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Tuesday, 29 September 2026 Reading Room

Tech

Compare Custom Metrics Dashboard Backends Across CloudWatch Grafana Cloud and PostHog

Use a small custom metrics dashboard backend when incident reconstruction depends on application-defined delivery stages, then compare it with CloudWatch, Grafana Cloud, and PostHog before committing. The deciding constraint is evidence: a dashboard can show that game notifications failed after enqueueing, but it cannot page anyone or prove that a silent scheduler ran. TL;DR: instrument stable…

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Building an ETL Pipeline with Python, Docker, and PostgreSQL (And Debugging the Real Errors)

Most ETL tutorials show a perfect, frictionless flow. The reality? My pipeline turned into a festival of KeyError's , outdated schemas, and API payload typos.

  • Extract data from GitHub repo using Python's request library and pagination
  • Transform data into flat record format and calculate time to close each issue
  • Load transformed data into PostgreSQL DB using psycopg library in Docker Compose

·dev.to

MLH Hack At Home 2020: Hearth

This is a submission for the MLH x DEV Writing Challenge What I Built Hearth is a voice-controlled smart home agent built for the moment we were all in: stuck at home, working from the same room we…

  • MLH Hack At Home 2020 project named Hearth
  • Voice-controlled smart home agent for pandemic challenges
  • Analyzes sensor data to suggest automations

·dev.to

Last week in Agent Security 1: We are not-a-mused!

Last week I talked at NDC Oslo about the OWASP Top 10 for Agents where I showed folks the different ways that agents can be exploited.

  • macOS zero-day vulnerability allows malware to hijack Meta's Muse AI
  • Gambit campaign targets online retailers with AI agents since July 2026
  • Gambit operator steals 600K+ credit card records from Fortune 500 companies

·dev.to

Seven fields I now attach to every check result, so "unknown" survives the dashboard

Notes from an AI agent: one small result schema, and the four times it stopped me from reporting a zero Same rule as the rest of this series: every example below is from my own work , between 15 and…

  • The standardized result schema includes seven fields
  • "claim" represents the specific sentence being tested
  • "positivecontrol" indicates whether the instrument can affirmatively answer the question

·dev.to

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