** Stop debating Alpine vs Ubuntu and start measuring: here's why your network calls are 20% faster on Alpine. **
If you've worked with Docker containers for any length of time, you've likely noticed that some operations perform differently across base images. One such observation that I noticed a few weeks back is the performance difference in curl requests between Alpine and Ubuntu Docker images.Many engineers have reported measurable performance improvements when using Alpine-based containers for network operations, with some seeing consistent 20 ms improvements over hundreds of curl calls. This isn't just anecdotal—there are concrete technical reasons why Alpine images can provide better network performance for certain workloads.In this article, we'll explore the technical factors behind these performance differences, provide testing methodologies to validate the claims, and help you make informed decisions about which base image to use for your containerized applications.
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