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📰 Dev.to · Dane Wu

3 articles · Updated every 3 hours · View all reads

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Your SQL Is Fast but the API Is Slow: It's the Ruby Layer
Dev.to · Dane Wu 🔧 Backend Engineering ⚡ AI Lesson 1w ago
Your SQL Is Fast but the API Is Slow: It's the Ruby Layer
When the DB is fast but the API is still slow, the bottleneck is Ruby itself: bloated serialization, object allocation / GC pressure, and recomputation. Plus th
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A 1000x Speedup From One Index — and Why It Sometimes Does Nothing
Dev.to · Dane Wu ⚡ AI Lesson 1w ago
A 1000x Speedup From One Index — and Why It Sometimes Does Nothing
Rails Performance: Lessons from Production — #2 "Slow query? Add an index" is something everyone...
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Diagnosing a slow Rails page, layer by layer
Dev.to · Dane Wu 🔧 Backend Engineering ⚡ AI Lesson 2w ago
Diagnosing a slow Rails page, layer by layer
"This page feels slow" is a vague bug report. Before changing any code, it helps to have a fixed way...
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