How Startups Can Build a Full Observability Stack for Under $200 a Month

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A software engineer argues that early-stage startups with small teams are overspending on monitoring tools like Datadog, which can cost over $5,000 per month for eight engineers. The proposed alternative stack uses open-source, self-hosted tools — including Prometheus, Grafana, Loki, Jaeger, and OpenTelemetry — to cover the majority of observability needs at roughly $150 per month. The approach covers metrics, logs, distributed tracing, alerting, and uptime monitoring without requiring enterprise-grade pricing. The article also outlines a phased adoption model, recommending teams graduate to more expensive managed services only as headcount and complexity grow. It cautions against building custom monitoring platforms, citing cases where startups wasted months of engineering time before ultimately purchasing commercial solutions anyway.

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Developer Tests OpenCV SFace Model for Face Recognition via Nearest Neighbor Search

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

Developer's 'Deploy to Cloudflare' button shipped auth bypass to all users by default

A developer discovered that his open-source invoicing app Minvoice was deploying with admin authentication fully disabled for all users who used its one-click Cloudflare deploy button. The root cause was the app's .dev.vars.example file, which contained a DEV_BYPASS_ACCESS=true flag meant only for local development to skip repetitive login prompts. Cloudflare's deploy button reads that file and pre-fills its values as suggested defaults, meaning most users accepted them without changes, inadvertently pushing the auth bypass flag into production. Beyond the security flaw, the same mechanism also deployed a localhost URL into payment links and placeholder API keys, causing payment buttons to silently fail. The developer has since restructured the example file so only a required admin password field is active, with all other entries commented out to prevent template values from becoming live production configuration.

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