---
title: "Tunable Consistency Wide-Column Engine | Distributed Systems Architecture Canon"
description: "Dynamo prensipleri, ayarlanabilir okuma/yazma tutarlılık seviyeleri ve arka plan okuma onarımı (read repair) uygulayan geniş-sütunlu dağıtık depolama."
image: "https://tinycto.tv/assets/distributed-systems/distributed_systems_architectures_og.jpg"
canonicalUrl: "https://tinycto.tv/tr/distributed-systems/architectures/wide-column-tunable-quorum"
locale: "tr"
---

# Tunable Consistency Wide-Column Engine (`arch-wide-column-tunable-quorum`)

> **Mimari Sütun**: STORAGE_PARTITIONING | **Arketip**: CRDT_ACTIVE_ACTIVE
> **PACELC**: PA/EL | **Uzlaşma Protokolü**: Quorum

Dynamo prensipleri, ayarlanabilir okuma/yazma tutarlılık seviyeleri ve arka plan okuma onarımı (read repair) uygulayan geniş-sütunlu dağıtık depolama.

### 3 Olgunluk Seviyesi Yapılandırması

#### 1. Initial Target: 15,000 writes/sec

- **Garantiler**: LOCAL_ONE Consistency
- **Altyapı Topolojisi**: 3 nodes in a single datacenter.
- **Operasyonel Ödünleşim**: Eventual consistency can return stale data if nodes fail before read repair.

#### 2. Scaled Target: 180,000 writes/sec

- **Garantiler**: LOCAL_QUORUM Strong Consistency ($R=2, W=2, N=3$)
- **Altyapı Topolojisi**: 6 bare-metal nodes running C++ ScyllaDB with NVMe disks and automated background repair.
- **Operasyonel Ödünleşim**: Requires strict disk capacity headroom (50%) for SSTable compaction.

#### 3. Ultra-Scale Target: 1,500,000 writes/sec

- **Garantiler**: Multi-Datacenter Strong Consistency with Zero-Copy Direct I/O
- **Altyapı Topolojisi**: 3 datacenters (US, EU, APAC) with 12 bare-metal nodes each, synchronized via tunable quorums.
- **Operasyonel Ödünleşim**: Requires dedicated database reliability engineering team to manage compaction and repair cycles.

### Ele Alınan Hata Modları

- `DS-FAIL-07: Clock Skew Ordering`
- `DS-FAIL-20: Gossip Protocol Convergence Lag`


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