Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mickeyyaya/refactoring-skills --skill batch-job-patternsgit clone --depth 1 https://github.com/mickeyyaya/refactoring-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mickeyyaya/refactoring-skills/batch-job-patterns)<a href="https://agentmods.dev/skills/mickeyyaya/refactoring-skills/batch-job-patterns"><img src="https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/batch-job-patterns/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mickeyyaya/refactoring-skills/batch-job-patterns"><img src="https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/batch-job-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00067 | $0.05454 |
| Opus 5 | $0.00034 | $0.02727 |
| Sonnet 5 | $0.00013 | $0.01091 |
| Haiku 4.5 | $0.00007 | $0.00545 |
Grade A, and why
batch-job-patterns scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 652 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Batch Job Patterns
Overview
Batch jobs fail in subtle ways: two instances start simultaneously and corrupt shared state, a crash at item 50,000 restarts the job from item 1, a dead worker holds a lock forever, or an unbounded batch runs out of memory. Use this guide when designing, implementing, or reviewing batch processing systems.
When to use: Designing scheduled jobs, ETL pipelines, bulk data migrations, report generation, queue-draining workers, or any process that operates on a bounded or streaming set of records.
Quick Reference
| Pattern | Core Idea | Primary Red Flag |
|---|---|---|
| Distributed Locking | Only one instance runs at a time via SETNX / advisory lock | Multiple instances starting the same job simultaneously |
| Idempotent Checkpoint/Resume | Track cursor position so a crash restarts mid-batch, not from scratch | Job restarts from item 1 on every failure |
| Heartbeat / Dead Job Detection | Worker renews a lease; expired lease means worker is dead | Lock held forever by a crashed worker |
| Job Scheduling | Cron, interval, event-triggered, or priority queue dispatch | Drift, missed runs, or runaway overlapping executions |
| Graceful Shutdown | SIGTERM drains in-flight items before exit | Partial item writes or corrupted state on deploy/restart |
| Retry and DLQ | Per-item retry with skip-or-fail policy; unprocessable items route to DLQ | Silent discard of failed items, or one bad item halts the entire batch |
| Batch Size Optimization | Memory-bounded chunks with throughput tuning | OOM crashes or 1-item-at-a-time throughput bottlenecks |
Patterns in Detail
1. Distributed Locking for Exclusive Job Execution
Without a distributed lock, two cron nodes or scaled replicas can start the same job simultaneously — leading to duplicate processing, race conditions, and data corruption.
Red Flags:
- No lock before starting a batch job in a multi-instance deployment
- Lock acquired with no expiry — dead worker holds it forever
- Lock released in a non-atomic way (check-then-delete can delete another owner's lock)
- Advisory lock never checked for success before proceeding
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 652 lines · 67 tokens per session scan A 823fde8b65be
batch-job-patterns is a skill published in the GitHub repository mickeyyaya/refactoring-skills (6 stars, last pushed 5mo ago), licensed MIT. It adds 67 tokens to every session and 5,454 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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