HsienW
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distributed-step-lock
Design and review distributed locks for agent step transitions. Use when preventing concurrent workers, duplicate resumes, retries, compensation, or external requests from mutating the same task or step state at the same time.
Vue d’ensemble
Design and review distributed locks for agent step transitions. Use when preventing concurrent workers, duplicate resumes, retries, compensation, or external requests from mutating the same task or step state at the same time.
Lire la documentation complète
Documentation source, pas des instructions pour ce site. Vérifiez les permissions avant d’exécuter des commandes.
Distributed Step Lock
Skill Interface
- Name: distributed-step-lock.
- Description: Design and review distributed locks for agent step transitions when concurrent workers, duplicate resumes, retries, compensation, or external requests may mutate the same task or step state at the same time.
- Parameters: Step identifier, lock owner, TTL, transition guard, allowed state transition, lock store behavior, retry policy, failure behavior, event names, and concurrency verification cases.
- Instructions: Use this skill before changing shared task or step state from multiple runtimes. Acquire a lock, verify owner on release and extension, use compare-and-swap as a second guard, define TTL behavior, and test contention, expiry, owner mismatch, and lock store outage.
Idempotency prevents duplicate side effects for the same key. It does not by itself prevent two workers from racing on the same step transition. Use a lock plus a durable compare-and-swap guard.
Lock Interface
type StepLock = {
acquire(stepId: string, owner: string, ttlMs: number): Promise<boolean>;
release(stepId: string, owner: string): Promise<void>;
extend(stepId: string, owner: string, ttlMs: number): Promise<boolean>;
};
type StepTransitionGuard = {
transition(
stepId: string,
from: StepStatus,
to: StepStatus,
owner: string
): Promise<TransitionResult>;
};
Rules
- Acquire the lock before changing step state.
- Use owner identity when releasing or extending a lock.
- Use a TTL so crashed workers do not create permanent locks.
- Renew the lock for long-running steps.
- Reject release attempts from a different owner.
- Use a database compare-and-swap transition as a second line of defense.
- Emit structured events for lock acquired, contended, extended, released, and expired.
Failure Behavior
- Lock unavailable: return a retryable concurrency result or wait according to policy.
- Lock expired during work: stop mutation or revalidate ownership before committing.
- Durable transition mismatch: do not overwrite; reload state and decide the next action.
- Lock store unavailable: degrade according to safety policy, usually by rejecting mutation rather than allowing unsafe concurrency.
Verification
Test two concurrent workers, owner mismatch on release, TTL expiry after worker crash, lock extension, transition compare-and-swap failure, lock store outage, compensation racing with normal flow, and resume racing with retry.
Métadonnées du fichier
name: distributed-step-lock description: Design and review distributed locks for agent step transitions. Use when preventing concurrent workers, duplicate resumes, retries, compensation, or external requests from mutating the same task or step state at the same time.
Voir le texte original
---
name: distributed-step-lock
description: Design and review distributed locks for agent step transitions. Use when preventing concurrent workers, duplicate resumes, retries, compensation, or external requests from mutating the same task or step state at the same time.
---
# Distributed Step Lock
## Skill Interface
- Name: distributed-step-lock.
- Description: Design and review distributed locks for agent step transitions when concurrent workers, duplicate resumes, retries, compensation, or external requests may mutate the same task or step state at the same time.
- Parameters: Step identifier, lock owner, TTL, transition guard, allowed state transition, lock store behavior, retry policy, failure behavior, event names, and concurrency verification cases.
- Instructions: Use this skill before changing shared task or step state from multiple runtimes. Acquire a lock, verify owner on release and extension, use compare-and-swap as a second guard, define TTL behavior, and test contention, expiry, owner mismatch, and lock store outage.
Idempotency prevents duplicate side effects for the same key. It does not by
itself prevent two workers from racing on the same step transition. Use a lock
plus a durable compare-and-swap guard.
