This document discusses the slow speeds experienced when using Composer to install PHP dependencies from Japan due to latency to packagist.org. It proposes a solution of creating a Composer proxy in Japan called "composer-proxy.jp" to cache package information and speed up install times. Testing showed install times were 3x faster when using the proxy compared to direct access. Future work is discussed to add more caching and capabilities to the proxy.
Continuous integration is a development practice that requires developers to integrate code into a shared repository several times a day. This allows automated builds and tests to be run, which catches errors early. By integrating regularly, issues can be detected and addressed quickly, improving code quality and reducing risks associated with integration failures.