- On metrics
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There’s still an ongoing debate whether development in particular and IT, in general, are engineering practices. In all cases, there’s no denying that our industry is based on scientific foundations. Most of the organizations I’ve worked for implement the Deming wheel in one form or another: From a bird’s eye view, it makes a lot of sense. And given the success of the method in the Japanese car industry, there’s no denying that it’s effective.
- Claude Code system prompts
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If you’re configuring your own agent and need to go beyond "you’re a helpful assistant", I think it deserves a read. It’s quite long. It tackes different aspects, including legal and safety. It uses a couple of XML tags.
- OTTL context inference comes to the Filter Processor
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The OpenTelemetry world is ever-improving!
- I Hacked This Temu Router. What I Found Should Be Illegal
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- Observability Without Cost Telemetry Is Broken Engineering
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Observability projects are expensive and it’s hard to get buy-in from the business. Why not get buy-in from the CTO instead, but offering cost reduction options incentives?
- Running OpenTelemetry at Scale: Architecture Patterns for 100s of Services
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- Why a Single Collector Falls Apart (and When)
- Collector Tiers: The Architecture That Actually Scales
- Load Balancing: The Subtle Trap with Tail-Based Sampling
- Multi-Cluster Setups: When One Pipeline Is Not Enough
- Keeping the Pipeline Itself Observable
- Rolling This Out Without Breaking Everything
If you want to be serious about OpenTelemetry, you must read this post and understand the underlying concepts.
- I Audited the Privacy of Popular Free Dev Tools — The Results Are Terrifying
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They indeed are.
- Use an ad blocker
- Use browser DevTools
- Use privacy-first alternatives
- Use local CLI tools
For good measure, I use Pi-hole.
- Claude Code Performance: Unlock Deep Thinking for Better Results
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TIL: you can set plan mode in the prompt.
- OVHcloud Kubernetes Review: Europe’s Quiet Powerhouse
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Great fit for:
- European companies needing EU data sovereignty
- Teams comfortable with Infrastructure as Code
- Production workloads that need reliable, no-nonsense Kubernetes
- Cost-conscious teams (free control plane, competitive node pricing)
- Projects where IP-based API restrictions are sufficient security
Consider alternatives if:
- You need RWX volumes heavily (NFS setup adds complexity)
- You require managed VPN connectivity
- Your team prefers ClickOps over IaC (the console works but IaC is where OVH shines)
- You want a self-hosted approach on cheaper VMs
- I Downgraded Java to JDK 1.1 After 30 Years… It Was a Disaster
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Quite the interesting experience!
- Neko
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A self hosted virtual browser that runs in docker and uses WebRTC
Amazing for sharing and privacy.
- I Only Make Documents in One Format
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The article praises Pandoc. I heard pretty good things about it too. I tried previously to use it to transform an Asciidoc blog post to Markdown, with very limited success. In essence, I had to spend more or less time depending on the complexity of the original text.
For the record, I crafted a command for Claude Code and it works very well in comparison.
A Java Geek weekly 127
On metrics. Claude Code system prompts. OTTL context inference comes to the Filter Processor. I Hacked This Temu Router. What I Found Should Be Illegal. Observability Without Cost Telemetry Is Broken Engineering. Running OpenTelemetry at Scale: Architecture Patterns for 100s of Services. I Audited the Privacy of Popular Free Dev Tools — The Results Are Terrifying. Claude Code Performance: Unlock Deep Thinking for Better Results. OVHcloud Kubernetes Review: Europe’s Quiet Powerhouse.
