How we reduced CI time by 35% with Nx Caching
Blog post from Sentry
Sentry has significantly enhanced its build process efficiency by integrating Nx caching with Lerna 6 in its JavaScript SDK monorepo. This improvement came in response to the fast-paced nature of the company's development environment, where they processed 165 pull requests and modified over 800 files within a month, resulting in substantial time savings. By adopting Nx's task runner, Sentry achieved an 87.5% reduction in minimum build times and a 25% decrease in average build times, alongside a 35% reduction in CI runtime. The key to these improvements was the strategic caching of build tasks, leveraging Lerna's capabilities to avoid redundant operations. Sentry's approach included defining dependencies between scripts and employing named inputs to optimize cache invalidation, balancing between speed and reliability to ensure that changes are correctly detected without unnecessary cache misses. The integration not only focused on build tasks but also extended to linting and unit tests, showcasing the versatility and impact of the caching strategy on development workflows.
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