## Lock Interface
```ts
type StepLock = {
acquire(stepId: string, owner: string, ttlMs: number): Promise<boolean>;
release(stepId: string, owner: string): Promise<void>;
extend(stepId: string, owner: string, ttlMs: number): Promise<boolean>;
};
type StepTransitionGuard = {
transition(
stepId: string,
from: StepStatus,
to: StepStatus,
owner: string
): Promise<TransitionResult>;
};
```
## Rules
- Acquire the lock before changing step state.
- Use owner identity when releasing or extending a lock.
- Use a TTL so crashed workers do not create permanent locks.
- Renew the lock for long-running steps.
- Reject release attempts from a different owner.
- Use a database compare-and-swap transition as a second line of defense.
- Emit structured events for lock acquired, contended, extended, released, and
expired.
## Failure Behavior
- Lock unavailable: return a retryable concurrency result or wait according to
policy.
- Lock expired during work: stop mutation or revalidate ownership before
committing.
- Durable transition mismatch: do not overwrite; reload state and decide the
next action.
- Lock store unavailable: degrade according to safety policy, usually by
rejecting mutation rather than allowing unsafe concurrency.
## Verification
Test two concurrent workers, owner mismatch on release, TTL expiry after worker
crash, lock extension, transition compare-and-swap failure, lock store outage,
compensation racing with normal flow, and resume racing with retry.
Examiner la source
Prix et coûts d’utilisation
- Obtenir le skill
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- Licence
- MIT
- Prix non confirmé
- Le prix n’est pas confirmé. Les liens existants vers les sources et l’installation restent disponibles.
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Source du skill enregistrée
Un chemin vers les instructions est enregistré. Cela ne constitue pas un test, une garantie de sécurité ou de compatibilité.
Réviser avant installation: Éviter l’installation automatique
Licence: MIT
- Potential broker, wallet, exchange, or real-money execution surface; sandbox and explicit approval are required
- Low GitHub adoption signal
- L’approbation de revue IA est absente
- This skill may touch real-money trading, broker, wallet, or exchange operations; use only in a sandbox with explicit approval.
- Quality score needs review
- GitHub adoption: 23 GitHub stars
- Stars/forks activity: 23 stars, 0 forks; issue activity unavailable in current metadata
- Review status: AI review approval is missing
Les outils sont des indications de métadonnées, pas une compatibilité testée. Les prompts sont des suggestions.
Commencer par une petite tâche
- 1Lisez la source et confirmez entrées, résultats, dépendances et permissions.
- 2Demandez un plan à l’agent. Approuvez la configuration et les coûts avant un test isolé.
- 3Vérifiez résultats et fichiers modifiés. Signalez uniquement ce qui a été exécuté et conservez la révision source.
Vérifiez les dépendances, clés API et frais externes dans la source. Un dépôt public ne rend pas tous les services gratuits.
Source et conseils d’utilisation
RépertoriéContrôle statique
Métadonnées et examens sont indicatifs. Popularité, découverte et exécution réussie sont des faits distincts.
- Dépôt source
- HsienW/ai-agent-engineering-playbook
- Licence
- MIT
- Version
- Unknown
- Dernier push GitHub
- 20 sept. 2026
- Registre mis à jour
- 20 sept. 2026
- Chemin des instructions
- skills-runtime-governance/distributed-step-lock/SKILL.md @ 865be7c9dfbc
Version déclarée dans le registre ; vérifiez les versions de la source.
Qualité
55/100
Prometteur
Confiance
64/100
Sandbox uniquement
Audit
75/100
Risqué
- Potential broker, wallet, exchange, or real-money execution surface; sandbox and explicit approval are required
- Low GitHub adoption signal
- L’approbation de revue IA est absente
- This skill may touch real-money trading, broker, wallet, or exchange operations; use only in a sandbox with explicit approval.
- Quality score needs review
- GitHub adoption: 23 GitHub stars
- Stars/forks activity: 23 stars, 0 forks; issue activity unavailable in current metadata
- Review status: AI review approval is missing
- Verified installs
- —
- Résultats
- —
Copier ne signifie pas installer. Les compteurs nécessitent un rapport de réussite et ne garantissent pas la qualité globale.
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Plus de détails
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}Pour le créateur
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