Daniel Marbach @daniel.openplace.net · 30/09/2026My vacation experiment... Makes your AI agent think like the architect everyone rolls their eyes at, until they're right. danielmarbach.github.io/turtleneck/ #AgentSkills #aiagent 110
Reposted by Daniel MarbachKevin Gosse @kevingosse.net · 29/09/2026I published a new article: the hidden trap of fixed buffers in C#. It explains a quirk of fixed buffers that could easily bite you, if you're one of the few people who still have to use that feature. minidump.net/the-hidden-t...minidump.netThe hidden trap of fixed buffers in C#After all, if they’re marked as unsafe, there’s gotta be a reason, right? 285
Daniel Marbach @daniel.openplace.net · 21/09/2026Azure Service Bus cannot autoforward a session-enabled subscription. I explored a transactional bridge that keeps one session-enabled endpoint queue and a recoverability model. www.planetgeek.ch/2026/09/21/a... #azure #dotnetplanetgeek.chAzure Service Bus sessions: Pub/sub without autoforwardingTL;DR: Azure Service Bus does not support autoforwarding from a session-enabled subscription. A direct workaround is to process each subscription as an application input, but that spreads session lock... 021
Daniel Marbach @daniel.openplace.net · 15/09/2026Delayed retries can break Azure Service Bus session ordering. If A1 fails, A2 and A3 may overtake it. Strict order may require a hold-back. www.planetgeek.ch/2026/09/15/a... #azure #dotnetplanetgeek.chAzure Service Bus sessions: Delayed retries may need a hold-backTL;DR: Most workflows are better off accepting out-of-order delivery and modeling the business process to cope with it. If strict order is a real requirement, however, Azure Service Bus sessions are o... 022
Daniel Marbach @daniel.openplace.net · 02/09/2026Topology migrations are safest when they are boring. While helping a customer migrate an Azure Service Bus topology, we moved one event stream at a time: prepare the new path, switch publishers, observe, then remove the old path. www.planetgeek.ch/2026/09/02/a... #azure #dotnetplanetgeek.chAzure Service Bus: Migrate topology one event at a timeTL;DR: Azure Service Bus can run an old and a new delivery path side by side while you migrate one event stream at a time. A delivery path is the route from a publisher, through a topic and subscripti... 000
Daniel Marbach @daniel.openplace.net · 25/08/2026One backed-up event stream on a shared Service Bus topic can send unrelated API latency through the roof. I've seen it happen. A shared topic concentrates risk. Design topics as failure boundaries. www.planetgeek.ch/2026/08/25/a... #azure #dotnetplanetgeek.chAzure Service Bus: Designing for blast radiusTL;DR: Blast radius means how much unrelated traffic is affected when one messaging resource reaches a limit or stops making progress. If every event type shares one Azure Service Bus topic, a backed-... 010
Daniel Marbach @daniel.openplace.net · 14/08/2026One topic, many subscriptions in Azure Service Bus. A shared topic can be a good trade-off. But filters, fan-out, and storage work accumulate there, and topic depth shows when delivery falls behind. www.planetgeek.ch/2026/08/14/a... #AzureServiceBus #NServiceBusplanetgeek.chAzure Service Bus: One topic, many subscriptionsTL;DR: A single Azure Service Bus topic can be a reasonable starting point for one-to-many messaging. The topic receives published messages, and subscriptions provide separate delivery views for consu... 022
Daniel Marbach @daniel.openplace.net · 03/08/2026I’ve been using Azure Service Bus since the Service Bus for Windows Server days. My new series covers Azure Service Bus lessons learned the hard way. First up: filter count. At scale, the number of rules can matter more than the filter type. www.planetgeek.ch/2026/08/02/a... #azureplanetgeek.chAzure Service Bus: Count your filtersTL;DR: Azure Service Bus can publish one message to a topic and deliver it to multiple consumers. A topic is the shared destination, a subscription is a consumer-specific view, and a filter decides wh... 011
Reposted by Daniel MarbachPatricia Aas 🐢🏳️🌈 @patigallardo.bsky.social · 26/07/20261/ The Chinese Open Source model Kimi-k3 from Moonshot AI is claiming it will release it’s weights on Monday. «The full model weights will be released by July 27, 2026.» What does this mean in normal speak and what are the possible implications on stocks and politics? www.kimi.com/blog/kimi-k3kimi.comKimi K3 Tech Blog: Open Frontier IntelligenceKimi K3 is the world's first open 3T-class model — frontier performance across coding, knowledge work, and reasoning, with native multimodality and 1M context. 13512
Daniel Marbach @daniel.openplace.net · 21/07/2026Finally something that makes the open router added markup worth it openrouter.ai/docs/guides/...openrouter.aiAuto Router - Intelligent Model SelectionAutomatically select the best AI model for your prompts using OpenRouter's Auto Router powered by task type rankings. 000
