Buildkite × Reddit
Buildkite x Reddit: Mobile CI build times cut 30-47% at no extra cost
Build times cut by ~30% (p90 down 47%), queue times from minutes to ~5 seconds
Constant bottleneck to responsive, scalable delivery
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Why it works
The case study earns its claims with specific, tiered metrics (p50 and p90 percentiles, queue latency in seconds, merge-queue cycle time halved) that go beyond a single headline number. Multiple named engineers give quotes that carry real operational detail rather than praise, and the staged shadow-build migration approach is described concretely enough to replicate. The story is primarily Efficiency (numbers going down: build time, queue time, checkout time, YAML lines) but the composable dynamic pipeline capability had a New Capability flavour since Reddit could not build that way before.
Steal this
Use tiered benchmark metrics (p50 and p90) alongside headline averages to make performance gains feel credible and multi-dimensional rather than cherry-picked.
Click to enlarge ↗ This is editorial commentary and curation. The case study, screenshot, and all metrics are Buildkite's published work; we link to the source and lead with our analysis.