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Building real-time data pipelines with Apache Kafka

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Tags data-science devops streaming queues streaming analytics

This article explores the challenges and best practices for building robust real-time data pipelines using Apache Kafka. It emphasizes the importance of aligning pipeline design with downstream decision-making, defining event contracts early, and ensuring observability and replayability. The piece is particularly valuable for developers and DevOps engineers working with streaming data at scale. By Tran Tien Van.

Real-time pipelines are easy to pitch and hard to operate. The technical challenge is not publishing messages into Kafka. The challenge is building a system that stays observable, replayable, and financially sane once traffic grows.

Main points author makes:

  • Start with the downstream decision: Define what the data is for before building the pipeline. If the decision doesn’t improve with real-time data, a batch pipeline may be more appropriate.
  • Design the event contract before writing code: Establishing data schemas and governance early prevents costly rework as the system scales.
  • Prioritize observability and replayability: These are critical for debugging, testing, and maintaining Kafka-based systems in production.
  • Consider cost implications: Real-time systems can become expensive at scale; balance performance needs with financial sustainability.
  • Use tools like schema registries and monitoring dashboards to maintain data quality and system health.

This article provides a practical framework for structuring Kafka-based pipelines that are not only fast but also maintainable and cost-effective. It’s a must-read for engineers building or managing real-time data systems. Nice one!

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How to debug coding agents with LangSmith traces

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Tags ai devops software-architecture software app-development

This article explores how LangSmith traces can help developers debug and optimize coding agents like Claude Code, Codex, and Copilot. It details how tracing tool calls, subagents, and errors can uncover hidden issues in AI-assisted development workflows. By Hari Harish.

When building a CSV export feature using a coding agent, a developer encountered persistent errors due to a subagent using outdated pagination logic. This experience highlights the challenges of debugging AI-assisted development workflows where multiple agents interact and make autonomous decisions. LangSmith traces provide visibility into these interactions, enabling developers to pinpoint issues quickly and avoid costly trial-and-error debugging.

Few points to note:

  • LangSmith traces reveal the full execution path of coding agents, including subagent interactions and tool calls.
  • Tracing helps identify deprecated or misconfigured components that cause agent behavior to deviate from expectations.
  • Debugging with traces reduces time spent on re-explaining requirements and accelerates problem resolution.
  • Visualizing agent workflows improves understanding of how AI models interact with codebases.
  • Traces provide insights into token usage, costs, and retry patterns that impact development efficiency.

LangSmith traces are an essential tool for developers working with AI-powered coding assistants. By providing deep visibility into agent behavior, they help reduce debugging time, improve code quality, and enhance the overall developer experience. This article is particularly valuable for DevOps engineers, software architects, and developers integrating AI into their workflows. Good read!

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Build a local AI coding agent from scratch

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Tags ai code-refactoring devops javascript

This article explores how to build a minimal AI coding agent using Gemma 4 on llama.cpp, focusing on the role of tool harnesses and the security implications of running such agents unsandboxed. It also introduces NVIDIA OpenShell as a containment solution. By Murat Sari.

A language model, on its own, reads text and writes text. It cannot open a file, run a command, or save your landing page to disk. It can only describe what it would do. A harness turns that description into action. It takes the model’s requested tool call, runs the tool, returns the result, and lets the model decide what to do next. Strip away the personality and an “AI agent” is a model and a harness. This article will give you a better understanding of how tools like Claude Code or Cursor work by building your own minimalistic AI agent.

Some important pointes author makes:

  • A minimal AI agent consists of a language model and a tool harness that translates model output into real-world actions.
  • Running AI agents locally with direct access to system tools can pose significant security risks if not properly contained.
  • NVIDIA OpenShell provides a secure sandboxing environment to safely run AI agents with access to system commands.
  • Building a local AI agent from scratch helps demystify how advanced coding assistants like Cursor operate under the hood.
  • The article emphasizes the importance of understanding both the capabilities and limitations of AI agents in development workflows.

