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dual write

13 articles · Page 1 of 1
Architectural Methodology
Architectural Methodology
Jun 29, 2026 · Backend Development

How to Share Data and Ensure Consistency Between Old and New Systems During Parallel Migration

The article examines the challenges of legacy system migration using the strangler pattern, outlining how to keep old and new systems running in parallel while synchronizing data through API integration, dual‑write strategies, gateway routing, and anti‑corruption layers to maintain consistency.

API GatewayAnti-Corruption LayerData Consistency
0 likes · 5 min read
How to Share Data and Ensure Consistency Between Old and New Systems During Parallel Migration
JD Tech Talk
JD Tech Talk
Jul 25, 2025 · Databases

How to Seamlessly Migrate a Legacy MongoDB System to JimKV, MySQL, and ES

This article presents a comprehensive migration plan for a legacy MongoDB‑based system, detailing scope analysis, dual‑write implementation, data source selection, bulk and incremental migration strategies, and a three‑pronged online approach (monitoring, gray release, rollback) to ensure a smooth cut‑over without service disruption.

Data synchronizationDatabase MigrationJImKV
0 likes · 8 min read
How to Seamlessly Migrate a Legacy MongoDB System to JimKV, MySQL, and ES
Zhuanzhuan Tech
Zhuanzhuan Tech
Jul 17, 2024 · Databases

Data Migration Strategies: Dual‑Write and Gray‑Scale Switch Approaches

This article presents two practical database migration schemes—dual‑write and a gray‑scale switch—detailing their workflows, code refactoring, data synchronization using Syncer, consistency verification with sync‑diff‑inspector, and operational trade‑offs for minimizing downtime and ensuring data integrity.

Database MigrationGray SwitchMySQL
0 likes · 13 min read
Data Migration Strategies: Dual‑Write and Gray‑Scale Switch Approaches
dbaplus Community
dbaplus Community
Apr 19, 2023 · Databases

How to Migrate Large Tables and Sync Data Seamlessly in Production

This article explains common business scenarios such as large‑table splitting, cross‑database migration, and data synchronization, then compares loss‑bearing and loss‑less migration strategies, and provides detailed step‑by‑step implementation guidance for smooth dual‑write migration and real‑world tooling.

Data MigrationDatabasesSharding
0 likes · 17 min read
How to Migrate Large Tables and Sync Data Seamlessly in Production
IT Architects Alliance
IT Architects Alliance
Apr 14, 2023 · Databases

Comprehensive Guide to Database Horizontal Scaling, Smooth 2N Expansion, and Keepalived High‑Availability Configuration

This technical guide explains how to scale a sharded database horizontally by introducing five expansion schemes—including shutdown, write‑stop, log‑based, dual‑write, and smooth 2N approaches—covers MariaDB installation, master‑master replication setup, dynamic data‑source configuration with ShardingJDBC, and detailed Keepalived high‑availability configuration for seamless service continuity.

Database ScalingDynamic Data SourceHigh Availability
0 likes · 31 min read
Comprehensive Guide to Database Horizontal Scaling, Smooth 2N Expansion, and Keepalived High‑Availability Configuration
dbaplus Community
dbaplus Community
Mar 22, 2023 · Databases

Scaling an Airline Ticket Order Database: From Monolith to 64‑Shard Sharding

The article details how a rapidly growing airline ticket order system was re‑architected by identifying performance bottlenecks, applying vertical and horizontal sharding, optimizing cache layers, implementing dual‑write mechanisms, and planning a phased migration to achieve ten‑fold QPS growth while reducing resource usage and operational risk.

Cache OptimizationMySQLdatabase sharding
0 likes · 38 min read
Scaling an Airline Ticket Order Database: From Monolith to 64‑Shard Sharding
ITPUB
ITPUB
Mar 11, 2023 · Databases

How to Keep MongoDB and Relational DB Dual Writes Consistent

This article explains why dual‑write consistency between MongoDB and a relational database is challenging, compares common misconceptions with cache usage, and provides practical patterns—including write ordering, retry mechanisms, and scheduled cleanup—to reliably synchronize core and non‑core data.

Data ConsistencyDatabaseJob Scheduling
0 likes · 12 min read
How to Keep MongoDB and Relational DB Dual Writes Consistent
Su San Talks Tech
Su San Talks Tech
Dec 5, 2022 · Databases

How to Keep MongoDB and Relational DB Writes Consistent

This article explores common misconceptions and practical strategies—including write ordering, delayed double‑delete, retry mechanisms, and scheduled cleanup jobs—to ensure reliable dual‑write consistency between MongoDB and traditional relational databases.

Data ConsistencyDatabase SynchronizationMongoDB
0 likes · 10 min read
How to Keep MongoDB and Relational DB Writes Consistent
Ctrip Technology
Ctrip Technology
Jun 9, 2022 · Databases

Ctrip Order Database Architecture Optimization and Sharding Case Study

This article details Ctrip's comprehensive redesign of its airline ticket order database, covering the background performance bottlenecks, vertical and hot‑cold data splitting, sharding key selection, multi‑level caching, cross‑shard query optimization, dual‑write mechanisms, fault‑tolerance strategies, project planning, and the resulting improvements in scalability and cost.

Fault Tolerancedatabase shardingdual write
0 likes · 37 min read
Ctrip Order Database Architecture Optimization and Sharding Case Study
Architect's Tech Stack
Architect's Tech Stack
Sep 13, 2020 · Big Data

Evolution and Optimization of JD Daojia Order Center Elasticsearch Cluster

This article details how JD Daojia's order center migrated from a simple MySQL‑backed system to a high‑throughput Elasticsearch cluster, describing each architectural phase, performance tuning measures, dual‑cluster real‑time backup, version upgrades, data synchronization strategies, and the key pitfalls encountered such as deep pagination and FieldData memory issues.

Cluster ArchitectureData synchronizationDocValues
0 likes · 11 min read
Evolution and Optimization of JD Daojia Order Center Elasticsearch Cluster
Xianyu Technology
Xianyu Technology
Jun 9, 2020 · Backend Development

Xianyu Coin Service Migration: A Service‑Based Data Migration Approach

Alibaba migrated Xianyu Coin’s points from the legacy KingTower platform to the new Banliang service using a four‑phase, service‑based approach—preparation, active/passive data migration with distributed locks, dual‑write for consistency, reconciliation, and a gradual service switch—completing the transition in a month without user impact.

Data MigrationReconciliationRedis Lock
0 likes · 11 min read
Xianyu Coin Service Migration: A Service‑Based Data Migration Approach