distributed-locks

Installation
SKILL.md

Distributed Locks

Coordinate exclusive access to resources across multiple service instances.

Overview

  • Preventing duplicate processing of jobs/events
  • Coordinating singleton processes (cron, leaders)
  • Protecting critical sections across instances
  • Implementing leader election
  • Rate limiting at distributed level

Lock Types Comparison

Lock Type Durability Latency Use Case
Redis (single) Low ~1ms Fast, non-critical
Redlock (multi) High ~5ms Critical, HA required
PostgreSQL advisory High ~2ms Already using PG, ACID
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Jan 21, 2026