~/talks

Hannes Lowette

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Stop writing software like it's 1999!NDC Copenhagen 20262026-06-01
Many teams still design for the 1990s so code is brittle and slow to change; the talk argues for feature-oriented folders and modular monolith structures…
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If only I had known ...NDC London 20262026-01-26
Practical, actionable career habits: adopt a three-to-five year plan and break it into tiny, repeatable steps using the visualize 0-to-10 progress exercise…
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Event Sourcing dealing with an eventful pastBuild Stuff 20252025-12-03
Claims that storing append-only streams with sequence numbers (not state) recovers history, removes DB locks, and shifts compute out of the database for easier…
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10 things you didn't know EF Core can doØredev 20252025-11-05
Ten concrete EF Core capabilities appear with concrete limits and demos: value‑type properties replace complex types for faster in‑row mapping, implicit…
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If only I had known...Øredev 20252025-11-05
Concrete career moves and measurable heuristics matter: set three to five years goals and break them into tiny SMART steps, prioritize building skills and a…
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If only I had known ...NDC Copenhagen 20252025-09-08
Practical career rules: plan a 3–5 year target and pick roles that let you learn, not just chase salary; prioritize employers who invest in training, paid time…
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(Guitar) strings attached: from UTF-8 to EADGBENDC London 20252025-01-27
Builds a complete electric guitar from scratch after becoming a licensed carpenter, makes custom radius fretboard blocks and a routed neck with an installed…
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Your developer’s intelligence isn’t artificialBuild Stuff 20242024-11-13
Company builds a culture of shared learning by running an internal conference with 40 sessions so one in five employees presents, creating peer recognition and…
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Your developer’s intelligence isn’t artificialNDC Porto 20242024-10-14
Company builds a self-service training platform that uses points (time+money), lets people book conferences or Pluralsight/DomeTrain, warns when over budget…
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10 things you didn't know EF Core can doCPH DevFest 20242024-08-26
A practical checklist of 11 EF Core capabilities (one is fake): compiled queries to precompile LINQ and cut per-request parsing, SQL Server hierarchyid support…
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10 things you didn't know EF Core can doNDC Oslo 20242024-06-10
Live coding demonstrates EF Core features that actually work: mapping nested value objects as column groups (owned types without surrogate IDs), storing…
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Build software like a bag of marbles, not a castle of LEGO®NDC London 20242024-01-29
Shows a working modular approach that lets a single ASP.NET Core deployable gain or lose device support by dropping plugin assemblies into a folder, using…
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The Mario Kart™ guide to building a careerNDC Porto 20232023-10-16
Uses Mario Kart to give concrete career tools: set a 3–5 year direction not a distant dream, turn it into SMART goals, use a 10-step scale to pick the next…
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Guitar Strings attached From UTF 8 to EADGBENDC Porto 20232023-10-16
Starts from burnout recovery then details concrete guitar builds: a Fender Jazzmaster completed in six months, a reclaimed wangi fretboard, and a neck stress…
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(Guitar) Strings Attached: From UTF-8 to EADGBEGOTO Amsterdam 20232023-06-13
Builds custom electric guitars over six months while streaming on Twitch, learned woodworking through four years of evening school and becomes a licensed…
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Celebrity Deathmatch: Akka.NET vs OrleansNDC Oslo 20232023-05-22
Direct comparison of two .NET actor frameworks: Orleans uses virtual actor proxies, automatic distribution and snapshot-style persistence (state saved as…
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Celebrity Deathmatch: Akka.NET vs OrleansNDC London 20232023-01-23
Direct comparison of two .NET actor frameworks: Akka.NET uses local object references, offers 10 million msgs/s in the presenter’s laptop benchmark, favors…
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Build Software Like a Bag of Marbles, Not a Castle of LEGOYOW! Melbourne 20222022-12-08
