Best of Docker — November 2025

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    You Want Microservices—But Do You Need Them?

    Microservices have become the default architectural choice despite their significant complexity costs. Amazon Prime Video achieved 90% cost reduction by reverting to a monolith, while companies like Twilio Segment and Shopify found success with simpler architectures. Industry leaders including GitHub's former CTO and GraphQL's co-creator warn that most organizations lack the scale to justify microservices overhead. The operational costs, developer productivity drain, testing complexity, and data consistency challenges often outweigh benefits. Modular monoliths and service-oriented architectures offer comparable scalability without distributed system complexity. Docker provides deployment consistency across any architecture, not just microservices. The key question: does your actual scale and team structure justify the microservices premium, or are you choosing complexity over business needs?

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    Docker Engine v29 Release

    Docker Engine v29 introduces three major architectural changes: containerd image store becomes the default for new installations (replacing legacy graph drivers), migration to Go modules for better dependency management, and experimental nftables support to replace iptables. These changes improve maintainability, ecosystem alignment with Kubernetes and other containerd-based platforms, and future-proof the Docker platform. Existing installations are unaffected, but users can opt-in to the new features. The release focuses on infrastructure improvements rather than user-facing features.

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    Docker State of Application Development Survey 2025

    Docker launches its fourth annual State of Application Development survey, running from November 10 to December 10, 2025. The 20-minute survey aims to gather insights about developer workflows, tools, and priorities to guide Docker's product development. Participants can win prizes including a MacBook Pro, PlayStation 5, Amazon gift cards, and Docker swag, with the first 300 respondents receiving exclusive Docker socks.

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