---
title: "Byzantine-Proof Distributed Resource Locker | Distributed Systems Architecture Canon"
description: "High-reliability distributed mutual exclusion architecture providing strictly increasing fencing tokens to prevent zombie workers from corrupting backend storage."
image: "https://tinycto.tv/assets/distributed-systems/distributed_systems_architectures_og.jpg"
canonicalUrl: "https://tinycto.tv/distributed-systems/architectures/distributed-fencing-lock-manager"
locale: "en"
---

# Byzantine-Proof Distributed Resource Locker (`arch-distributed-fencing-lock-manager`)

> **Architectural Pillar**: TRANSACTIONAL_SAGA | **Archetype**: CONSENSUS_STATE_REPLICATION
> **PACELC**: PC/EC | **Consensus Protocol**: Raft

High-reliability distributed mutual exclusion architecture providing strictly increasing fencing tokens to prevent zombie workers from corrupting backend storage.

### 3 Maturity Target Configurations

#### 1. Initial Target: 1,500 locks/sec

- **Guarantees**: Lease Expiration with Redis Redlock
- **Infrastructure Topology**: 5 independent Redis master instances across separate failure domains.
- **Operational Trade-Off**: Redlock lacks formal fencing tokens; vulnerable to clock drift anomalies.

#### 2. Scaled Target: 15,000 locks/sec

- **Guarantees**: Strict Raft Fencing Tokens (etcd v3)
- **Infrastructure Topology**: 5-node etcd cluster generating linearizable revisions. Target databases validate fencing tokens in `WHERE` clauses.
- **Operational Trade-Off**: Target databases must include fencing epoch columns in their schema.

#### 3. Ultra-Scale Target: 90,000 locks/sec

- **Guarantees**: Hardware-Enforced Consensus Fencing with Sub-Millisecond Leases
- **Infrastructure Topology**: Low-latency bare-metal consensus nodes communicating over RoCE / RDMA.
- **Operational Trade-Off**: Specialized enterprise networking and hardware requirements.

### Handled Failure Modes

- `DS-FAIL-17: Zombie Leader Fencing Bypass`
- `DS-FAIL-01: Split-Brain Partitioning`


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