Best of Serverless — December 2025

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    Article
    Avatar of goserverlessServerless·23w

    CI/CD for monorepos

    Serverless Framework Pro's CI/CD solution supports deploying multiple services from a single monorepo. Services should be organized in separate subdirectories off the root, with each service configured with the same app and org settings. After initial deployment via CLI, connect your GitHub or BitBucket repository and configure branch-to-stage mappings for automated deployments. Advanced features include selective deployments (only redeploy when specific service code changes) and dependency-based deployments (redeploy when dependent services or shared code folders are modified). This approach provides flexibility to deploy only what's needed based on code changes.

  2. 2
    Article
    Avatar of vercelVercel·24w

    Rust runtime now in public beta for Vercel Functions

    Vercel has launched public beta support for Rust runtime in Vercel Functions, powered by Fluid compute. The native runtime includes HTTP response streaming, Active CPU pricing, increased environment variable limits (64KB vs 6KB), and automatic integration with Vercel's logging and monitoring systems. Developers can get started using Cargo.toml configuration and the vercel_runtime crate, with starter templates available for basic and Axum-based deployments.

  3. 3
    Article
    Avatar of cloudflareCloudflare·24w

    Python Workers redux: fast cold starts, packages, and a uv-first workflow

    Cloudflare Python Workers now support any Pyodide-compatible package with significantly faster cold starts than competitors. Using memory snapshots and WebAssembly architecture, Workers achieve 2.4x faster cold starts than AWS Lambda and 3x faster than Google Cloud Run when loading common packages. The platform integrates with uv for package management through pywrangler tooling, enabling easy deployment of Python applications globally. Technical innovations include memory snapshot restoration, careful entropy handling for randomness, and function pointer table management to eliminate Python initialization overhead during cold starts.

  4. 4
    Article
    Avatar of freecodecampfreeCodeCamp·22w

    How to Run a Docker Container in AWS Lambda

    Learn to deploy a Docker container using AWS Lambda by building a Python application image, pushing it to Amazon ECR, and creating a Lambda function from that image. The tutorial covers building and testing a Docker image locally, authenticating with ECR, tagging and pushing the image, and deploying it as a serverless Lambda function with step-by-step CLI commands.

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