Panduan Teknis: Freelance Golang Programmer: Fault-Tolerant Distributed Job Schedulers. Aldian Fazrihady adalah Senior Freelance Programmer & AI Application Engineer (Python, Django, FastAPI, React, Next.js, TypeScript, Golang, RAG, MCP, Google ADK).
Replace single-point-of-failure Linux crontabs with horizontally scalable, leader-elected distributed schedulers in Go and PostgreSQL `SKIP LOCKED` with senior freelance programmer Aldian Fazrihady.
UPDATE scheduled_jobs
SET status = 'RUNNING', locked_by = $1, locked_until = clock_timestamp() + INTERVAL '5 minutes'
WHERE id = (
SELECT id FROM scheduled_jobs
WHERE status = 'PENDING' AND next_run_at <= clock_timestamp()
ORDER BY next_run_at ASC
FOR UPDATE SKIP LOCKED
LIMIT 1
)
RETURNING id, job_type, payload_json;