Daniel Marbach @daniel.openplace.net · 20/07/2026How do you keep performance gains without fooling yourself? The final post in my performance and benchmarking series covers useful regression gates, benchmark variance, noisy CI runners, and why human judgment still matters. www.planetgeek.ch/2026/07/20/k... #dotnet #performance 012
Reposted by Daniel MarbachZurichJS @zurichjs.com · 08/07/2026So happy to have @debbie.codes joining us this September 💛 Platform Engineer doing Applied AI at Zephyr Cloud, ex-Microsoft Playwright wizard, and just genuinely one of the good ones in this community. Come say hi and catch her talk! 0116
Reposted by Daniel MarbachClemens Vasters @clemens.vasters.com · 06/07/2026UEFA www.uefa.com/news-media/n...uefa.comUEFA statement on the Balogun caseStatement on decision related to Folarin Balogun 181
Daniel Marbach @daniel.openplace.net · 02/07/2026I wrote about what happens when a message handler outlives the queue lease. Renewing sounds easy until you need a renewer, mutating receipts, coordinated delete, and shutdown juggling. The first loop is easy. The edges are where the work lives. www.planetgeek.ch/2026/06/29/w... 011
Daniel Marbach @daniel.openplace.net · 22/06/2026A benchmark win is not the finish line. The real workload may tell a different story. Profile the larger execution path again to see whether the improvement compounds. www.planetgeek.ch/2026/06/22/a... 010
Daniel Marbach @daniel.openplace.net · 20/06/2026The first version of a message pump is easy. The tenth version contains: retries idempotency transactions topology monitoring The hard part isn’t the loop. It’s owning every failure mode behind the loop. www.planetgeek.ch/2026/06/20/m... #dotnet #messaging 010
Daniel Marbach @daniel.openplace.net · 15/06/2026The biggest red bar isn’t always the biggest problem. Profilers reveal costs. We set priorities. www.planetgeek.ch/2026/06/08/r... #dotnet #performance 011
Daniel Marbach @daniel.openplace.net · 13/06/2026We inherited a legacy medical invoicing system. The business wanted to expand into web shops. Same invoices. Very different failure modes. Here’s what a message queue taught us about temporal decoupling 🧵👇 www.planetgeek.ch/2026/06/13/l... 142
Daniel Marbach @daniel.openplace.net · 10/06/2026Production code is too noisy. Benchmarks are too focused. Between them sits the profiling harness. Small enough to isolate a code path. Realistic enough to expose allocations and CPU costs. Visibility first. Comparison second. www.planetgeek.ch/2026/06/01/b... #dotnet #performance 010
Daniel Marbach @daniel.openplace.net · 08/06/2026The first benchmark I wrote looked deceptively easy. A class. A few attributes. A method. The hard part isn't writing benchmarks. It's knowing what deserves one. Profiles identify. Benchmarks validate. Production teaches. www.planetgeek.ch/2026/05/27/s... #dotnet #performance 020
Daniel Marbach @daniel.openplace.net · 18/05/2026Openclaw Patch has now #dotnet support thanks to a collaboration between me github.com/openclaw/cla... and Simon github.com/openclaw/cla...github.com 010
Reposted by Daniel Marbachsimoncropp.bsky.social @simoncropp.bsky.social · 16/05/2026Proposal: Open Source Maintenance Fee for Verify github.com/orgs/VerifyT... Any feedback is appreciated #dotnetgithub.comProposal: Open Source Maintenance Fee for Verify · VerifyTests · Discussion #1731The Verify project is considering adopting the Open Source Maintenance Fee (OSMF), and we'd like to open it up for discussion before committing to anything. Verify has been freely available since 2... 4167
Daniel Marbach @daniel.openplace.net · 04/05/2026Preparing for a CfP? Read this first einarwh.no/blog/2026/04...einarwh.noWhat to say 010
Reposted by Daniel MarbachParticular Software @particular.net · 03/05/2026It's not too late to register for Poornima's workshop - Beyond Publish/Subscribe: Messaging Patterns in Practicetechorama.be 031
Reposted by Daniel MarbachBarry Dorrans @blowdart.me · 21/04/2026.NET has an out of band update today to fix CVE-2026-40372, an Elevation of Privilege, which, in some cases, could allow an attacker to forge authentication tickets, or decode authentication tickets or other protected data. github.com/dotnet/annou...github.comMicrosoft Security Advisory CVE-2026-40372 – ASP.NET Core Elevation of Privilege · Issue #395 · dotnet/announcementsMicrosoft Security Advisory CVE-2026-40372 – ASP.NET Core Elevation of Privilege Executive Summary: A bug in Microsoft.AspNetCore.DataProtection 10.0.0-10.0.6 NuGet packages can give an attacker th... 22417
Reposted by Daniel MarbachTodd H. Gardner @toddhgardner.com · 16/04/2026Most engineers undervalue their time. You have more important work to do than re-inventing the wheel. 063
Reposted by Daniel MarbachWeekday Jokes @weekdayjokes.bsky.social · 06/04/2026Mortal Kombat was actually based on a Scandinavian church song. It was a Finnish hymn 12664180