This is a valuable resource for developers and DevOps engineers interested in understanding the inner workings of AI coding assistants. It provides practical insights into building and securing local AI agents, making it particularly relevant for those experimenting with or deploying AI tools in development environments. While the concepts are technical, the hands-on approach makes it accessible for intermediate developers looking to deepen their understanding of AI-integrated workflows. Nice one!

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AI gateways: why and how

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Tags ai apis cloud microservices software-architecture

AI gateways extend traditional API gateway patterns to manage AI workloads, enabling secure, scalable, and efficient deployment of AI models in modern applications. By Nicolas Fränkel.

AI gateways extend the principles of traditional API gateways to the realm of artificial intelligence, offering a centralized control plane for managing AI model inference, routing, and security. Much like API gateways handle HTTP traffic, AI gateways abstract the complexity of interacting with AI models, allowing developers to focus on application logic rather than infrastructure.

Key takeaways:

  • AI gateways function similarly to API gateways, providing a centralized point for managing AI service requests and responses.
  • They enable features like request deduplication, authentication, and load balancing, which are crucial for optimizing AI workloads.
  • By decoupling clients from AI models, gateways improve system resilience and allow for easier updates and maintenance.
  • AI gateways can also help with monitoring, logging, and analytics, offering insights into AI model performance and usage patterns.
  • The article emphasizes that adopting AI gateways is not just about technology but also about rethinking system design for scalability and maintainability.

These gateways provide critical capabilities such as request deduplication, authentication, and load balancing—tailored for AI workloads. They also enable versioning of AI models, canary rollouts, and observability, which are essential for maintaining reliability in AI-driven systems. By decoupling AI models from the client, AI gateways improve maintainability and scalability, especially in cloud-native and microservices environments.

As AI becomes more integral to application development, AI gateways offer a structured way to manage the unique challenges of serving AI models at scale, making them a vital component of modern software architecture. Good read!

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PostHog vs Matomo: Choosing the right self-hosted analytics tool

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Tags analytics devops docker open-source miscellaneous

PostHog and Matomo serve distinct analytics purposes: PostHog excels in product analytics for SaaS applications, while Matomo is a robust web analytics platform. Both support self-hosting via Docker, but differ in resource usage and feature sets. By Alex Thornton.

PostHog and Matomo are both open-source analytics platforms, but they cater to different use cases. PostHog is designed for product analytics, offering features like session replays, feature flags, A/B testing, and funnel analysis—ideal for SaaS products needing deep user behavior insights. Matomo, on the other hand, is a mature web analytics tool that tracks pageviews, referrers, bounce rates, and goal conversions, making it a strong alternative to Google Analytics.

Quick comparison notes

  • PostHog: Product analytics, feature flags, A/B testing, session replays.
  • Matomo: Web analytics, GA replacement, GDPR compliance, plugin ecosystem.
  • PostHog requires 16GB+ RAM; Matomo runs on 2GB.
  • Matomo supports heatmaps/e-commerce via plugins; PostHog includes them natively.
  • PostHog’s hobby deployment limits event volume.
  • Matomo is better for low-resource environments.
  • Use both tools for web and product analytics.

Both platforms support Docker-based deployment, with Matomo running on two lightweight containers and PostHog leveraging ClickHouse for scalable event data storage. While Matomo is known for its stability since 2007, PostHog provides more modern product-centric tools. The choice depends on whether you’re analyzing website traffic or in-app user interactions. For developers prioritizing data privacy and self-hosting flexibility, both are strong contenders, but their strengths lie in different domains. Nice read!

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Why self-hosted analytics is the only safe way to attribute ai-assistant traffic

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Tags analytics open-source ai devops big-data

Matomo 5.8 introduces a dedicated AI-assistant tracking module that enables self-hosted analytics platforms to isolate genuine human demand from AI-generated noise. This update transforms self-hosted measurement from a privacy checkbox into a critical attribution control layer for SaaS founders and growth engineers navigating an era where chatbots and voice assistants generate significant referral traffic. By ImaLamer.

The release of Matomo 5.8 marks a significant shift in how we approach analytics in the age of AI assistants. With chatbots and voice assistants increasingly fetching pages on behalf of users, traditional analytics platforms struggle to distinguish between human-driven demand and AI-generated noise. Matomo’s new AI-assistant tracking module addresses this challenge by providing a dedicated solution for isolating genuine user interactions from automated traffic.

