When Your Cache Has a Bigger Carbon Footprint Than Your Users

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Caching in Rails is like duct tape. Sometimes it saves the day. Sometimes it just makes a sticky mess you’ll regret later. Nowhere is this more true than in data-heavy apps… like a custom CRM analytics tool that glues together a few systems. You know the type: dashboards full of metrics, funnel charts, KPIs, and reports that customers swear they need “real-time.” And that’s where the caching…

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