebraic Data Type in Java 17Devoxx France 20222022-04-20
Shows how Java 17 features—sealed interfaces, records, and pattern matching (preview)—can be used to model algebraic data types as closed sum types, replacing…
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The design of errorDevoxx France 20212021-09-29
Argues that errors should be treated as designed signals rather than rare bugs, categorizing them as semantic, logic, or runtime issues and comparing handling…
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Functional Programming - The Architecture of ChoiceDevFest du Bout du Monde 20202020-02-28
The talk examines why functional programming remains marginal in industry despite many introductory talks, listing common barriers like learning time…
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From microservices to migroservicesBDX I/O 20192019-11-15
The talk examines why projects that start as microservices often devolve into “migroservices” — services that regain monolithic characteristics. It names…
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The Design of ErrorDevFest Toulouse 20192019-10-03
Design errors into products by modeling failure as part of workflows rather than just catching exceptions. Techniques covered include the saga pattern for…
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From Microservices to MigroservicesDevFest Lille 20192019-06-14
Explains that moving a monolith to microservices can create a “distributed monolith” (called a migroservice) that adds network faults, orchestration and ops…
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How UX Saved My DevOpsDevFest du bout du monde 20192019-02-22
A ~23-person DevOps team fixed communication and prioritization by using UX-style workshops and making work visible: backlog triage (ops backlog ~4× dev)…
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My First Service in RustBDX I/O 20182018-11-08
Shows how to quickly build a usable web service in Rust, presenting Rust as more than a systems language by comparing it to C and highlighting its suitability…
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Systemd, from /dev/null to rootDevFest Toulouse 20182018-11-08
An introduction to why systemd replaced SysV init in modern Linux distributions and how its unit files (stored under /lib/systemd with overrides in…
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UX saved my DevOpsDevfest Lille 20182018-06-21
UX practices are used to break down the DevOps barrier by driving concrete changes: they reduced the backlog about fourfold, created shared visual roadmaps…
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How UX Saved My DevOpsDevFest Nantes 20172017-10-19
A playful comparison between UX and DevOps that treats them like rival families but shows how their roles converge. It describes commonalities (both emerged in…
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Interview with Estelle Landry and François TeychenéDevFest Nantes 20172017-10-19
An interview with Estelle Landry and François Teychené about how user experience (UX) practices improved their DevOps work. They discuss concrete interactions…
Interview in French on
UX Saved My DevOpsDevFest Toulouse 20172017-09-28
Describes using UX techniques (workshops with post‑its, roadmap board, 5 Whys, speedboat, personas, and de Bono’s Six Thinking Hats) to improve DevOps…
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A PaaS for your team in 20 minutesDevFest Nantes 20162016-11-09
Shows how to set up a private PaaS for a team in about 20 minutes using Dokku (inspired by Heroku) and Docker. Covers installing Dokku and deploying apps from…
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