Demonstrates a plugin approach that lets feature assemblies be dropped into or removed from a .NET deployment, using ASP.NET Core application parts, onion…
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Changing Lives with Hack Your FutureBuild Stuff 20222022-11-09
Hack Your Future runs a 9-month open-source curriculum taught on weekend half-days plus ~20 hours/week homework, teaching HTML/CSS/JavaScript/React and…
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Actors Can Rule Your DDD WorldBuild Stuff 20222022-11-09
Shows a weekend prototype called beercenter.net that models DDD aggregates as persistent actors using Aka.NET with command-side event sourcing, snapshots and…
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The Mario Kart™ Guide to Building a CareerBuild Stuff 20222022-11-09
Career advice uses Mario Kart to give concrete steps: set a 3–5 year direction, break it into SMART goals, measure progress on a 0–10 scale and pick the next…
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Actors can rule your DDD worldKanDDDinsky 20222022-10-31
Builds BeerSender.net using .NET 6 and Akka.NET to implement event-sourced aggregates with CQRS: actors hold aggregates, persistence IDs must be unique…
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Actors can rule your DDD worldCraft Conference 20222022-06-02
Shows using Akka.NET on .NET 6 to host DDD aggregates inside persistent actors, wiring CQRS command routers to per-aggregate actors and projectors for read…
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Actors can rule your DDD worldNDC Porto 20222022-04-25
A homemade shipping app called beerSender.net handles real-world UPS customs failures and uses .NET 6 with Akka.NET to model each DDD aggregate as a persistent…
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Drinking a river of IoT data with Akka NETNDC Oslo 20212021-11-29
Claims Akka.NET scales IoT ingestion to very large fleets using the actor model, with 2 million messages on a laptop versus Petabridge’s 50 million messages…
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Stop Punching Yourself in the FaceNDC Oslo 20212021-11-29
Series of concrete cautionary stories about choices that backfire: using RavenDB vs S3 to archive raw files becomes expensive and brittle; adopting Agatha…
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Stop punching yourself in the face!Build Stuff 20212021-11-17
Software teams pick shiny tools and then pay for them: storing raw files in RavenDB cost vs S3; adopting an abandoned library like Agatha (no maintainer) vs…
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Drinking a River of IoT Data with Akka.NETGOTO Copenhagen 20212021-11-08
Shows an Akka.NET-based IoT backend that ingests meter readings, normalizes timestamps, interpolates gaps and computes consumption; uses Akka.Remote for…
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The Mario Kart™ guide to building a careerNDC London 20212021-01-25
Uses Mario Kart to map concrete career moves: coach of 53 .NET consultants at Axxes; prescribes a three-to-five year direction, then SMART milestones and a…
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Stop Punching Yourself in the FaceGOTOpia November 20202020-11-10
A series of concrete failures and fixes: storing raw text in RavenDB cost per GB vs S3 teaches to check technical fit; choosing Agata that stopped being…
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The Mario Kart™ guide to career planningNDC Sydney 20202020-08-31
Uses Mario Kart as a concrete framework: set a 3–5 year direction, turn it into SMART goals and daily micro goals, pace learning just outside comfort so…
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Don’t Get Blamed for Your ChoicesGOTO Oslo 20202020-03-03
Team stores raw text files in Raven DB used as blob storage, driving up cost and ops overhead instead of cheap Azure Blob storage; choosing an unmaintained…
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Drinking a river of IoT data with Akka.NETNDC London 20202020-01-27
An Akka.NET cluster receives IoT meter events via Azure IoT Hub and an App Service, creates a proxy actor per device that obtains a remote actor ref…
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Drinking a river of IoT data with Akka.NETBuild Stuff 20192019-11-13
Demonstrates an Akka.NET architecture that turns each meter into a device-per-actor model, ingests events from IoT Hub / Event Hub via an App Service proxy…
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Build software like a bag of marbles, not a castle of LEGO®NDC Porto 20192019-02-26
Argues for modularizing features as drop-in assemblies rather than tightly coupled layers, showing a concrete approach: use onion architecture for a core with…
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