Some main points for this release:

  • AI assistants inflate referral traffic and skew funnels by performing server‑side fetches that appear as legitimate referrals.
  • Matomo 5.8’s on‑premises AI‑assistant module classifies bot traffic, isolates it in reports, and keeps data private.
  • Self‑hosting cuts event‑based overage costs, offers pipeline flexibility, and improves reliability versus adding another SaaS product.
  • Deployment is straightforward with Docker Compose; enabling the module requires a single config flag.
  • Real‑world case: 18 % drop in CAC and $220/month savings after isolating assistant traffic.
  • Trade‑offs: patching, feature parity lag, and data‑residency compliance need active management.
  • The shift signals that privacy‑first tools are evolving into strategic growth assets for AI‑heavy traffic.

This update transforms self-hosted analytics from a mere privacy consideration into a practical attribution control layer. For indie SaaS founders and growth engineers, owning the measurement stack becomes the simplest way to maintain accurate attribution without introducing additional hosted analytics products. The module specifically targets the problem of mixed referral signals, where AI assistants and crawlers create noise that obscures true user behavior.

By implementing this feature, organizations can now implement more sophisticated attribution models that account for the unique characteristics of AI-assisted interactions. This approach not only improves data accuracy but also maintains full control over sensitive user data, addressing both privacy concerns and measurement challenges simultaneously. Good read!

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Microsoft's new Azure Linux 4.0 is here, and it could replace Windows Server in the enterprise

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Tags linux cloud devops software-architecture azure

Microsoft’s Azure Linux 4.0 is now available for bare-metal and VM installations, marking a significant shift from cloud-only deployment. This move positions Azure Linux as a viable competitor to mainstream enterprise Linux distributions and potentially challenges Windows Server’s dominance in hybrid environments. The release underscores Microsoft’s commitment to open-source and multi-platform strategies, offering enterprises greater flexibility in their infrastructure choices. By Steven Vaughan-Nichols.

This distribution, designed primarily for Azure, now offers enterprises the option to deploy Linux outside the cloud, challenging traditional Linux distributions and potentially disrupting Windows Server’s entrenched position in hybrid environments. The availability of Azure Linux 4.0 reflects Microsoft’s broader strategy to embrace open-source technologies and provide flexible infrastructure solutions.

Some main facts about Azure Linux 4.0:

  • Azure Linux 4.0 is downloadable for on-premises and VMs, expanding beyond Azure-exclusive use.
  • Built on Fedora’s RPM ecosystem, optimized for Azure/Hyper-V with a Linux 6.18 kernel.
  • Dual support model: Azure Marketplace images include SLAs; ISO standalone use is community-supported.
  • Integrates with Azure services (Defender, confidential computing) for hybrid cloud consistency.
  • No GUI, designed for CLI-focused, cloud/server workloads.
  • GitHub project enables custom image builds but retains Microsoft’s curated control.
  • Potential to challenge enterprise Linux distros and replace Windows Server in the long term.
  • Still in beta, with limited standalone support and vendor-controlled development.

By enabling self-hosted deployments, Microsoft aims to attract enterprises seeking multi-cloud or hybrid setups, where Linux’s efficiency and cost-effectiveness are critical. This move not only strengthens Azure Linux’s credibility but also signals a potential shift in enterprise IT landscapes, where Linux may increasingly replace Windows Server in certain use cases. The release is a testament to Microsoft’s evolving stance on Linux, positioning it as a serious contender in the enterprise server market.

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The Arc Inversion: What nobody tells you before you deploy Azure Arc

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Tags azure database devops cloud software-architecture

Azure Arc promises streamlined management for on-premises SQL Server estates, but real-world adoption reveals unexpected complexities. This post explores the ‘Arc Inversion’ — where perceived technical hurdles are actually the easy parts, and the true challenges lie in organizational alignment, process transformation, and cultural shifts required for successful cloud integration. By Neil Bryan.

