Giving Hermes Read-Only Access to GCP, AWS, and Kubernetes
A practical setup giving an AI agent read-only access to debug QA and production on GCP, AWS, GKE, and EKS without touching workloads or secrets.
Writing
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Building an AI English Conversation Practice App
Notes on building an AI speaking practice app: STT, TTS, Gemini, ElevenLabs, latency, topic control, and useful feedback for oral English learners.
Cloud Run as a Gemini proxy for an unsupported region
How I used Google Cloud Run as a small AI gateway so clients in an unsupported region can still call Gemini through a supported GCP region.
Running Hermes on a Cloud Machine as a Daily Routine Assistant
How I wired Hermes Agent on a remote Linux box into Telegram, email, calendar, error monitoring, GitHub, and a daily morning briefing routine.
The callback that quietly doubled our database
A Rails after_save callback silently duplicated database rows: how the symptom appeared, why the obvious suspect was innocent, and the real root cause.
Zombie PostgreSQL replicas: the WAL segment removed deadlock
PostgreSQL replicas on Kubernetes can get stuck in a WAL segment removed loop that passes liveness checks, and three fixes stop it for good.
Why pg_dump backups on a PostgreSQL replica fail intermittently
Running pg_dump on a PostgreSQL replica can fail with conflict with recovery errors because the backup is a long read transaction colliding with WAL replay.
Postgres conflict with recovery: why replicas cancel queries
A PostgreSQL replica cancels long queries with conflict with recovery errors during VACUUM replication, and hot_standby_feedback fixes it without downtime.
Rails UJS to Turbo: the event timing bug CI didn't catch
Migrating Rails UJS to Turbo can silently break submit buttons and resets in production, because Turbo's event timing and Promise handling differ from UJS.
Production Ruby Debugging: A Progressive Escalation Guide
A progressive escalation guide to debugging Ruby applications in Kubernetes production without restarting: rbspy, kubectl debug, signals, rbtrace, and gdb.