Your own 'Images as a Service'
summary
Pages average over 2MB and images dominate that growth, so a tiny service that resizes on demand can cut bytes dramatically: a Sinatra app using Dragonfly and ImageMagick on Heroku fetching originals from S3 and serving via CDN, written as 100 lines of code, produces responsive srcset/picture images and can save ~85% over naïve resizes. Benchmarks (ab -n1000 -c20) show transforms cost ~2–2.5× time but give much smaller transfers; very large originals (6MB) can overload simple instances, so aggressive CDN caching is required.
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chapters (7)
- 0:00Intro
- 1:13Images are service
- 3:29History Animation
- 5:17The Future
- 14:08Image Sizes
- 19:16Performance
- 26:11Alternatives
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