Reposted by Daniel MarbachKanDDDinsky @kandddinsky.bsky.social · 17/03/2026We don't need another DDD intro talk. We need your stories. The refactoring that almost sank the project. The EventStorming that exposed real org structure. The model that collapsed under load. KanDDDinsky 2026 is built on experience reports. CFP closes March 21: sessionize.com/kandddinsky-... 033
Daniel Marbach @daniel.openplace.net · 23/02/2026I can ship some. A metric ton in your living room enough? 020
Reposted by Daniel MarbachKirill Osenkov @kirillosenkov.com · 21/02/2026PerfView can record all managed exceptions in all processes system-wide thanks to the .NET ETW provider, with callstacks. I built a viewer for these .etl files: 3398
Daniel Marbach @daniel.openplace.net · 21/02/2026But at the end of the day you realize once you mastered those things that what counts is that you started somewhere and learned what to try, use and dismiss and how to separate BS from usefulness 010
Daniel Marbach @daniel.openplace.net · 21/02/2026Honestly I believe it doesn't really matter where you start. It's similar to for example trying to become a perf expert or a gym rat. If you research those topics you realize there is so much that you just want to stick your head in the sand. 310
Daniel Marbach @daniel.openplace.net · 21/02/2026This is a good summary that describes the strengths of both approaches youtu.be/41UDGsBEjoI?...youtu.beCodex 5.3 vs Opus 4.6: The Benchmark Nobody Expected. (How to STOP Picking the Wrong Agent)YouTube video by AI News & Strategy Daily | Nate B Jones 010
Daniel Marbach @daniel.openplace.net · 21/02/2026Ok. I would have recommended then to start with codex. I think it is superior to Claude but some others might disagree. The cool thing with openai is that you can use it in open code. With Claude that is against terms and might get you into banning 200
Daniel Marbach @daniel.openplace.net · 21/02/2026This is an excellent wakeup call m.youtube.com/watch?v=q6p-...m.youtube.comGoing Slower Feels Safer, But Your Domain Expertise Won't Save You Anymore. Here's What Will.YouTube video by AI News & Strategy Daily | Nate B Jones 000
Daniel Marbach @daniel.openplace.net · 21/02/2026One thing that really helped me was to embrace the fact that I have years of experience, trust my instincts, know my and the tools limits and then experiment while keeping a sane scepticism. And then try and error. Rinse and repeat 010
Daniel Marbach @daniel.openplace.net · 21/02/2026Try open code with something like open router or synthetic. There is so much more than just anthropic and openai 110
Reposted by Daniel MarbachAndy Kelk @andykelk.net · 21/02/2026I like @willvelida.com's definition of AI coding as HVE (hyper velocity engineering). Important point being velocity which implies *direction* not just speed. #DDDMelb 053
Reposted by Daniel MarbachKelsey Hightower @kelseyhightower.com · 10/02/2026We are asking developers to do more with less, including less pay. Either we have managed to cut cost without reducing output, or we have increased output, but have very little to show for it. I'm sure there is another narrative around creating new opportunities, but I'm not hearing about those. 37711
Reposted by Daniel Marbachqdot @buttplug.engineer · 04/02/2026inspired by CLAUDE.md, I’ve started putting markdown files named after coworkers into work code repos so I can remind them to stop doing shit to the codebase that annoys me for some reason they’re all mad at me now, which means ill be adding commands to JEREMY.md for an attitude adjustment 6814176
Daniel Marbach @daniel.openplace.net · 03/02/2026The enshitification of chatgpt medium.com/write-a-cata...medium.comOpenAI’s Latest Move Confirms My Worst FearA few days back, I saw this mail from OpenAI. 010
Reposted by Daniel MarbachLaurent Kempé 🚀 @laurentkempe.com · 01/02/2026Vercel's AGENTS.md approach outperforms skills by embedding comprehensive Next.js docs into the agent context, avoiding decision points and ordering issues while ensuring consistent availability across turns — though skills still shine for focused, user-triggered tasks like upgrades or migrations.vercel.comAGENTS.md outperforms skills in our agent evals - VercelA compressed 8KB docs index in AGENTS.md achieved 100% on Next.js 16 API evals. Skills maxed at 79%. Here's what we learned and how to set it up. 031
Reposted by Daniel MarbachParticular Software @particular.net · 29/01/2026Join @jasontaylordev for a live webinar: Effortless Distributed Systems with Aspire, February 4 at 01:00 UTC. Learn how Aspire orchestrates services with reliability & observability, NServiceBus improves resilience, and Azure Developer CLI streamlines dev→cloud.particular.netEffortless Distributed Systems with AspireSee how Aspire, NServiceBus, and Azure Developer CLI simplify building distributed systems in this interactive session. … 011
Daniel Marbach @daniel.openplace.net · 24/01/2026Congratulations and thanks for everything you did! 010
Daniel Marbach @daniel.openplace.net · 24/01/2026Be sure to ping this swiss dude. Happy to torture you and your husband 🤪 100