Managing legacy SQL Server 2012 installations often triggers painful conversations about end-of-support, licensing costs, and security risks. Azure Arc appears to be the silver bullet: unified cloud control plane, simplified licensing, and automated inventory management. Yet after extensive onboarding experiences, a recurring pattern emerges - what I call the ‘Arc Inversion.’

The technical challenges - integrating on-premises resources with Azure, configuring security policies, and establishing connectivity — are actually the straightforward parts. The real difficulties emerge in less visible areas: organizational resistance to new workflows, siloed teams struggling with shared responsibility models, and the cultural shift required when infrastructure management moves from isolated teams to cross-functional collaboration.

Successful Azure Arc adoption demands more than technical implementation. It requires rethinking how teams collaborate across traditional boundaries, establishing new governance frameworks, and preparing for the operational changes that come with unified management. The technology is ready; the challenge is ensuring your organization is equally prepared for the transformation it enables.

This article is a must-read for enterprises deploying Azure Arc, offering actionable insights into operational pitfalls that often go unmentioned in official documentation. It bridges the gap between Arc’s theoretical benefits and real-world implementation, emphasizing that success hinges on meticulous planning rather than technical complexity. Its value lies in preventing costly surprises, making it a critical resource for DBAs and architects managing legacy estates. Great read!

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ggsql: A grammar of graphics for SQL

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Tags data-science python sql big-data machine-learning

ggsql introduces a SQL-based grammar of graphics, enabling developers and data scientists to create rich visualizations directly within SQL queries. This tool integrates seamlessly with environments like Jupyter notebooks and VS Code, streamlining the data visualization workflow. By Thomas Lin Pedersen, Teun Van den Brand, George Stagg, Hadley Wickham.

ggsql is an innovative tool that brings the grammar of graphics to SQL, allowing users to describe visualizations directly within SQL queries. This approach simplifies the process of creating charts and graphs by leveraging the familiar SQL syntax. The tool is designed for use in environments such as Jupyter notebooks, VS Code, and Positron, making it accessible to a wide range of developers and data scientists.

ggsql supports a variety of visualization types, including scatterplots, line charts, and histograms. The tool uses the built-in penguins dataset for demonstration purposes, showcasing its ease of use. For instance, a simple scatterplot can be created using the following SQL query:

VISUALIZE bill_len AS x, bill_dep AS y
FROM ggsql:penguins

The primary motivation behind ggsql is to bridge the gap between data analysis and visualization. By enabling users to create visualizations within SQL, ggsql reduces the need for switching between different tools and languages. This integration streamlines the workflow, allowing for more efficient data exploration and presentation. Interesting read!

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Building a cross‑platform Ollama dashboard with 95% shared code

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Tags kotlin android web-development ai

This guide demonstrates how to build a production-ready admin dashboard for Ollama that runs on both Android and Desktop using Kotlin Multiplatform. By leveraging Compose Multiplatform, developers can achieve approximately 95% code sharing between platforms, significantly reducing development effort and maintenance overhead. By Vitali Tsikhanovich.

Building a cross-platform dashboard for Ollama using Kotlin Multiplatform offers significant advantages in code reuse and maintenance efficiency. This tutorial walks through creating a production-ready admin dashboard that runs on both Android and Desktop with approximately 95% shared code. The implementation leverages Compose Multiplatform to create a unified UI layer while maintaining platform-specific optimizations where necessary.

The architecture follows the Model-View-Intent (MVI) pattern, ensuring predictable state management and clear separation of concerns. Key features include model lifecycle management, registry discovery, VRAM monitoring, and streaming downloads—all integrated through Ollama’s REST API. The project setup requires Kotlin, coroutines, and basic Compose knowledge, along with a running Ollama instance. Developers will configure the Multiplatform environment, set up dependency management, and establish the shared module structure.

Implementation steps include defining shared data models, creating platform-specific adapters, and building the UI layer with Compose. The tutorial emphasizes best practices for state management, error handling, and network communication in a multiplatform context. By following this guide, developers can create a robust, cross-platform dashboard that provides comprehensive Ollama management capabilities across mobile and desktop environments, significantly reducing development time and maintenance overhead while maintaining high code quality and performance. Interesting read!

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